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Current as of Saturday, April 4, 2009 00:27:23

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Program  |  Deadlines  |  Abstract submission |  Registration/Housing/Etc.  |  Special Event or Lecture  |  Inquiries:  meet@ams.org

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2009 Spring Central Sectional Meeting
Urbana, IL, March 27-29, 2009 (Friday - Sunday)
Meeting #1047

Associate secretaries:
Susan J Friedlander, AMS susan@math.northwestern.edu

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Friday March 27, 2009

• Friday March 27, 2009, 12:00 p.m.-4:00 p.m.
  Meeting Registration
  Room 314, Altgeld Hall
• Friday March 27, 2009, 12:00 p.m.-4:00 p.m.
  Exhibit and Book Sale
  Math Library (2nd Floor), Altgeld Hall
• Friday March 27, 2009, 2:00 p.m.-4:50 p.m.
  Special Session on Complex Dynamics and Value Distribution, I
  Room 441, Altgeld Hall
  Organizers:
  Aimo Hinkkanen, University of Illinois at Urbana-Champaign aimo@uiuc.edu
  Joseph B. Miles, University of Illinois at Urbana-Champaign joe@math.uiuc.edu
  

  • 2:00 p.m.
    Monotonicity and comparison results for conformal invariants.
    Albert Baernstein II*, Washington University
    A. Yu Solynin, Texas Tech University
    (1047-35-152)
  • 2:30 p.m.
    Maimquist-type theorems for Painleve equations.
    Edmund Y. M. Chiang*, Hong Kong University of Science and Technology
    R. G. Halburd, Loughborough University
    E. F. Lingham, Loughborough University
    (1047-30-497)
  • 3:00 p.m.
    A reverse Denjoy theorem.
    P C Fenton, Department of Mathematics and Statistics, University of Otago
    John F Rossi*, Department of Mathematics, Virginia Tech
    (1047-30-22)
  • 3:30 p.m.
    Unbounded Bilipschitz Homogeneous Jordan Curves.
    David M Freeman*, University of Cincinnati
    (1047-30-406)
  • 4:00 p.m.
    On the differential independence of the Riemann Zeta Function and the Euler Gamma Function.
    Zhuan J Ye*, Dept of Math. Northern Illinois Univ
    (1047-30-241)
  • 4:30 p.m.
    The hyperbolic metric and real affine mappings.
    David Minda*, University of Cincinnati
    (1047-30-460)
• Friday March 27, 2009, 2:00 p.m.-5:20 p.m.
  Special Session on Local and Homological Methods in Commutative Algebra, I
  Room 165, Noyes Lab
  Organizers:
  Florian Enescu, Georgia State University fenescu@gsu.edu
  Sandra Spiroff, University of Mississippi spiroff@olemiss.edu
  

  • 2:00 p.m.
    Semidualizing modules and Bass numbers.
    Sean Sather-Wagstaff*, North Dakota State University
    (1047-13-265)
  • 2:30 p.m.
    Examples of Some Henselian Rings.
    Dana T Weston*, University of Missouri - Columbia
    (1047-13-329)
  • 3:00 p.m.
    Dualizing modules and Gorenstein presentations.
    David Jorgensen, University of Texas-Arlington
    Graham J Leuschke*, Syracuse University
    Sean Sather-Wagstaff, North Dakota State University
    (1047-13-315)
  • 3:30 p.m.
    Coherent Gorenstein Rings.
    Livia M Hummel*, University of Indianapolis
    (1047-13-259)
  • 4:00 p.m.
    Generators of the defining ideals of monomial curves.
    Hema Srinivasan*, University of Missouri
    (1047-13-385)
  • 4:30 p.m.
    Koszul modules over short Gorenstein local rings.
    Inês Bonacho dos Anjos Henriques*, Department of Mathematics, University of Nebraska-Lincoln
    Liana M. Şega, Department of Mathematics and Statistics, University of Missouri
    (1047-13-399)
  • 5:00 p.m.
    Contracting endomorphisms and Gorenstein modules.
    Hamid Rahmati*, University of Nebraska-Lincoln
    (1047-13-383)
• Friday March 27, 2009, 2:00 p.m.-4:50 p.m.
  Special Session on Number Theory in the Spirit of Erdos, I
  Room 143, Altgeld Hall
  Organizers:
  Kevin Ford, University of Illinois at Urbana-Champaign ford@math.uiuc.edu
  A. J. Hildebrand, University of Illinois at Urbana-Champaign hildebr@math.uiuc.edu
  

  • 2:00 p.m.
    A 1935 Erdős paper on prime numbers and Euler's function.
    Carl Pomerance*, Dartmouth College
    (1047-11-157)
  • 3:00 p.m.
    Phase transitions in infinitely generated groups, and a problem in additive number theory.
    Melvyn B. Nathanson*, CUNY (Lehman College and the Graduate Center)
    (1047-11-12)
  • 3:30 p.m.
    Dense Egyptian fractions.
    Greg Martin*, University of British Columbia
    (1047-11-11)
  • 4:00 p.m.
    On Carmichael and Giuga numbers.
    William D Banks*, University of Missouri
    (1047-11-356)
  • 4:30 p.m.
    Some problems concerning the fraction $\sigma(n)/n$.
    Paul Pollack*, University of Illinois at Urbana-Champaign
    (1047-11-454)
• Friday March 27, 2009, 2:00 p.m.-5:20 p.m.
  Special Session on Time, Scale and Frequency Methods in Harmonic Analysis, I
  Room 141, Altgeld Hall
  Organizers:
  Richard S. Laugesen, University of Illinois at Urbana-Champaign Laugesen@illinois.edu
  Darrin M. Speegle, St. Louis University speegled@slu.edu
  

  • 2:00 p.m.
    On some maximal multipliers in $L^p$.
    Ciprian Demeter*, Indiana University, Bloomington
    (1047-42-417)
  • 2:30 p.m.
    On curvature and the bilinear multiplier problem.
    S. Zubin Gautam*, University of California, Los Angeles
    (1047-42-426)
  • 3:00 p.m.
    Some operators related to multilinear oscillatory integrals.
    Xiaochun Li*, University of Illinois at Urbana-Champaign
    (1047-42-496)
  • 3:30 p.m.
    Time-frequency localization and sampling of multiband signals.
    Joseph D Lakey*, New Mexico State University
    (1047-42-34)
  • 4:00 p.m.
    Gabor frames and directional time--frequency analysis.
    Loukas Grafakos*, University of Missouri
    Christopher Sansing, Department of Defense
    (1047-42-199)
  • 4:30 p.m.
    Spline Wavelets, Finite Element Wavelets, and Wavelets with Composite Dilation.
    Tian-Xiao He*, Illinois Wesleyan University
    (1047-42-214)
  • 5:00 p.m.
    Sparsity Equivalence of Anisotropic Decompositions.
    David L. Donoho, Stanford University
    Gitta Kutyniok*, University of Osnabrueck
    (1047-42-319)
• Friday March 27, 2009, 2:00 p.m.-5:20 p.m.
  Special Session on Hyperbolic Geometry and Teichmuller Theory, I
  Room 443, Altgeld Hall
  Organizers:
  Jason Deblois, University of Illinois at Chicago jdelbois@math.uic.edu
  Richard P. Kent, IV, Brown University rpkfour@gmail.com
  Christopher J. Leininger, University of Illinois at Urbana-Champaign clein@math.uiuc.edu
  

  • 2:00 p.m.
    Title: The Casson invariant and the word metric on the Torelli group.
    Nathan Broaddus*, University of Chicago
    Benson Farb, University of Chicago
    Andrew Putman, MIT
    (1047-57-185)
  • 2:30 p.m.
    The determinant of the Laplacian, Lyapunov exponents and volumes of strata of quadratic differentials.
    Alex Eskin*, University of Chicago
    (1047-37-293)
  • 3:00 p.m.
    Controlling covers of arithmetic orbifolds.
    D B McReynolds*, University of Chicago
    (1047-51-107)
  • 3:30 p.m.
    Discussion
  • 4:00 p.m.
    Four-free groups and hyperbolic geometry.
    Marc Culler*, University of Illinois at Chicago
    Peter B. Shalen, University of Illinois at Chicago
    (1047-57-316)
  • 4:30 p.m.
    A combinatorial property of isometric Z-actions and geodesic flow.
    Ian Biringer*, University of Chicago
    (1047-51-149)
  • 5:00 p.m.
    Epstein surfaces, trees, and bubbles.
    David Dumas*, University of Illinois at Chicago
    (1047-53-182)
• Friday March 27, 2009, 2:00 p.m.-5:20 p.m.
  Special Session on Topological Dynamics and Ergodic Theory, I
  Room 345, Altgeld Hall
  Organizers:
  Alica Miller, University of Louisville amiller@erdos.math.louisville.edu
  Joseph Rosenblatt, University of Illinois at Urbana-Champaign rosnbltt@math.uiuc.edu
  

  • 2:00 p.m.
    Rudolph's Thesis.
    Matthew Foreman*, UC Irvine
    (1047-37-452)
  • 3:00 p.m.
    A concentration function estimate and intersective sets from matrices.
    Paul Balister, Memphis
    Randall McCutcheon*, Memphis
    (1047-37-289)
  • 3:30 p.m.
    About positive and zero exponents of $SL(2,R)$ valued cocycles over irrational rotation flows, in the smooth category.
    Mahesh G Nerurkar*, Rutgers University, New Jersey, 08102.
    (1047-37-165)
  • 4:00 p.m.
    The set of sequence entropies for a given space.
    Xiangdong Ye*, university of science and technology of china
    (1047-37-110)
  • 4:30 p.m.
    On the Pointwise Ergodic Theorem along squares.
    Ciprian Demeter*, Indiana University, Bloomington
    (1047-37-416)
  • 5:00 p.m.
    Multiple ergodic theorems for Hardy field sequences.
    Nikos Frantzikinakis*, University of Memphis
    (1047-37-440)
• Friday March 27, 2009, 2:00 p.m.-5:20 p.m.
  Special Session on q-Series and Partitions, I
  Room 147, Altgeld Hall
  Organizers:
  Bruce Berndt, University of Illinois at Urbana-Champaign berndt@math.uiuc.edu
  Ae Ja Yee, Pennsylvania State University yee@math.psu.edu
  

  • 2:00 p.m.
    A partial theta identity of Ramanujan and its number theoretic interpretation.
    Krishnaswami Alladi*, University of Florida
    (1047-11-131)
  • 2:30 p.m.
    The GBG-Rank , 4-cores and 3-cores.
    Alexander Berkovich*, Mathematics Department, University of Florida
    (1047-05-328)
  • 3:00 p.m.
    Rank and crank partition congruences.
    Frank G Garvan*, University of Florida
    (1047-11-371)
  • 3:30 p.m.
    Ranks for a Function Related to Overpartitions.
    Song Heng Chan*, Nanyang Technological University
    Ae Ja Yee, Penn State University
    (1047-11-422)
  • 4:00 p.m.
    A Proof of Sellers' Conjecture.
    Peter Paule*, Research Institute for Symbolic Computation (RISC)
    (1047-11-370)
  • 4:30 p.m.
    Number theoretic properties of generating functions related to Dyson's rank for partitions into distinct parts.
    Maria J Monks*, Massachusetts Institute of Technology
    (1047-11-99)
  • 5:00 p.m.
    On the subpartitions of the ordinary partitions.
    Byungchan Kim*, University of Illinois, Urbana-Champaign
    (1047-11-89)
• Friday March 27, 2009, 2:00 p.m.-4:50 p.m.
  Special Session on Concrete Aspects of Real Positive Polynomials, I
  Room 162, Noyes Lab
  Organizers:
  Victoria Powers, Emory University vicki@mathcs.emory.edu
  Bruce Reznick, University of Illinois at Urbana-Champaign reznick@illinois.edu
  

  • 2:00 p.m.
    Optimizing Polynomials via Low Dimensional Restrictions.
    Grigoriy Blekherman*, Brooklyn, NY
    (1047-26-298)
  • 2:30 p.m.
    A convex polynomial that is not SOS-convex.
    Amir Ali Ahmadi, Massachusetts Institute of Technology
    Pablo A. Parrilo*, Massachusetts Institute of Technology
    (1047-12-415)
  • 3:00 p.m.
    Rational sums of squares and applications.
    Christopher Jacques Hillar*, MSRI
    (1047-13-424)
  • 3:30 p.m.
    Diagonal minus tail forms and Lasserre's sufficient conditions for sums of squares.
    Carla Fidalgo*, Departamento de Física e Matemática, Instituto Superior de Engenharia de Coimbra
    Alexander Kovacec, Departamento de Matemática, Universidade de Coimbra
    (1047-14-246)
  • 4:00 p.m.
    Noncoercive sums of squares in $\mathbb{R} [x_1, ... ,x_n]$.
    Gregory C Verchota*, Syracuse University
    (1047-12-65)
  • 4:30 p.m.
    On Hilbert's theorem for psd ternary sextics.
    Bruce Reznick*, University of Illinois at Urbana-Champaign
    (1047-14-390)
• Friday March 27, 2009, 2:00 p.m.-5:20 p.m.
  Special Session on The Logic and Combinatorics of Algebraic Structures, I
  Room 203, Noyes Lab
  Organizers:
  John Snow, Concordia University john.snow@cune.edu
  Jeremy Alm, Illinois College alm.academic@gmail.com
  

  • 2:00 p.m.
    Relation algebras from group actions.
    Jeremy F Alm*, Illinois College
    (1047-03-170)
  • 2:30 p.m.
    Birelativized relation algebras.
    Richard L Kramer*, Iowa State University
    (1047-03-121)
  • 3:00 p.m.
    Chromatic Graphs, Ramsey Numbers, and the Flexible Atom Conjecture.
    Jeremy F. Alm, Illinois College
    Roger D. Maddux, Iowa State University
    Jacob Manske*, Iowa State University
    (1047-05-71)
  • 3:30 p.m.
    Relational relevance algebras.
    Roger D Maddux*, Iowa State University
    (1047-03-100)
  • 4:30 p.m.
    Clones with finitely many relative $\mathcal R$-classes.
    Agnes E. Szendrei*, University of Colorado
    Erkko Lehtonen, University of Luxembourg
    (1047-08-173)
  • 5:00 p.m.
    Moufang sets of finite Morley rank.
    Josh Wiscons*, University of Colorado at Boulder
    (1047-20-148)
• Friday March 27, 2009, 2:00 p.m.-4:20 p.m.
  Special Session on Geometric Group Theory
  Room 445, Altgeld Hall
  Organizers:
  Sergei V. Ivanov, University of Illinois at Urbana-Champaign ivanov@math.uiuc.edu
  Ilya Kapovich, University of Illinois at Urbana-Champaign kapovich@math.uiuc.edu
  Igor Mineyev, University of Illinois at Urbana-Champaign mineyev@math.uiuc.edu
  Paul E. Schupp, University of Illinois at Urbana-Champaign schupp@math.uiuc.edu
  

  • 2:00 p.m.
    Classifying surface bundles.
    Daniel P. Groves*, University of Illinois at Chicago
    (1047-20-195)
  • 2:30 p.m.
    Sofic groups and profinite topology on free groups.
    Lev Glebsky*, UASLP, Mexico. UIUC visiting.
    L.M. Rivera, University of Zacatecaz, Mexico
    (1047-20-369)
  • 3:00 p.m.
    Dehn functions of solvable groups.
    Kevin Wortman*, University of Utah
    (1047-20-335)
  • 3:30 p.m.
    Search problems in group theory.
    Vladimir Shpilrain*, The City College of New York
    (1047-20-324)
  • 4:00 p.m.
    Packing subgroups and relative hyperbolicity.
    G Christopher Hruska*, University of Wisconsin--Milwaukee
    Daniel T Wise, McGill University
    (1047-20-468)
• Friday March 27, 2009, 2:00 p.m.-3:55 p.m.
  Special Session on Algebraic Methods in Statistics and Probability, I
  Room 204, Noyes Lab
  Organizers:
  Marlos A. G. Viana, University of Illinois at Chicago viana@uic.edu
  

  • 2:00 p.m.
    Self-avoiding generating sequences for Fourier lattice designs.
    Henry P Wynn*, London School of Economics
    (1047-03-64)
  • 2:30 p.m.
    Kiefer-complete classes of designs for cubic mixture models.
    Thomas Klein*, Technische Universität München, Germany
    (1047-62-44)
  • 3:00 p.m.
    Non-Parametric Modeling and Survey Design for Censored Preference Data.
    Paul Kidwell*, Purdue University
    Yi Mao, Purdue University
    Guy Lebanon, Georgia Institute of Technology
    (1047-62-21)
  • 3:30 p.m.
    Dihedral Fourier Analysis in Statistical Optics.
    Marlos A.G. Viana*, University of Illinois at Chicago
    Vasudevan Lakshminarayanan, University of Waterloo, Waterloo, Canada
    (1047-42-180)
• Friday March 27, 2009, 2:00 p.m.-5:20 p.m.
  Special Session on Graph Theory, I
  Room 161, Noyes Lab
  Organizers:
  Alexander V. Kostochka, University of Illinois at Urbana-Champaign kostochk@math.uiuc.edu
  Douglas B. West, University of Illinois at Urbana-Champaign west@math.uiuc.edu
  

  • 2:00 p.m.
    Packing seagulls.
    Maria Chudnovsky, Columbia University
    Paul Seymour*, Princeton University
    (1047-05-314)
  • 2:30 p.m.
    Compact topological cliques in sparse graphs.
    Tao Jiang*, Miami University, Oxford, Ohio
    (1047-05-111)
  • 3:00 p.m.
    Finding minors in graphs with a given path structure.
    André Kündgen*, California State University San Marcos
    Michael Pelsmajer, Illinois Institute of Technology
    Radhika Ramamurthi, California State University San Marcos
    (1047-05-467)
  • 3:30 p.m.
    Graph Minors and graph linkages.
    Ken-ichi Kawarabayashi, National Institute of Informatics, Japan
    Gexin Yu*, College of William and Mary
    (1047-05-244)
  • 4:00 p.m.
    $K_5$-subdivisions in 5-connected nonplanar graphs.
    Jie Ma, Georgia Institute of Technology
    Xingxing Yu*, Georgia institute of Technology
    (1047-05-104)
  • 4:30 p.m.
    Teledomination in special graph classes: A survey of algorithmic and complexity results.
    Jan Kratochvil*, Charles University, Prague
    (1047-05-436)
  • 5:00 p.m.
    Rao's degree sequence conjecture and well-quasi-ordering tournaments by immersion.
    Maria Chudnovsky*, Columbia Univeristy
    Paul Seymour, Princeton Univeristy
    (1047-05-239)
• Friday March 27, 2009, 2:00 p.m.-5:20 p.m.
  Special Session on Probabilistic and Extremal Combinatorics, I
  Room 163, Noyes Lab
  Organizers:
  Jozsef Balogh, University of Illinois at Urbana-Champaign jobal@math.uiuc.edu
  Zoltan Furedi, University of Illinois at Urbana-Champaign z-furedi@math.uiuc.edu
  

  • 2:00 p.m.
    New results in Erdos-Frankl-Rodl theory.
    Jozsef Balogh, University of Illinois at Urbana-Champaign
    Bela Bollobas, Cambridge Univerity, UK and U. of Memphis, TN
    Miklos Simonovits*, Renyi Institute, Budapest, Hungary
    (1047-05-334)
  • 2:30 p.m.
    Random transceiver networks.
    Paul Balister*, University of Memphis
    Béla Bollobás, Cambridge University, UK, and University of Memphis
    Mark Walters, Queen Mary, University of London, UK
    (1047-60-419)
  • 3:00 p.m.
    On the sum-product problem.
    Jozsef Solymosi*, Department of Mathematics. University of British Columbia
    (1047-05-307)
  • 3:30 p.m.
    Counting graphs without a fixed subgraph.
    Jozsef Balogh, University of Illinois at Urbana-Champaign
    Wojciech Samotij*, University of Illinois at Urbana-Champaign
    (1047-05-339)
  • 4:00 p.m.
    On the minimum degree of minimal Ramsey graphs.
    Tibor Szabo*, McGill University
    Philipp Zumstein, ETH Zurich
    Stefanie Zuercher, ETH Zurich
    (1047-05-471)
  • 4:30 p.m.
    Independent dominating sets in graphs of girth five.
    Jacques A Verstraete*, University of California San Diego
    (1047-05-481)
  • 5:00 p.m.
    Phylogenetic combinatorics.
    Laszlo A Szekely*, University of South Carolina
    (1047-05-183)
• Friday March 27, 2009, 2:00 p.m.-2:20 p.m.
  Special Session on Mathematical Visualization, I
  Room 102, Altgeld Hall
  Organizers:
  George K. Francis, University of Illinois at Urbana-Champaign gfrancis@uiuc.edu
  Louis H. Kauffman, University of Illinois at Chicago kauffman@uic.edu
  Dennis Martin Roseman, University of Iowa roseman@math.uiowa.edu
  Andrew J. Hanson, Indiana University hanson@cs.indiana.edu
  

  • 2:00 p.m.
    Partiview in the Cube.
    Stuart Levy*, National Center for Supercomputing Applications, U Illinois, Urbana
    William Davis, University of Illinois, Urbana
    (1047-51-288)
• Friday March 27, 2009, 2:00 p.m.-4:55 p.m.
  Special Session on Holomorphic and CR Mappings, I
  Room 343, Altgeld Hall
  Organizers:
  John P. D'Angelo, University of Illinois at Urbana-Champaign jpda@math.uiuc.edu
  Jiri Lebl, University of Illinois at Urbana-Champaign jlebl@math.uiuc.edu
  Alex Tumanov, University of Illinois at Urbana-Champaign tumanov@math.uiuc.edu
  

  • 2:00 p.m.
    Möbius geometry of hypersurfaces.
    Michael D Bolt*, Calvin College
    (1047-32-408)
  • 2:30 p.m.
    CR singularities of real $4$-manifolds in ${\mathbb{C}}^3$.
    Adam Coffman*, Indiana University - Purdue University Fort Wayne
    (1047-32-54)
  • 3:00 p.m.
    Regularity in the CR embedding problem.
    Xianghong Gong*, University of Wisconsin
    Sidney M. Webster, University of Chicago
    (1047-32-479)
  • 3:30 p.m.
    Holomorphic Extensions in Toric Varieties.
    Malgorzata Aneta Marciniak*, Misssouri University of Science and Technology
    (1047-32-33)
  • 4:00 p.m.
    Geometry of Tube-like Domains in $\mathbb C^2$.
    Roman J. Dwilewicz*, Missouri University of Science and Technology
    (1047-32-457)
  • 4:30 p.m.
    Explicit Construction of Moduli Space of Bounded Complete Reinhardt Domains in $C^n$ and Hilbert 14th Problems.
    S. T. Stephen Yau*, University of Illinois at Chicago
    Rong Du, University of Illinois at Chicago
    Yun Gao, University of Illinois at Chicago
    (1047-53-53)
• Friday March 27, 2009, 2:00 p.m.-5:25 p.m.
  Session on Session for Contributed Papers, I
  Room 304, Noyes Lab
  

  • 2:15 p.m.
    LLL reduction and a conjecture of Gunnells.
    Darrin M. Doud*, Brigham Young University
    (1047-11-187)
  • 2:30 p.m.
    Powered sum formulas via term-wise integrations: a geometric point of view.
    Hung-ping Tsao*, Novato, California
    (1047-11-06)
  • 2:45 p.m.
    Variants the Diophantine equation $x! + 1 = y^2$.
    Alain Togbe*, Purdue University North Central
    (1047-11-343)
  • 3:00 p.m.
    Ramanujan Primes and Bertrand's Postulate.
    Jonathan Sondow*, New York, NY
    (1047-11-391)
  • 3:15 p.m.
    Flat Primes and Thin Primes.
    Kevin A Broughan*, University of Waikato, Hamilton, New Zealand
    (1047-11-56)
  • 3:30 p.m.
    Method of Infinite Ascent applied on $2^p.A^6 + B^3 = C^2$.
    Susil Kumar Jena*, KIIT University, Bhubaneswar-751024, Orissa, India
    (1047-11-09)
  • 3:45 p.m.
    On the Construction of Skew Quasi-Cyclic Codes.
    T Abualrub, American University of Sharjah, Sharjah, UAE
    A Ghrayeb, Concordia University, Montreal, Quebec
    N Aydin*, Kenyon College, Ohio, USA
    I Siap, Adiyaman Univ., Adiyaman, Turkey
    (1047-05-35)
  • 4:15 p.m.
    Mutually orthogonal latin squares based on groups.
    Anthony B Evans*, Wright State University
    (1047-05-28)
  • 4:30 p.m.
    Geometric Figures as Sets of Convergent, Divergent and Parallel Lines and Surfaces.
    Stewart E Brekke*, International University for Graduate Studies
    (1047-00-19)
  • 4:45 p.m.
    Deformation Theory as a generalization of Lie Theory.
    Lucian Miti Ionescu*, Illinois State University
    (1047-18-106)
  • 5:00 p.m.
    The $sl_3$ Selberg integral.
    S. Ole Warnaar*, The University of Queensland, Australia
    (1047-05-341)
  • 5:15 p.m.
    Using Mathematica to Visualize Bifurcation and Chaos in the Dynamics of Symplectic Integrators.
    O. Michael Melko*, Northern State University
    (1047-37-409)
• Friday March 27, 2009, 2:30 p.m.-5:20 p.m.
  Special Session on Differential Geometry and Its Applications, I
  Room 341, Altgeld Hall
  Organizers:
  Stephanie B. Alexander, University of Illinois at Urbana-Champaign stephanieb.alexander@gmail.com
  Jianguo Cao, University of Notre Dame cao.7@nd.edu
  

  • 2:30 p.m.
    Quasilinearization, Euler's inequality and Aleksandrov's curvature.
    Igor G Nikolaev*, University of Illinois at Urbana-Champaign
    (1047-53-253)
  • 3:00 p.m.
    Conjugate points and non injectivity of the exponential map.
    Keith Burns*, Northwestern University
    Benjamin Schmidt, University of Chicago
    (1047-53-66)
  • 3:30 p.m.
    Compact convex central cross-sections make surfaces quadric.
    Bruce M Solomon*, Indiana University, Bloomington
    (1047-53-271)
  • 4:00 p.m.
    Leafwise entropy rigidity for foliations.
    Chris Connell*, Indiana University, Bloomington
    Zhenyu Li, Indiana University, Bloomington
    (1047-53-299)
  • 4:30 p.m.
    Effective universal coverings and their applications.
    Alexander Nabutovsky*, University of Toronto
    (1047-53-150)
  • 5:00 p.m.
    Short geodesic loops on complete Riemannian manifolds.
    Regina Rotman*, University of Toronto
    (1047-53-164)
• Friday March 27, 2009, 2:30 p.m.-5:20 p.m.
  Special Session on Geometric Function Theory and Analysis on Metric Spaces, I
  Room 447, Altgeld Hall
  Organizers:
  Sergiy Merenkov, University of Illinois at Urbana-Champaign merenkov@uiuc.edu
  Jeremy Taylor Tyson, University of Illinois at Urbana-Champaign tyson@math.uiuc.edu
  Jang-Mei Wu, University of Illinois at Urbana-Champaign wu@math.uiuc.edu
  

  • 2:00 p.m.
    Dynamics of quasiconformal fields.
    Jani Onninen*, Syracuse University
    Tadeusz Iwaniec, Syracuse University
    Leonid V Kovalev, Syracuse University
    (1047-30-489)
  • 2:30 p.m.
    Thurston obstructions and Ahlfors regular conformal dimension.
    Kevin M Pilgrim*, Dept. Math., Indiana University
    Peter Haissinsky, Universite de Provence
    (1047-37-247)
  • 3:00 p.m.
    Invariant Peano curves of expanding Thurston maps.
    Daniel Meyer*, Department of Mathematics and Statistics, University of Helsinki
    (1047-37-309)
  • 3:30 p.m.
    Uniform Metric Spaces and Pointed Gromov-Hausdorff Distance.
    David A Herron*, University of Cincinnati
    (1047-51-437)
  • 4:00 p.m.
    Metric cotype and quasisymmetric embeddings.
    Kevin Wildrick*, University of Jyväskylä
    Ellen Veomett, California State University, East Bay
    (1047-46-134)
  • 4:30 p.m.
    Finite distortion, value distribution, and cohomology.
    Pekka J. Pankka*, University of Michigan
    (1047-30-176)
  • 5:00 p.m.
    On approximate differentiability of the maximal function.
    Piotr Hajlasz*, University of Pittsburgh
    Jan Maly, Charles University and Purkyne University (Czech Republic)
    (1047-46-410)
• Friday March 27, 2009, 3:00 p.m.-4:45 p.m.
  Special Session on Topological Field Theories, Representation Theory, and Algebraic Geometry, I
  Room 347, Altgeld Hall
  Organizers:
  Thomas Nevins, University of Illinois at Urbana-Champaign nevins@uiuc.edu
  David Ben-Zvi, University of Texas at Austin benzvi@math.utexas.edu
  

  • 3:00 p.m.
    Representation Theory and Equivariant Topological Field Theories.
    Dmytro Shklyarov*, Kansas State University
    (1047-81-102)
  • 4:00 p.m.
    Moduli problems and localization functors in orbifold CFT.
    Matthew M Szczesny*, Boston University
    (1047-14-142)
• Friday March 27, 2009, 3:00 p.m.-5:20 p.m.
  Special Session on The Interface Between Number Theory and Dynamical Systems, I
  Room 245, Altgeld Hall
  Organizers:
  Florin Boca, University of Illinois at Urbana-Champaign fboca@math.uiuc.edu
  Jeffrey Lagarias, University of Michigan lagarias@umich.edu
  Kenneth Stolarsky, University of Illinois at Urbana-Champaign stolarsk@math.uiuc.edu
  

  • 3:00 p.m.
    (Non)-uniform bounds for rational preperiodic points in arithmetic dynamics.
    Robert L. Benedetto*, Amherst College
    (1047-11-73)
  • 4:00 p.m.
    Dynamical Mordell-Lang problems.
    Thomas J Tucker*, University of Rochester
    (1047-11-23)
  • 4:30 p.m.
    Galois theory of iterated Euclidean constructions.
    R. Patrick Morton*, Indiana University - Purdue University at Indianapolis (IUPUI)
    (1047-12-464)
  • 5:00 p.m.
    On the Number of Rational Pre-Images of the Origin Under Quadratic Dynamical Systems.
    Xander Faber, McGill University
    Benjamin Hutz*, Amherst College
    (1047-11-445)
• Friday March 27, 2009, 3:00 p.m.-5:20 p.m.
  Special Session on Operator Algebras and Operator Spaces, I
  Room 145, Altgeld Hall
  Organizers:
  Zhong-Jin Ruan, University of Illinois at Urbana-Champaign ruan@math.uiuc.edu
  Florin P. Boca, University of Illinois at Urbana-Champaign fboca@math.uiuc.edu
  Marius Junge, University of Illinois at Urbana-Champaign junge@math.uiuc.edu
  

  • 3:00 p.m.
    Continuous Deformations of Commuting Squares.
    Remus Nicoara*, University of Tennessee, Knoxville
    (1047-47-465)
  • 3:30 p.m.
    Property $T$ for Discrete Quantum Groups.
    Pierre Fima*, University of Illinois at Urbana-Champaign
    (1047-46-355)
  • 4:00 p.m.
    Normalizers of Subalgebras of Finite von Neumann Algebras.
    Alan D Wiggins*, Vanderbilt University
    Junsheng Fang, Texas A&M University
    Roger Smith, Texas A&M University
    Stuart White, University of Glasgow
    (1047-46-480)
  • 4:30 p.m.
    Intersection theory in a finite von Neumann algebra.
    Hari Bercovici*, Indiana University
    (1047-46-348)
  • 5:00 p.m.
    Strong sums of projections.
    Victor Kaftal*, University of Cincinnati
    (1047-47-311)
• Friday March 27, 2009, 5:40 p.m.-6:30 p.m.
  Invited Address
  L-functions: Identities and estimates.
  Room 314, Altgeld Hall
  Akshay Venkatesh*, New York University-Courant Institute
  (1047-11-01)

Saturday March 28, 2009

• Saturday March 28, 2009, 7:30 a.m.-4:00 p.m.
  Meeting Registration
  Room 321 (Math Dept Common Room), Altgeld Hall
• Saturday March 28, 2009, 7:30 a.m.-4:00 p.m.
  Exhibit and Book Sale
  Math Library (2nd Floor), Altgeld Hall
• Saturday March 28, 2009, 8:00 a.m.-10:50 a.m.
  Special Session on Algebra, Geometry and Combinatorics, I
  Room 217, Noyes Lab
  Organizers:
  Rinat Kedem, University of Illinois at Urbana-Champaign rinat@uiuc.edu
  Alexander T. Yong, University of Illinois at Urbana-Champaign ayong@uiuc.edu
  

  • 8:00 a.m.
    MV polytopes and components of quiver varieties.
    Joel Kamnitzer*, University of Toronto
    Pierre Baumann, Strasbourg
    (1047-14-155)
  • 8:30 a.m.
    Quiver Grassmannians.
    Alistair Savage*, University of Ottawa
    (1047-17-449)
  • 9:00 a.m.
    Rank functions and quiver representations.
    Ryan Kinser*, University of Michigan
    (1047-16-31)
  • 9:30 a.m.
    Fusion of affine Grassmannians.
    Peter Magyar*, Michigan State University
    (1047-22-484)
  • 10:00 a.m.
    Charge=Height.
    Bogdan Ion*, University of Pittsburgh
    (1047-17-333)
  • 10:30 a.m.
    Noncrossing partitions and the shard intersection order.
    Nathan Reading*, North Carolina State University
    (1047-05-353)
• Saturday March 28, 2009, 8:00 a.m.-11:20 a.m.
  Special Session on Nonlinear Partial Differential Equations and Applications, I
  room 241, Altgeld Hall
  Organizers:
  Igor Kukavica, University of Southern California kukavica@usc.edu
  Anna L. Mazzucato, Pennsylvania State University mazzucat@math.psu.edu
  

  • 8:00 a.m.
    Regularity of solutions for the critical N-dimensional Burgers' equation.
    Chi Hin Chan*, The University of Texas at Austin. Department of Mathematics
    Magdalena Czubak, University of Toronto. Department of Mathematics
    (1047-35-403)
  • 8:30 a.m.
    Exterior Boundary-Value Problem with Application in General Relativity.
    Nicolae Tarfulea*, Purdue University Calumet
    (1047-35-386)
  • 9:00 a.m.
    Instantaneous boundary-tangency of singularity curves in compressible fluid flow.
    David Hoff*, Department of Mathematics/Indiana University
    Misha Perepelitsa, Department of Mathematics/Vanderbilt University
    (1047-35-59)
  • 9:30 a.m.
    Vanishing viscosity in the plane for nondecaying initial vorticity.
    Elaine Cozzi*, Carnegie Mellon University
    (1047-76-466)
  • 10:00 a.m.
    On the maximal enstrophy growth rate for solutions to the 3D Navier-Stokes equations.
    Alexey Cheskidov*, University of Illinois at Chicago
    (1047-35-492)
  • 10:30 a.m.
    The Domain of Analyticity of Solutions to the Three-Dimensional Euler Equations.
    Igor Kukavica, University of Southern California
    Vlad Vicol*, University of Southern California
    (1047-35-308)
  • 11:00 a.m.
    Time-Periodic Interfacial Fluid Flows.
    David M Ambrose*, Drexel University
    (1047-35-351)
• Saturday March 28, 2009, 8:30 a.m.-11:20 a.m.
  Special Session on Complex Dynamics and Value Distribution, II
  Room 441, Altgeld Hall
  Organizers:
  Aimo Hinkkanen, University of Illinois at Urbana-Champaign aimo@uiuc.edu
  Joseph B. Miles, University of Illinois at Urbana-Champaign joe@math.uiuc.edu
  

  • 8:30 a.m.
    Repelling fixed points are dense in the Julia set of a Rational or Entire Semigroup.
    Rich L Stankewitz*, Ball State University
    (1047-30-169)
  • 9:00 a.m.
    Bounded approximation on open and closed subsets of the complex plane.
    Arthur A. Danielyan*, Department of Mathematics and Statistics, Univesity of South Florida
    (1047-30-201)
  • 9:30 a.m.
    Tropical Nevanlinna theory.
    Ilpo Laine*, University of Joensuu, Finland
    (1047-14-70)
  • 10:00 a.m.
    A special class of functions in the unit disc as coefficients for differential equations.
    Linda R. Sons*, Northern Illinois University
    (1047-30-382)
  • 10:30 a.m.
    Convergence of backward-iteration sequences with bounded hyperbolic step in higher dimension.
    Olena Ostapyuk*, Kansas State University
    (1047-30-389)
  • 11:00 a.m.
    Pointed Gromov-Hausdorff Distance.
    David A Herron*, University of Cincinnati
    (1047-51-438)
• Saturday March 28, 2009, 8:30 a.m.-11:15 a.m.
  Special Session on Topological Field Theories, Representation Theory, and Algebraic Geometry, II
  Room 347, Altgeld Hall
  Organizers:
  Thomas Nevins, University of Illinois at Urbana-Champaign nevins@uiuc.edu
  David Ben-Zvi, University of Texas at Austin benzvi@math.utexas.edu
  

  • 8:30 a.m.
    Character sheaves.
    David Ben-Zvi, Texas - Austin
    David Nadler*, Northwestern
    (1047-14-151)
  • 9:30 a.m.
    The projective McKay correspondence.
    Christopher Brav*, University of Toronto
    (1047-14-300)
  • 10:30 a.m.
    Stability conditions, Springer fibers and braids with multiplied threads.
    Rina Anno*, University of Chicago
    (1047-14-421)
• Saturday March 28, 2009, 8:30 a.m.-11:20 a.m.
  Special Session on Local and Homological Methods in Commutative Algebra, II
  Room 165, Noyes Lab
  Organizers:
  Florian Enescu, Georgia State University fenescu@gsu.edu
  Sandra Spiroff, University of Mississippi spiroff@olemiss.edu
  

  • 8:30 a.m.
    Monomial c-sequences.
    Hamid Kulosman*, University of Louisville
    (1047-13-338)
  • 9:00 a.m.
    Asymptotic Growth of Algebras Associated to Powers of Ideals.
    S Dale Cutkosky*, University of Missouri
    Juergen Herzog, University of Duisburg-Essen
    Hema Srinivasan, University of Missouri
    (1047-13-379)
  • 9:30 a.m.
    3-Standardness of the Maximal Ideal.
    H. Ananthnarayan*, University of Kansas
    (1047-13-272)
  • 10:00 a.m.
    Uniform equivalence of symbolic and adic topologies.
    C. Huneke, University of Kansas
    D. Katz*, University of Kansas
    J. Validashti, University of Kansas
    (1047-01-159)
  • 10:30 a.m.
    Relative Multiplicities of Graded Algebras.
    Javid Validashti*, The University of Kansas
    (1047-13-122)
  • 11:00 a.m.
    Hilbert-Kunz Functions without the Normal Condition.
    C-Y. Jean Chan*, Central Michigan University
    (1047-13-337)
• Saturday March 28, 2009, 8:30 a.m.-11:20 a.m.
  Special Session on Time, Scale and Frequency Methods in Harmonic Analysis, II
  Room 141, Altgeld Hall
  Organizers:
  Richard S. Laugesen, University of Illinois at Urbana-Champaign Laugesen@illinois.edu
  Darrin M. Speegle, St. Louis University speegled@slu.edu
  

  • 8:30 a.m.
    The trivial intersection property of generalized multiresolution analyses.
    Veronika Furst*, Fort Lewis College
    (1047-43-330)
  • 9:00 a.m.
    Notions of equivalence of generalized multiresolution analyses.
    Judith A Packer*, University of Colorado at Boulder
    (1047-42-453)
  • 9:30 a.m.
    Biorthogonal Wavelets with 6-fold Axial Symmetry for Hexagonal Data and Triangle Surface Multiresolution Processing.
    Qingtang Jiang*, University of Missouri - St. Louis
    (1047-42-274)
  • 10:00 a.m.
    Fast computation of spectral centroids.
    Matthew Fickus*, Air Force Institute of Technology
    Melody L. Massar, Air Force Institute of Technology
    (1047-42-13)
  • 10:30 a.m.
    Kaczmarz algorithms and frames.
    Wojciech Czaja*, University of Maryland, College Park
    James H. Tanis, University of Maryland, College Park
    (1047-43-491)
  • 11:00 a.m.
    Wiener's Lemma and memory localization.
    Ilya A Krishtal*, Northern Illinois University
    (1047-43-295)
• Saturday March 28, 2009, 8:30 a.m.-11:20 a.m.
  Special Session on Differential Geometry and Its Applications, II
  Room 341, Altgeld Hall
  Organizers:
  Stephanie B. Alexander, University of Illinois at Urbana-Champaign stephanieb.alexander@gmail.com
  Jianguo Cao, University of Notre Dame cao.7@nd.edu
  

  • 8:30 a.m.
    Nonuniform Thickness.
    Oguz C. Durumeric*, University of Iowa
    (1047-53-321)
  • 9:00 a.m.
    Boundary effects and rigidity on compact manifolds with nonnegative or positive scalar curvature.
    Xiaodong Wang*, Michigan State University
    (1047-53-357)
  • 9:30 a.m.
    Scalar Curvature Behavior of Kähler-Ricci Flow.
    Zhou Zhang*, University of Michigan, at Ann Arbor
    (1047-53-279)
  • 10:00 a.m.
    Relative isometric embeddings of Riemannian manifolds.
    Mohammad Ghomi*, Georgia Tech
    Robert E Greene, UCLA
    (1047-53-296)
  • 10:30 a.m.
    Volume growth and the topology of manifolds with nonnegative Ricci curvature.
    Michael Munn*, City University of New York
    (1047-53-37)
  • 11:00 a.m.
    Collapsing manifolds-with-boundary.
    Jeremy Wong*, University of Georgia
    (1047-53-405)
• Saturday March 28, 2009, 8:30 a.m.-11:20 a.m.
  Special Session on The Interface Between Number Theory and Dynamical Systems, II
  Room 245, Altgeld Hall
  Organizers:
  Florin Boca, University of Illinois at Urbana-Champaign fboca@math.uiuc.edu
  Jeffrey Lagarias, University of Michigan lagarias@umich.edu
  Kenneth Stolarsky, University of Illinois at Urbana-Champaign stolarsk@math.uiuc.edu
  

  • 8:30 a.m.
    Sturmian adic dynamical systems in the Stern-Brocot (Farey) diagram.
    Karl Petersen*, University of North Carolina at Chapel Hill
    (1047-37-20)
  • 9:00 a.m.
    Palindromic properties of infinite sequences with applications to Number Theory.
    Amy Glen*, The Mathematics Institute, Reykjavik University
    (1047-11-206)
  • 9:30 a.m.
    Division Point Measures Related to Subdivisions.
    Jeanette Olli*, University of North Carolina at Chapel Hill
    (1047-37-192)
  • 10:00 a.m.
    The Mean-Median Map.
    Marc Chamberland*, Grinnell College
    (1047-37-264)
  • 10:30 a.m.
    Critical orbits in arithmetic dynamics.
    Rafe Jones*, College of the Holy Cross
    (1047-11-394)
  • 11:00 a.m.
    Multidimensional polynomial iterations and Ismail's q-discriminants.
    Khang Tran*, University of Illinois
    Kenneth B Stolarsky, University of Illinois
    (1047-11-156)
• Saturday March 28, 2009, 8:30 a.m.-11:20 a.m.
  Special Session on q-Series and Partitions, II
  Room 147, Altgeld Hall
  Organizers:
  Bruce Berndt, University of Illinois at Urbana-Champaign berndt@math.uiuc.edu
  Ae Ja Yee, Pennsylvania State University yee@math.psu.edu
  

  • 8:30 a.m.
    Generalized Borcherds products and Ramanujan's mock theta function $\omega(q)$.
    Ken Ono*, U. Wisconsin, Madison
    (1047-11-87)
  • 9:00 a.m.
    Multiplicative q-hypergeometric series arising from real quadratic fields.
    Kathrin Bringmann*, University of Cologne
    (1047-05-310)
  • 9:30 a.m.
    Asymptotics for cranks and ranks of partitions.
    Karl Mahlburg*, Massachusetts Institute of Technology
    Kathrin Bringmann, University of Cologne, Germany
    Rob Rhoades, Ecole Polytechnique Federale de Lausanne, Switzerland
    (1047-11-251)
  • 10:00 a.m.
    Asymptotics and transformations of some Mordell integrals.
    Richard J. McIntosh*, University of Regina, Saskatchewan, Canada
    (1047-11-250)
  • 10:30 a.m.
    Partition identities that arise from the universal mock theta functions.
    Soon-Yi Kang*, Korea Advanced Institute of Science and Technology
    (1047-11-433)
  • 11:00 a.m.
    Applications of differential equations for {E}isenstein series on level two subgroups of the modular group.
    Tim Huber*, Iowa State University
    (1047-11-396)
• Saturday March 28, 2009, 8:30 a.m.-11:20 a.m.
  Special Session on Concrete Aspects of Real Positive Polynomials, II
  Room 162, Noyes Lab
  Organizers:
  Victoria Powers, Emory University vicki@mathcs.emory.edu
  Bruce Reznick, University of Illinois at Urbana-Champaign reznick@illinois.edu
  

  • 8:30 a.m.
    Polynomials non-negative on the strip.
    Murray A. Marshall*, Department of Mathematics and Statistics, University of Saskatchewan
    (1047-14-60)
  • 9:00 a.m.
    Positivity in power series rings.
    Salma Kuhlmann*, University of Saskatchewan, Canada
    J. Cimpric, University of Ljubljana, Slovenia
    M. Marshall, University of Saskatchewan
    (1047-12-331)
  • 9:30 a.m.
    Cubic Column Relations in Truncated Moment Problems.
    Raúl E Curto*, The University of Iowa
    (1047-47-427)
  • 10:00 a.m.
    A new, simpler finitary construction of the real closure of a discrete ordered field.
    Charles N. Delzell*, Louisiana State University
    (1047-12-428)
  • 10:30 a.m.
    Pólya's Theorem with Zeros.
    Mari F. Castle*, Kennesaw State University
    Victoria Powers, Emory University
    Bruce Reznick, University of Illinois, Urbana
    (1047-14-381)
  • 11:00 a.m.
    Pólya's Theorem, Applications and Generalizations.
    Victoria Powers*, Emory University
    (1047-14-344)
• Saturday March 28, 2009, 8:30 a.m.-10:50 a.m.
  Special Session on The Logic and Combinatorics of Algebraic Structures, II
  Room 203, Noyes Lab
  Organizers:
  John Snow, Concordia University john.snow@cune.edu
  Jeremy Alm, Illinois College alm.academic@gmail.com
  

  • 8:30 a.m.
    Affine complete $G$-sets.
    Peter Mayr*, JKU Linz, Austria
    Andras Pongracz, Eotvos Lorand University
    (1047-08-40)
  • 9:00 a.m.
    The Grothendieck semiring of the group of complex roots of unity.
    Vinicius Cifu Lopes*, Department of Mathematics, University of Illinois at Urbana-Champaign
    (1047-03-29)
  • 9:30 a.m.
    Categorical Equivalence of Unary Algebras.
    Clifford Bergman*, Iowa State University, Department of Mathematics
    (1047-08-109)
  • 10:00 a.m.
    Free algebras and hereditarily closed families.
    Joel Berman*, University of Illinois at Chicago
    (1047-08-145)
  • 10:30 a.m.
    Residually finite varieties.
    Keith A. Kearnes*, University of Colorado
    Ross D. Willard, University of Waterloo
    (1047-08-57)
• Saturday March 28, 2009, 8:30 a.m.-11:20 a.m.
  Special Session on Graph Theory, II
  Room 161, Noyes Lab
  Organizers:
  Alexander V. Kostochka, University of Illinois at Urbana-Champaign kostochk@math.uiuc.edu
  Douglas B. West, University of Illinois at Urbana-Champaign west@math.uiuc.edu
  

  • 8:30 a.m.
    Injective colorings of sparse graphs.
    Daniel W Cranston*, DIMACS, Rutgers
    Seog-Jin Kim, Konkuk University, Seoul, Korea
    Gexin Yu, College of William & Mary, Williamsburg, VA
    (1047-05-154)
  • 9:00 a.m.
    k-fold list colorings with Hall's condition.
    Jeno Lehel*, The University of Memphis
    (1047-05-473)
  • 9:30 a.m.
    The rank-chromatic number and the rank-flow number.
    Luis A Goddyn*, Simon Fraser University
    (1047-05-414)
  • 10:00 a.m.
    Graph Packing, Game Coloring and $2$-Coloring Number.
    H. A. Kierstead*, Arizona State University
    A. V. Kostochka, University of Illinois, Urbana and Institute of Mathematics, Novosibirsk
    (1047-05-401)
  • 10:30 a.m.
    On Saturation Numbers.
    Ronald J. Gould*, Emory University, Atlanta, GA 30322
    (1047-05-101)
  • 11:00 a.m.
    Saturation Numbers.
    Ralph Faudree*, University of Memphis
    (1047-05-52)
• Saturday March 28, 2009, 8:30 a.m.-11:20 a.m.
  Special Session on Probabilistic and Extremal Combinatorics, II
  Organizers:
  Jozsef Balogh, University of Illinois at Urbana-Champaign jobal@math.uiuc.edu
  Zoltan Furedi, University of Illinois at Urbana-Champaign z-furedi@math.uiuc.edu
  

  • 8:30 a.m.
    Extremal problems for multipartite graphs.
    Rahil Baber, University College London
    J Robert Johnson, Queen Marys University of London
    John Talbot*, University College London
    (1047-05-260)
  • 9:00 a.m.
    On Avoider-Enforcer games.
    József Balogh, University of Illinois, Urbana-Champaign
    Ryan Martin*, Iowa State University
    (1047-05-256)
  • 9:30 a.m.
    Bilinear and Quadratic Variants on the Littlewood-Offord Problem.
    Kevin P Costello*, Georgia Institute of Technology
    (1047-05-441)
  • 10:00 a.m.
    Optimal Random Matchings on Trees and Applications.
    Bela Csaba*, Dept. of Mathematics, Western Kentucky University
    Ali Shokoufandeh, Dept. of Computer Science, Drexel University
    Jeff Abrahamson, Dept. of Computer Science, Drexel University
    (1047-05-266)
  • 10:30 a.m.
    Extremal problems for counting homomorphisms.
    Jonathan Cutler*, Montclair State University
    A. J. Radcliffe, University of Nebraska-Lincoln
    (1047-05-276)
  • 11:00 a.m.
    A simple entropy proof of the Kahn-Lovasz theorem.
    Andrew J. Radcliffe*, University of Nebraska-Lincoln
    Jonathan Cutler, Montclair State University
    (1047-05-245)
• Saturday March 28, 2009, 8:30 a.m.-11:20 a.m.
  Special Session on Geometric Function Theory and Analysis on Metric Spaces, II
  Room 447, Altgeld Hall
  Organizers:
  Sergiy Merenkov, University of Illinois at Urbana-Champaign merenkov@uiuc.edu
  Jeremy Taylor Tyson, University of Illinois at Urbana-Champaign tyson@math.uiuc.edu
  Jang-Mei Wu, University of Illinois at Urbana-Champaign wu@math.uiuc.edu
  

  • 8:30 a.m.
    Intrinsic regularity of sub-Riemannian minimal surfaces in the first Heisenberg group.
    Luca Capogna*, University of Arkansas
    (1047-35-242)
  • 9:00 a.m.
    Wolfe's theorem in Banach spaces.
    M. A. Snipes*, University of Michigan
    (1047-30-444)
  • 9:30 a.m.
    Metric currents and differentiable structures.
    Marshall Williams*, University of Michigan
    (1047-28-486)
  • 10:00 a.m.
    Modulus of measures and conformal dimension.
    Hrant Hakobyan*, University of Toronto
    Ilia Binder, University of Toronto
    (1047-28-448)
  • 10:30 a.m.
    Uniformization of Sierpinski carpets.
    Mario Bonk*, University of Michigan
    (1047-30-402)
  • 11:00 a.m.
    Quasiregular mappings to generalized manifolds.
    Kai Rajala*, University of Jyvaskyla
    Jani Onninen, Syracuse University
    (1047-30-127)
• Saturday March 28, 2009, 8:30 a.m.-11:20 a.m.
  Special Session on Mathematical Visualization, II
  Room 102, Altgeld Hall
  Organizers:
  George K. Francis, University of Illinois at Urbana-Champaign gfrancis@uiuc.edu
  Louis H. Kauffman, University of Illinois at Chicago kauffman@uic.edu
  Dennis Martin Roseman, University of Iowa roseman@math.uiowa.edu
  Andrew J. Hanson, Indiana University hanson@cs.indiana.edu
  

  • 8:30 a.m.
    Geometric Generation of Permutation Sequences.
    Dennis M Roseman*, Department of Mathematics, University of Iowa
    (1047-51-108)
  • 9:00 a.m.
    Archytas of Tarentum: Savior to the Delians.
    Colin B. P. McKinney*, University of Iowa
    (1047-01-103)
  • 9:30 a.m.
    Interactive Geometry Illustrations for Teaching, Research, and Publication.
    Thomas F. Banchoff*, Brown University
    Michael Schwarz, University of Illinois, Urbana
    (1047-51-287)
  • 10:00 a.m.
    An Explicit Eversion of the 2-sphere.
    J Scott Carter*, University of South Alabama
    (1047-57-78)
  • 10:30 a.m.
    Stability of the Fold.
    Herbert Edelsbrunner*, Duke University
    (1047-51-85)
  • 11:00 a.m.
    It's Nice To See This Stuff Actually Used For Something.
    John C. Hart*, University of Illinois, Urbana
    (1047-51-167)
• Saturday March 28, 2009, 8:30 a.m.-11:25 a.m.
  Session on Session for Contributed Papers, II
  Room 304, Noyes Lab
  

  • 8:30 a.m.
    A Construction of an Infinite Family of 2-Arc Transitive Polygonal Graphs of Arbitrary Odd Girth.
    Eric A. Swartz*, The Ohio State University
    (1047-05-255)
  • 8:45 a.m.
    Some useful operations and their applications.
    Arman Shokrollahi*, Ramanujan Institute for Advanced Study in Mathematics
    (1047-68-08)
  • 9:00 a.m.
    Potentially $H$-bigraphic sequences.
    John Roger Schmitt*, Middlebury College
    Michael Ferrara, U. Akron
    Michael Jacobson, U. Colorado, Denver
    Mark Siggers, Simon Fraser U.
    (1047-05-114)
  • 9:15 a.m.
    Pfaffian Orientations in Cubic Polyhex Graphs on the Torus and the Klein Bottle.
    Ye Dong*, West Virginia University
    (1047-05-283)
  • 9:30 a.m.
    A Characterization of Almost CIS Graphs.
    Yezhou Wu*, West Virginia University
    Wenan Zang, University of Hong Kong
    Cun-Quan Zhang, West Virginia University
    (1047-05-368)
  • 9:45 a.m.
    On 2-local isometries on continuous vector-valued function spaces.
    Hasan A Al-Halees*, Saginaw Valley State University
    Richard J Fleming, Central Michigan University
    (1047-47-36)
  • 10:00 a.m.
    Boundedness on inhomogeneous Lipschitz spaces of fractional integrals, singular integrals and hypersingular integrals associated to non-doubling measures.
    A. Eduardo Gatto*, DePaul University
    (1047-28-55)
  • 10:15 a.m.
    A More Accurate Pooled Standard Deviation.
    Craig M. Browne*, Edgewood, New Mexico, USA
    (1047-62-178)
  • 10:30 a.m.
    Independence number of 2-factor-plus-triangles graphs.
    Jennifer Vandenbussche*, Southern Polytechnic State University
    Douglas B. West, University of Illinois at Urbana-Champaign
    (1047-05-126)
  • 10:45 a.m.
    Minimizing the number of episodes on a species tree - an extension of Gallai's theorem on intervals.
    Eva Czabarka*, University of South Carolina
    Laszlo A Szekely, University of South Carolina
    Todd J Vision, University of North Carolina
    (1047-05-191)
  • 11:00 a.m.
    The sign of a permutation of a multiset and Lozanić's Triangle.
    Stephen G. Hartke*, University of Nebraska-Lincoln
    A. J. Radcliffe, University of Nebraska-Lincoln
    Raghunath Tewari, University of Nebraska-Lincoln
    (1047-05-378)
  • 11:15 a.m.
    The n-Dimensional Pythagorean Theorem via the Divergence Theorem.
    Noah H Rhee*, University of Missouri-Kansas City
    Larry Eifler, University of Missouri-Kansas City
    (1047-51-62)
• Saturday March 28, 2009, 9:00 a.m.-11:50 a.m.
  Special Session on Number Theory in the Spirit of Erdos, II
  Room 143, Altgeld Hall
  Organizers:
  Kevin Ford, University of Illinois at Urbana-Champaign ford@math.uiuc.edu
  A. J. Hildebrand, University of Illinois at Urbana-Champaign hildebr@math.uiuc.edu
  

  • 9:00 a.m.
    The Hardy-Littlewood Prime Tuple Conjecture and Gaps Between Consecutive Primes.
    Dan Goldston*, San Jose State University
    (1047-11-430)
  • 10:00 a.m.
    Some Conjectures of Erdős on Consecutive Integers.
    D. A. Goldston, San Jose State University
    S. W. Graham*, Central Michigan University
    J. Pintz, Renyi Mathematical Institute of the Hungary Academy of Sciences
    C. Y. Yıldırım, Bogazici University
    (1047-11-42)
  • 10:30 a.m.
    Lattice Points Close to a Smooth Curve and Applications.
    Ognian Trifonov*, University of South Carolina
    (1047-11-367)
  • 11:00 a.m.
    Sums and Products in C[x].
    Ernie Croot*, Georgia Tech
    (1047-11-350)
  • 11:30 a.m.
    Wieferich pairs and Barker sequences.
    Michael J. Mossinghoff*, University of South Carolina and Davidson College
    (1047-11-285)
• Saturday March 28, 2009, 9:00 a.m.-11:20 a.m.
  Special Session on Hyperbolic Geometry and Teichmuller Theory, II
  Room 443, Altgeld Hall
  Organizers:
  Jason Deblois, University of Illinois at Chicago jdelbois@math.uic.edu
  Richard P. Kent, IV, Brown University rpkfour@gmail.com
  Christopher J. Leininger, University of Illinois at Urbana-Champaign clein@math.uiuc.edu
  

  • 9:00 a.m.
    Moduli spaces of hyperbolic manifolds.
    Richard Canary*, University of Michigan
    Peter Storm, University of Pennsylvania
    (1047-57-291)
  • 9:30 a.m.
    Quasi-convexity of balls in Teichmueller space.
    Anna B Lenzhen*, ANR Caen, France
    Rafi Kasra, University of Oklahoma
    (1047-51-349)
  • 10:00 a.m.
    Rank of the fundamental group of hyperbolic mapping tori.
    Ian Biringer, University of Chicago
    Juan Souto*, University of Michigan
    (1047-51-105)
  • 10:30 a.m.
    Modular character varieties of knots.
    Ben Klaff*, University of Illinois-Chicago
    Peter B. Shalen, University of Illinois-Chicago
    (1047-57-387)
  • 11:00 a.m.
    Dynamics of Generalized Interval Exchanges.
    Vaibhav Gadre*, Caltech
    (1047-37-360)
• Saturday March 28, 2009, 9:00 a.m.-11:20 a.m.
  Special Session on Geometric Group Theory, II
  Room 445, Altgeld Hall
  Organizers:
  Sergei V. Ivanov, University of Illinois at Urbana-Champaign ivanov@math.uiuc.edu
  Ilya Kapovich, University of Illinois at Urbana-Champaign kapovich@math.uiuc.edu
  Igor Mineyev, University of Illinois at Urbana-Champaign mineyev@math.uiuc.edu
  Paul E. Schupp, University of Illinois at Urbana-Champaign schupp@math.uiuc.edu
  

  • 9:00 a.m.
    Combinatorial models of Julia sets and Group Theory.
    Volodymyr Nekrashevych*, Texas A&M University
    (1047-20-418)
  • 10:00 a.m.
    Combination and separation.
    J F Manning*, SUNY at Buffalo
    E Martínez-Pedroza, McMaster University
    (1047-20-322)
  • 10:30 a.m.
    Actions of Maximal Growth.
    Yuri A. Bahturin, Memorial University, Canada
    Alexander Y. Olshanskii*, Vanderbilt University
    (1047-20-196)
  • 11:00 a.m.
    Ranks of subgroups of free groups.
    D. B. McReynolds*, University of Chicago
    Larsen Louder, University of Michigan
    (1047-20-461)
• Saturday March 28, 2009, 9:00 a.m.-10:55 a.m.
  Special Session on Algebraic Methods in Statistics and Probability, II
  Room 204, Noyes Lab
  Organizers:
  Marlos A. G. Viana, University of Illinois at Chicago viana@uic.edu
  

  • 9:00 a.m.
    On Riesz and Wishart Distributions associated with decomposable undirected graphs.
    Steen Andersson*, Indiana University
    Thomas Klein, Zentrum Mathematik, Munich, Germany
    (1047-62-115)
  • 9:30 a.m.
    Some results on connectivity of fibers with a subset of a Markov basis.
    Akimichi Takemura*, Graduate School of Information Science and Technology, University of Tokyo
    Hisayuki Hara, Department of Technology Management for Innovation, University of Tokyo
    (1047-62-50)
  • 10:00 a.m.
    Maximal Invariants Over Symmetric Cones.
    Ahmad Saeid Yasamin*, Statistical and Applied Mathematical Sciences Institute
    (1047-62-27)
  • 10:30 a.m.
    Smoothness of Gaussian conditional independence models.
    Mathias Drton, University of Chicago
    Han Xiao*, University of Chicago
    (1047-62-188)
• Saturday March 28, 2009, 9:00 a.m.-11:20 a.m.
  Special Session on Operator Algebras and Operator Spaces, II
  Room 145, Altgeld Hall
  Organizers:
  Zhong-Jin Ruan, University of Illinois at Urbana-Champaign ruan@math.uiuc.edu
  Florin P. Boca, University of Illinois at Urbana-Champaign fboca@math.uiuc.edu
  Marius Junge, University of Illinois at Urbana-Champaign junge@math.uiuc.edu
  

  • 9:00 a.m.
    Hyperrigid operator systems.
    William Arveson*, University of California, Berkeley
    (1047-47-194)
  • 10:00 a.m.
    Classifying Hilbert Modules.
    Nate Brown*, Penn State University
    (1047-46-205)
  • 10:30 a.m.
    On AF embeddability of continuous fields.
    Marius Dadarlat*, Purdue University
    (1047-46-346)
  • 11:00 a.m.
    Perturbations of Finite Rank Maps with applications to Nuclear C*-algebras.
    Caleb A Eckhardt*, University of Illinois at Urbana-Champaign
    (1047-46-459)
• Saturday March 28, 2009, 9:00 a.m.-11:25 a.m.
  Special Session on Holomorphic and CR Mappings, II
  Room 343, Altgeld Hall
  Organizers:
  John P. D'Angelo, University of Illinois at Urbana-Champaign jpda@math.uiuc.edu
  Jiri Lebl, University of Illinois at Urbana-Champaign jlebl@math.uiuc.edu
  Alex Tumanov, University of Illinois at Urbana-Champaign tumanov@math.uiuc.edu
  

  • 8:30 a.m.
    A note on the weak holomorphicity and analyticity of distributions.
    Chia-chi Tung*, Minnesota State University, Mankato
    (1047-32-450)
  • 9:00 a.m.
    Sharp Estimates for the $\bar{\partial}$-Neumann Problem on Regular Coordinate Domains.
    Jae-seong Cho*, Department of Mathematics, Purdue University
    (1047-32-270)
  • 9:30 a.m.
    Examples of sharp subelliptic estimates for the $\bar{\partial}-$Neumann problem.
    David W. Catlin*, Purdue University
    (1047-32-361)
  • 10:00 a.m.
    Bergman versus Szegö via conformal mapping.
    Kenneth D Koenig*, Ohio State University
    Loredana Lanzani, University of Arkansas
    (1047-30-143)
  • 10:30 a.m.
    Cauchy-Fantappié singular integrals for strongly pseudoconvex domains of class $C^2$.
    Loredana Lanzani*, University of Arkansas
    Elias M. Stein, Princeton University
    (1047-32-243)
  • 11:00 a.m.
    Duality between Hardy spaces on dual domains in complex projective space.
    David E Barrett*, University of Michigan
    (1047-32-363)
• Saturday March 28, 2009, 9:30 a.m.-11:20 a.m.
  Special Session on Topological Dynamics and Ergodic Theory, II
  Room 345, Altgeld Hall
  Organizers:
  Alica Miller, University of Louisville amiller@erdos.math.louisville.edu
  Joseph Rosenblatt, University of Illinois at Urbana-Champaign rosnbltt@math.uiuc.edu
  

  • 9:30 a.m.
    Measure preserving actions of WM groups and Hindman's theorem.
    Vitaly Bergelson*, Ohio State University
    (1047-37-275)
  • 10:30 a.m.
    What does Birkhoff's Ergodic Theorem mean for a big finite set?
    Lev Glebsky, Independent University of San Luis Potosi, Mexico
    Evgeny I Gordon*, Eastern Illinois University
    C Ward Henson, University of Illinois at Urbana - Champaign
    (1047-37-197)
  • 11:00 a.m.
    Determining transformations by averaging methods.
    Joseph Rosenbaltt*, University of Illinois at Urbana-Champaign
    (1047-28-112)
• Saturday March 28, 2009, 11:40 a.m.-12:30 p.m.
  Invited Address
  Complex interpolation between Hilbert, Banach and operator spaces.
  Room 314, Altgeld Hall
  Gilles Pisier*, Texas A&M University
  (1047-00-02)
• Saturday March 28, 2009, 2:00 p.m.-2:50 p.m.
  Invited Address
  On the classification of topological field theories.
  Room 314, Altgeld Hall
  Jacob Lurie*, Massachusetts Institute of Technology
  (1047-55-03)
• Saturday March 28, 2009, 3:00 p.m.-5:50 p.m.
  Special Session on Algebra, Geometry and Combinatorics, II
  Room 217, Noyes Lab
  Organizers:
  Rinat Kedem, University of Illinois at Urbana-Champaign rinat@uiuc.edu
  Alexander T. Yong, University of Illinois at Urbana-Champaign ayong@uiuc.edu
  

  • 3:00 p.m.
    The geometry and combinatorics of some special subvarieties of the flag variety.
    Julianna Tymoczko*, University of Iowa
    (1047-14-470)
  • 3:30 p.m.
    Cluster fans for quivers.
    Calin Ioan Chindris*, University of Iowa
    (1047-16-177)
  • 4:00 p.m.
    Poisson Geometry of Directed Networks.
    Michael Gekhtman*, University of Notre Dame
    Michael Shapiro, Michigan State University
    Alek Vainshtein, University of Haifa
    (1047-05-181)
  • 4:30 p.m.
    Higher Auslander algebras, cyclic polytopes, and analogues of tropical cluster algebras.
    Steffen Oppermann, Norges teknisk-naturvitenskapelige universitet
    Hugh Thomas*, University of New Brunswick
    (1047-16-384)
  • 5:00 p.m.
    Positivity results for cluster algebras.
    Gregg Musiker, MIT
    Ralf Schiffler, University of Connecticut
    Lauren Williams*, Harvard University
    (1047-05-412)
  • 5:30 p.m.
    Q-systems and Cluster Positivity.
    Philippe R Di Francesco*, Institut de Physique Theorique, CEA Saclay, France
    (1047-05-267)
• Saturday March 28, 2009, 3:00 p.m.-4:45 p.m.
  Special Session on Topological Field Theories, Representation Theory, and Algebraic Geometry, III
  Room 347, Altgeld Hall
  Organizers:
  Thomas Nevins, University of Illinois at Urbana-Champaign nevins@uiuc.edu
  David Ben-Zvi, University of Texas at Austin benzvi@math.utexas.edu
  

  • 3:00 p.m.
    BPS invariants of Calabi-Yau threefolds.
    Sheldon H Katz*, University of Illinois
    (1047-14-483)
  • 4:00 p.m.
    On GW/DT correspondence with descendants.
    Alexei Oblomkov*, Princeton
    Andrei Okounkov, Princeton
    (1047-14-323)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Local and Homological Methods in Commutative Algebra, III
  Room 165, Noyes Lab
  Organizers:
  Florian Enescu, Georgia State University fenescu@gsu.edu
  Sandra Spiroff, University of Mississippi spiroff@olemiss.edu
  

  • 3:00 p.m.
    Arithmetically Cohen-Macaulay bundles on hypersurfaces.
    Mohan N Kumar*, Washington University in Saint Louis
    (1047-14-82)
  • 3:30 p.m.
    Free summands of syzygies and Cohen-Macaulay rings.
    Bart Snapp*, Coastal Carolina University
    (1047-13-123)
  • 4:00 p.m.
    On the Strong Direct Summand Conjecture.
    Jason McCullough*, University of Illinois at Urbana-Champaign
    (1047-13-179)
  • 4:30 p.m.
    Real affine varieties and obstruction theories.
    Satya Mandal*, University of Kansas
    Albert Sheu, University of Kansas
    (1047-13-83)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Number Theory in the Spirit of Erdos, III
  Room 143, Altgeld Hall
  Organizers:
  Kevin Ford, University of Illinois at Urbana-Champaign ford@math.uiuc.edu
  A. J. Hildebrand, University of Illinois at Urbana-Champaign hildebr@math.uiuc.edu
  

  • 3:00 p.m.
    Open Problems on Covering Systems.
    Michael Filaseta*, University of South Carolina
    (1047-11-286)
  • 3:30 p.m.
    Covering systems old and new.
    Pace P. Nielsen*, The University of Iowa
    (1047-11-359)
  • 4:00 p.m.
    On sequences of integers no one of which divides the product of three others.
    Tsz Ho Chan*, University of Memphis
    Ervin Gyory, Renyi Institute
    Andras Sarkozy, Eotvos Lorand University
    (1047-11-46)
  • 4:30 p.m.
    Sets with Integral Distance in Finite Fields.
    Alex Iosevich, University of Missouri, Columbia, MO
    Igor Shparlinski, Dept. Computing, Macquarie University, Sydney, Australia
    Maosheng Xiong*, Pennsylvania State University
    (1047-11-257)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Time, Scale and Frequency Methods in Harmonic Analysis, III
  Room 141, Altgeld Hall
  Organizers:
  Richard S. Laugesen, University of Illinois at Urbana-Champaign Laugesen@illinois.edu
  Darrin M. Speegle, St. Louis University speegled@slu.edu
  

  • 3:00 p.m.
    Frequency-scale frames and the solution of the Mexican hat problem.
    H.-Q. Bui, University of Canterbury
    R. S. Laugesen*, University of Illinois, Urbana-Champaign
    (1047-42-277)
  • 3:30 p.m.
    Discussion
  • 4:00 p.m.
    Exponential decay of dispersion managed solitons.
    M. Burak Erdogan*, University of Illinois Urbana Champaign
    Dirk Hundermark, University of Illinois Urbana Champaign
    Young-Ran Lee, Sogang University
    (1047-35-347)
  • 4:30 p.m.
    Center-stable manifolds for orbitally unstable evolution equations.
    Wilhelm Schlag*, University of Chicago
    (1047-35-332)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Differential Geometry and Its Applications, III
  Room 341, Altgeld Hall
  Organizers:
  Stephanie B. Alexander, University of Illinois at Urbana-Champaign stephanieb.alexander@gmail.com
  Jianguo Cao, University of Notre Dame cao.7@nd.edu
  

  • 3:00 p.m.
    On uniqueness and non-uniqueness of souls.
    Igor Belegradek*, Georgia Tech
    Slawomir Kwasik, Tulane University
    Reinhard Schultz, University of California, Riverside
    (1047-53-67)
  • 3:30 p.m.
    A New Convergence for Riemannian Manifolds.
    Christina Sormani*, Lehman College and CUNY Graduate Center
    Stefan Wenger, University of Illinois at Chicago
    (1047-58-133)
  • 4:00 p.m.
    Convexity in sub-Riemannian Geometry and Its Applications.
    Kanghai Tan*, Science School, Nanjing University of Science & Technology
    (1047-53-352)
  • 4:30 p.m.
    Rigidity of conformally compact manifolds with the round sphere as the conformal infinity.
    Satyaki Dutta, N/A
    Mohammad Javaheri*, Trinity College
    (1047-53-80)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on The Interface Between Number Theory and Dynamical Systems, III
  Room 245, Altgeld Hall
  Organizers:
  Florin Boca, University of Illinois at Urbana-Champaign fboca@math.uiuc.edu
  Jeffrey Lagarias, University of Michigan lagarias@umich.edu
  Kenneth Stolarsky, University of Illinois at Urbana-Champaign stolarsk@math.uiuc.edu
  

  • 3:00 p.m.
    Polynomial extensions of Szemeredi's theorem on arithmetic progressions and ergodic theory.
    Vitaly Bergelson*, Ohio State University
    (1047-11-284)
  • 4:00 p.m.
    Hardy field configurations on dense subsets of the integers.
    Nikos Frantzikinakis*, University of Memphis
    (1047-37-439)
  • 4:30 p.m.
    The Multiplication-Convolution Dynamical System.
    Machiel van Frankenhuijsen*, Utah Valley University
    (1047-11-81)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Hyperbolic Geometry and Teichmuller Theory, III
  Room 443, Altgeld Hall
  Organizers:
  Jason Deblois, University of Illinois at Chicago jdelbois@math.uic.edu
  Richard P. Kent, IV, Brown University rpkfour@gmail.com
  Christopher J. Leininger, University of Illinois at Urbana-Champaign clein@math.uiuc.edu
  

  • 3:00 p.m.
    The Local Topology of Deformation Spaces of Kleinian Surface Groups.
    Aaron D Magid*, University of Michigan
    (1047-57-72)
  • 3:30 p.m.
    Perturbed, Genus One Scherk Surfaces and Their Limits.
    Casey Douglas*, Rice University
    (1047-53-95)
  • 4:00 p.m.
    Uniform uniform exponential growth of subgroups of the mapping class group.
    Johanna Mangahas*, University of Michigan Ann Arbor
    (1047-51-91)
  • 4:30 p.m.
    Asymptotics for pseudo-Anosovs in the Teichmüller lattice.
    Joseph Maher*, Oklahoma State
    (1047-57-30)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Topological Dynamics and Ergodic Theory, III
  Room 345, Altgeld Hall
  Organizers:
  Alica Miller, University of Louisville amiller@erdos.math.louisville.edu
  Joseph Rosenblatt, University of Illinois at Urbana-Champaign rosnbltt@math.uiuc.edu
  

  • 3:00 p.m.
    Some properties of the full groups of measure-preserving equivalence relations.
    Vladimir Pestov*, University of Ottawa
    (1047-37-462)
  • 3:30 p.m.
    Fractals a la Furstenberg and Gromov.
    Ethan Akin*, The City College of New York (CCNY)
    (1047-37-301)
  • 4:00 p.m.
    Simple discrete 3D stirring models.
    Judy Anita Kennedy*, Lamar University
    Barry Peratt, Winona State University
    (1047-37-345)
  • 4:30 p.m.
    A variational principle for subset.
    Wen Huang*, University of Science and Technology of China
    (1047-37-342)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on q-Series and Partitions, III
  Room 147, Altgeld Hall
  Organizers:
  Bruce Berndt, University of Illinois at Urbana-Champaign berndt@math.uiuc.edu
  Ae Ja Yee, Pennsylvania State University yee@math.psu.edu
  

  • 3:00 p.m.
    Sums of squares, Schur functions, and multiple basic hypergeometric series.
    Stephen C. Milne*, The Ohio State University
    (1047-11-432)
  • 3:30 p.m.
    General WP-Bailey Chains.
    Jimmy Mc Laughlin*, West Chester University
    Peter Zimmer, West Chester University
    (1047-33-86)
  • 4:00 p.m.
    A Multiple Weak Bailey Lemma and Some Applications.
    Hasan Coskun*, Texas A&M University-Commerce
    (1047-05-474)
  • 4:30 p.m.
    A Combinatorial Interpretation of a General Case of a Fine Identity.
    Michael J Rowell*, Pacific University
    (1047-05-117)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Concrete Aspects of Real Positive Polynomials, III
  Room 162, Noyes Lab
  Organizers:
  Victoria Powers, Emory University vicki@mathcs.emory.edu
  Bruce Reznick, University of Illinois at Urbana-Champaign reznick@illinois.edu
  

  • 3:00 p.m.
    Exact certification in global polynomial optimization via sums-of-squares of rational functions with rational coefficients.
    Erich Kaltofen*, North Carolina State University
    Bin Li, Key Lab. of Math. Mechanization, AMSS, Beijing 100190, China
    Zhengfeng Yang, Shanghai Key Lab. of Trustworthy Comput., SEI, East China Normal University, Shanghai 200062, China
    Lihong Zhi, Key Lab. of Math. Mechanization, AMSS, Beijing 100190, China
    (1047-12-76)
  • 3:30 p.m.
    Polynomial hierarchy, Betti numbers and a real analogue of Toda's theorem.
    Saugata Basu*, Department of Mathematics, Purdue University
    Thierry Zell, Department of Mathematics and Computing Sciences, Lenoir-Rhyne University
    (1047-14-400)
  • 4:00 p.m.
    Amoebas and coamoebas, relationships and similarities.
    Mounir Nisse*, University Pierre et Marie Curie - Paris 6, IMJ (UMR 7586)
    (1047-14-77)
  • 4:30 p.m.
    Positivity properties of Schoenberg's quadratic forms - a recurrent theme.
    Kenneth B Stolarsky*, University of Illinois
    (1047-12-162)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Nonlinear Partial Differential Equations and Applications, II
  room 241, Altgeld Hall
  Organizers:
  Igor Kukavica, University of Southern California kukavica@usc.edu
  Anna L. Mazzucato, Pennsylvania State University mazzucat@math.psu.edu
  

  • 3:00 p.m.
    Nonlinear instability for the critically disipative quasi-geostrophic equation.
    Susan Friedlander*, University of Southern California
    Natasa Pavlovic, U of Texas-Austin
    Vlad Vicol, University of Southern California
    (1047-76-140)
  • 3:30 p.m.
    Vanishing viscosity and the accumulation of vorticity on the boundary.
    James P Kelliher*, University of California, Riverside
    (1047-76-404)
  • 4:00 p.m.
    Strong Solutions to a Nonlinear Fluid Structure Interaction System.
    Amjad Tuffaha*, University of Southern California
    Igor Kukavica, University of Southern California
    Mohammed Ziane, University of Southern California
    (1047-35-469)
  • 4:30 p.m.
    El Nino Southern Oscillation as Sporadic Oscillations between Metastable States.
    Tian Ma, Sichuan University
    Shouhong Wang*, Indiana University
    (1047-35-113)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on The Logic and Combinatorics of Algebraic Structures, III
  Room 203, Noyes Lab
  Organizers:
  John Snow, Concordia University john.snow@cune.edu
  Jeremy Alm, Illinois College alm.academic@gmail.com
  

  • 3:00 p.m.
    The complexity of pp-definability.
    Ross Willard*, University of Waterloo
    (1047-03-158)
  • 3:30 p.m.
    Algebraic conditions forcing NP-completeness of the Constraint Satisfaction Problem.
    Petar Markovic*, University of Novi Sad, Serbia
    Ralph McKenzie, Vanderbilt University
    Matthew Nickodemus, Vanderbilt University
    (1047-08-304)
  • 4:00 p.m.
    Algebras of Bounded Width.
    Petar Markovic, University of Novi Sad
    Ralph McKenzie, Vanderbilt University
    Matthew Nickodemus*, Vanderbilt University
    (1047-03-395)
  • 4:30 p.m.
    Algebra applied to the study of constraint satisfaction problems produces spectacular results both in universal algebra and on the side of computational complexity: a survey of recent work.
    Ralph N McKenzie*, Vanderbilt University
    Petar Markovic, Vanderbilt University
    Matthew Nickodemus, Vanderbilt University
    (1047-08-153)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Geometric Group Theory, III
  Room 445, Altgeld Hall
  Organizers:
  Sergei V. Ivanov, University of Illinois at Urbana-Champaign ivanov@math.uiuc.edu
  Ilya Kapovich, University of Illinois at Urbana-Champaign kapovich@math.uiuc.edu
  Igor Mineyev, University of Illinois at Urbana-Champaign mineyev@math.uiuc.edu
  Paul E. Schupp, University of Illinois at Urbana-Champaign schupp@math.uiuc.edu
  

  • 3:00 p.m.
    Characterizing the solvability of the conjugacy problem in free-by-free and [free abelian]-by-free groups.
    Enric Ventura*, Universitat Politecnica Catalunya
    (1047-20-435)
  • 4:00 p.m.
    Growth in Baumslag-Solitar groups: Asymptotics.
    Eric M Freden*, Southern Utah University
    Jared Adams, Southern Utah University
    (1047-20-364)
  • 4:30 p.m.
    Generalized expanders.
    Lucas Sabalka*, Binghamton University
    Jerry Kaminker, University of California, Davis
    (1047-54-420)
• Saturday March 28, 2009, 3:00 p.m.-4:55 p.m.
  Special Session on Algebraic Methods in Statistics and Probability, III
  Room 204, Noyes Lab
  Organizers:
  Marlos A. G. Viana, University of Illinois at Chicago viana@uic.edu
  

  • 3:00 p.m.
    Alternative parametrizations and reference priors for decomposable discrete graphical models.
    Helene M Massam*, York University, Toronto, Canada
    (1047-62-24)
  • 3:30 p.m.
    Qualitative inequalities for squared partial correlations of a Gaussian random vector.
    Sanjay Chaudhuri*, Department of Statistics and Applied Probability, National University of Singapore
    (1047-62-203)
  • 4:00 p.m.
    Trek separation for Gaussian graphical models.
    Seth Sullivant*, North Carolina State University
    Kelli Talaska, University of Michigan
    (1047-62-49)
  • 4:30 p.m.
    Algebraic statistics of p1 random graph models.
    Stephen Fienberg, Carnegie Mellon University
    Sonja Petrović*, Univeristy of Illinois at Chicago
    Alessandro Rinaldo, Carnegie Mellon University
    (1047-13-163)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Graph Theory, III
  Room 161, Noyes Lab
  Organizers:
  Alexander V. Kostochka, University of Illinois at Urbana-Champaign kostochk@math.uiuc.edu
  Douglas B. West, University of Illinois at Urbana-Champaign west@math.uiuc.edu
  

  • 3:00 p.m.
    Maximal Independent Sets in Adjacent Levels of the Cube.
    Dwight Duffus*, Mathematics & Computer Science Department, Emory University
    Peter Frankl, Tokyo, Japan
    Vojtech Rodl, Mathematics & Computer Science Department, Emory University
    (1047-05-312)
  • 3:30 p.m.
    Partitioning Subset Lattices into Intervals.
    William T. Trotter*, Georgia Institute of Technology
    (1047-05-263)
  • 4:00 p.m.
    Diamond-free families of subsets.
    Jerrold R. Griggs*, University of South Carolina
    (1047-05-456)
  • 4:30 p.m.
    On the degree of regularity of a specific linear equation.
    André E. Kézdy*, University of Louisville
    Hunter Snevily, University of Idaho at Moscow
    (1047-05-292)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Probabilistic and Extremal Combinatorics, III
  Room 163, Noyes Lab
  Organizers:
  Jozsef Balogh, University of Illinois at Urbana-Champaign jobal@math.uiuc.edu
  Zoltan Furedi, University of Illinois at Urbana-Champaign z-furedi@math.uiuc.edu
  

  • 3:00 p.m.
    It's a long way to recurrence - an extremal problem in the Abelian Sandpile Model.
    László Babai*, University of Chicago
    Igor Gorodezky, Cornell University
    Allie Shapiro, Toyota Technological Institute - Chicago
    (1047-05-434)
  • 3:30 p.m.
    Random Erdos-Ko-Rado.
    Jozsef Balogh, UIUC
    Tom Bohman, CMU
    Dhruv Mubayi*, University of Illinois at Chicago
    (1047-05-118)
  • 4:00 p.m.
    New bounds in the Zarankiewicz problem.
    Vladimir Nikiforov*, University of Memphis, Memphis, TN
    (1047-05-318)
  • 4:30 p.m.
    Large induced trees in $K_r$-free graphs.
    Jacob Fox, Princeton University
    Po-Shen Loh*, Princeton University
    Benny Sudakov, UCLA
    (1047-05-96)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Geometric Function Theory and Analysis on Metric Spaces, III
  Room 447, Altgeld Hall
  Organizers:
  Sergiy Merenkov, University of Illinois at Urbana-Champaign merenkov@uiuc.edu
  Jeremy Taylor Tyson, University of Illinois at Urbana-Champaign tyson@math.uiuc.edu
  Jang-Mei Wu, University of Illinois at Urbana-Champaign wu@math.uiuc.edu
  

  • 3:00 p.m.
    On invertibility of Sobolev mappings.
    Leonid V. Kovalev*, Syracuse University
    Jani Onninen, Syracuse University
    (1047-30-90)
  • 3:30 p.m.
    Some remarks on p harmonic measure.
    John L Lewis*, University of Kentucky
    (1047-35-119)
  • 4:00 p.m.
    A variant of Schwarz lemma for meromorphic functions and estimates for the hyperbolic metric.
    Alexander Yu. Solynin*, Texas Tech University
    (1047-30-482)
  • 4:30 p.m.
    Explicit Wild Reflections.
    David H Hamilton*, UMCP
    (1047-58-138)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Mathematical Visualization, III
  Room 102, Altgeld Hall
  Organizers:
  George K. Francis, University of Illinois at Urbana-Champaign gfrancis@uiuc.edu
  Louis H. Kauffman, University of Illinois at Chicago kauffman@uic.edu
  Dennis Martin Roseman, University of Iowa roseman@math.uiowa.edu
  Andrew J. Hanson, Indiana University hanson@cs.indiana.edu
  

  • 3:00 p.m.
    Mathematical Modelling and Visualization with Mathematica.
    Ulises Cervantes-Pimentel*, Wolfram Research, Inc
    (1047-51-168)
  • 3:30 p.m.
    Visualizing Pseudo-Spherical Cone Points.
    Ivan C Sterling*, St Mary's College of Maryland
    Josef Dorfmeister, Technical University Munich
    Thomas Ivey, College of Charleston
    (1047-53-202)
  • 4:00 p.m.
    Visualization for the Endless Universe.
    Stewart P Dickson*, University of Illinois
    Paul J Steinhardt, Department of Physics, Princeton University
    (1047-51-139)
  • 4:30 p.m.
    Experiencing the Fourth Dimension.
    Andrew J. Hanson*, Computer Science Department, School of Informatics, Indiana University, Bloomington, IN 47405
    (1047-00-116)
• Saturday March 28, 2009, 3:00 p.m.-4:50 p.m.
  Special Session on Operator Algebras and Operator Spaces, III
  Room 145, Altgeld Hall
  Organizers:
  Zhong-Jin Ruan, University of Illinois at Urbana-Champaign ruan@math.uiuc.edu
  Florin P. Boca, University of Illinois at Urbana-Champaign fboca@math.uiuc.edu
  Marius Junge, University of Illinois at Urbana-Champaign junge@math.uiuc.edu
  

  • 3:00 p.m.
    Group representations and $R$-boundedness.
    Christian Le Merdy*, University of Besancon, France
    (1047-47-258)
  • 3:30 p.m.
    Transference of multipliers.
    Eric Ricard*, Université de Franche-Comté
    (1047-46-290)
  • 4:00 p.m.
    Littlewood-Paley inequalities for operator-valued functions.
    Tao Mei*, Univ. of Illinois at Urbana-Champaign
    Javier Parcet, Instituto de Ciencias Matemáticas, Spain
    (1047-46-423)
  • 4:30 p.m.
    An operator space with "few" subspaces (joint work with C.Rosendal).
    Timur Oikhberg*, University of California - Irvine and UIUC
    Christian Rosendal, University of Illinois - Chicago
    (1047-46-393)
• Saturday March 28, 2009, 3:00 p.m.-4:55 p.m.
  Special Session on Holomorphic and CR Mappings, III
  Room 343, Altgeld Hall
  Organizers:
  John P. D'Angelo, University of Illinois at Urbana-Champaign jpda@math.uiuc.edu
  Jiri Lebl, University of Illinois at Urbana-Champaign jlebl@math.uiuc.edu
  Alex Tumanov, University of Illinois at Urbana-Champaign tumanov@math.uiuc.edu
  

  • 3:00 p.m.
    Compactness and $\mathcal{L}^{2}_{loc}$-hypoellipticity for $\overline{\partial}$.
    Emil J. Straube*, Department of Mathematics, Texas A&M University
    (1047-32-166)
  • 3:30 p.m.
    An $L^2$ extension problem for affine algebraic varieties.
    Dror Varolin*, Stony Brook University
    (1047-32-487)
  • 4:00 p.m.
    Compactness of the Complex Green Operator on CR Manifolds of Hypersurface Type.
    Andrew Raich*, University of Arkansas
    (1047-32-79)
  • 4:30 p.m.
    Rigidity results in CR geometry.
    Peter Ebenfelt*, UCSD
    Salah Baouendi, UCSD
    Xiaojun Huang, Rutgers
    Dmitry Zaitsev, Trinity College, Dublin
    (1047-32-490)
• Saturday March 28, 2009, 5:10 p.m.-6:00 p.m.
  Erdős Memorial Lecture
  From Apollonian circle packings to Fibonacci Numbers.
  Room 314, Altgeld Hall
  Jeffrey C. Lagarias*, University of Michigan
  (1047-11-04)
• Saturday March 28, 2009, 6:15 p.m.-8:00 p.m.
  Reception hosted by the UIUC Department of Mathematics
  South Lounge, Illini Union

Sunday March 29, 2009

• Sunday March 29, 2009, 8:00 a.m.-10:50 a.m.
  Special Session on Algebra, Geometry and Combinatorics, III
  Room 217, Noyes Lab
  Organizers:
  Rinat Kedem, University of Illinois at Urbana-Champaign rinat@uiuc.edu
  Alexander T. Yong, University of Illinois at Urbana-Champaign ayong@uiuc.edu
  

  • 8:00 a.m.
    Fusion rings over finite fields.
    Terry Gannon*, Math Dept, U of Alberta
    (1047-13-475)
  • 8:30 a.m.
    Representations of double affine Lie algebras and finite groups.
    Nicolas Guay*, University of Alberta
    (1047-17-63)
  • 9:00 a.m.
    Total positivity in loop groups I: whirls and curls.
    Pavlo Pylyavskyy*, University of Michigan
    Thomas Lam, Harvard
    (1047-05-313)
  • 9:30 a.m.
    The shifted plactic monoid.
    Luis G Serrano*, University of Michigan
    (1047-05-97)
  • 10:00 a.m.
    Bruhat order, smooth Schubert varieties, and hyperplane arrangements.
    SuHo Oh*, Massachusetts Institute of Technology
    Alexander Postnikov, Massachusetts Institute of Technology
    Hwanchul Yoo, Massachusetts Institute of Technology
    (1047-05-407)
  • 10:30 a.m.
    Presenting the cohomology of a Schubert variety.
    Victor Reiner, University of Minnesota - Twin Cities
    Alexander Woo*, Saint Olaf College
    Alexander Yong, University of Illinois - Urbana-Champaign
    (1047-05-280)
• Sunday March 29, 2009, 8:00 a.m.-12:30 p.m.
  Special Session on Nonlinear Partial Differential Equations and Applications, III
  room 241, Altgeld Hall
  Organizers:
  Igor Kukavica, University of Southern California kukavica@usc.edu
  Anna L. Mazzucato, Pennsylvania State University mazzucat@math.psu.edu
  

  • 8:00 a.m.
    Stability of Periodic Traveling Wave Solutions of the Generalized Korteweg-de Vries Equation.
    Mathew A. Johnson*, University of Illinois at Urbana-Champaign
    Jared C. Bronski, University of Illinois at Urbana Champaign
    (1047-35-269)
  • 8:30 a.m.
    $C^*$-algebra approach to spectral problems arising in hydrodynamics.
    Roman Shvydkoy*, University of Illinois at Chicago
    (1047-76-488)
  • 9:00 a.m.
    Behavior of solutions to the Navier-Stokes equations in the scaling invariant spaces.
    Jean Bourgain, Institute for Advanced Study
    Pierre Germain, Courant Institute of Mathematical Sciences
    Natasa Pavlovic*, University of Texas at Austin
    Gigliola Staffilani, Massachusetts Institute of Technology
    (1047-35-132)
  • 9:30 a.m.
    Defect Eigenvalues and Diophantine Approximation.
    Jared C Bronski*, University of Illinois
    Zoi Rapti, University of Illinois
    (1047-81-447)
  • 10:00 a.m.
    On a relation between Lyapunov exponents and the radius of analyticity.
    A Cheskidov, University of Illinois, Chicago
    M S Jolly*, Indiana University
    E S Van Vleck, University of Kansas
    (1047-35-413)
  • 10:30 a.m.
    Traveling fronts in disordered media.
    Andrej Zlatos*, University of Chicago
    (1047-35-336)
  • 11:00 a.m.
    New Well-Posedness Results for the Equations of Stochastic Fluid Dynamics with Multiplicative Noise.
    Nathan E. Glatt-Holtz*, Indiana University
    (1047-35-443)
  • 11:30 a.m.
    The zero mode for the Primitive Equations.
    Qingshan Chen*, Indiana University Bloomington
    Ming-Cheng Shiue, Indiana University Bloomington
    Roger Temam, Indiana University Bloomington
    (1047-35-485)
  • 12:00 p.m.
    Discussion
• Sunday March 29, 2009, 8:30 a.m.-12:50 p.m.
  Special Session on Geometric Function Theory and Analysis on Metric Spaces, IV
  Room 447, Altgeld Hall
  Organizers:
  Sergiy Merenkov, University of Illinois at Urbana-Champaign merenkov@uiuc.edu
  Jeremy Taylor Tyson, University of Illinois at Urbana-Champaign tyson@math.uiuc.edu
  Jang-Mei Wu, University of Illinois at Urbana-Champaign wu@math.uiuc.edu
  

  • 8:30 a.m.
    Astala's conjecture on Hausdorff measure distortion under planar quasiconformal mappings.
    Michael T. Lacey, Georgia Institute of Technology
    Eric T. Sawyer, McMaster University
    Ignacio Uriarte-Tuero*, Michigan State University ; Centre de Recerca Matemàtica (Barcelona, Spain)
    (1047-30-249)
  • 9:00 a.m.
    Circle-like homeomorphisms and homogeneity at a point.
    Melkana A Brakalova*, Fordham University
    (1047-30-297)
  • 9:30 a.m.
    Rigidity of Derivations on the Plane and Applications.
    Jasun Gong*, University of Pittsburgh
    (1047-28-411)
  • 10:00 a.m.
    Comparison of BV Norms in Weighted Euclidean Spaces.
    Chris Camfield*, Kenyon College
    (1047-28-425)
  • 10:30 a.m.
    Break
  • 11:00 a.m.
    Towards Uniform Rectifiability in a metric space setting.
    Raanan Schul*, UCLA
    (1047-28-240)
  • 11:30 a.m.
    On the dimension of measures.
    Anna Vershynina*, University of California Davis
    Qinglan Xia, University of California Davis
    (1047-28-75)
  • 12:00 p.m.
    p-Harmonic measure in simply connected domains.
    John Lewis, Department of Mathematics, University of Kentucky
    Kaj Nyström, Department of Mathematics, Umea University
    Pietro Poggi-Corradini*, Department of Mathematics, Kansas State University
    (1047-35-68)
  • 12:30 p.m.
    An Asymptotic Mean Value Characterization for p-harmonic functions.
    Juan J Manfredi*, University of Pittsburgh
    Mikko Parviainen, Helsinki University of Technology
    Julio D Rossi, University of Buenos Aires/ Universidad Autonoma de Madrid
    (1047-35-136)
• Sunday March 29, 2009, 9:00 a.m.-11:20 a.m.
  Special Session on Complex Dynamics and Value Distribution, III
  Room 441, Altgeld Hall
  Organizers:
  Aimo Hinkkanen, University of Illinois at Urbana-Champaign aimo@uiuc.edu
  Joseph B. Miles, University of Illinois at Urbana-Champaign joe@math.uiuc.edu
  

  • 9:00 a.m.
    Univalence Criteria, Quasiconformal Mappings and Approximable Quasidisks.
    Ngin-Tee Koh*, University of Illinois at Urbana-Champaign
    (1047-30-144)
  • 9:30 a.m.
    Pinching Deformations of Rational Maps.
    Robert W O'Connell*, Indiana University-Bloomington
    (1047-37-26)
  • 10:00 a.m.
    Julia (Limit) Sets in Curves.
    David H Hamilton*, UMCP
    (1047-30-137)
  • 10:30 a.m.
    Asymptotic distribution of eigenvalues of non-self-adjoint Schrödinger operators with polynomial potentials.
    Kwang C. Shin*, University of West Georgia
    (1047-41-38)
  • 11:00 a.m.
    Entire functions of the class $\mathcal{S}$ of irregular growth.
    David Drasin*, Department of Mathematics, Purdue University, West Lafayette, IN 47907-2067
    (1047-30-326)
• Sunday March 29, 2009, 9:00 a.m.-11:45 a.m.
  Special Session on Topological Field Theories, Representation Theory, and Algebraic Geometry, IV
  Room 347, Altgeld Hall
  Organizers:
  Thomas Nevins, University of Illinois at Urbana-Champaign nevins@uiuc.edu
  David Ben-Zvi, University of Texas at Austin benzvi@math.utexas.edu
  

  • 9:00 a.m.
    Localization for singular weights and finite W-algebras.
    Kobi Kremnizer*, University of Chicago
    (1047-22-303)
  • 10:00 a.m.
    The 2-Lien of a 2-Gerbe.
    Prabhu Venkataraman*, Eureka College
    (1047-14-254)
  • 11:00 a.m.
    Twisted Umkehr maps.
    Matthew Ando*, University of Illinois at Urbana-Champaign
    Andrew Blumberg, Stanford University
    David Gepner, University of Illinois at Chicago
    Hisham Sati, Yale University
    (1047-55-175)
• Sunday March 29, 2009, 9:00 a.m.-12:20 p.m.
  Special Session on Local and Homological Methods in Commutative Algebra, IV
  Room 165, Noyes Lab
  Organizers:
  Florian Enescu, Georgia State University fenescu@gsu.edu
  Sandra Spiroff, University of Mississippi spiroff@olemiss.edu
  

  • 9:00 a.m.
    A numerical criterion for tight closure of arbitrary ideals.
    Neil Epstein*, University of Michigan
    Yongwei Yao, Georgia State University
    (1047-13-442)
  • 9:30 a.m.
    On the discreteness and rationality of $F$-jumping coefficients.
    Mordechai Katzman, University of Sheffield, UK
    Gennady Lyubeznik*, University of Minnesota, USA
    Wenliang Zhang, University of Michigan, USA
    (1047-13-193)
  • 10:00 a.m.
    Discreteness and rationality of F-thresholds on rings with singularities.
    Karl E. Schwede*, University of Michigan
    Wenliang Zhang, University of Michigan
    (1047-13-161)
  • 10:30 a.m.
    Some observations on rigidity of Frobenius endomorphism.
    Jinjia Li*, Middle Tennessee State University
    (1047-13-380)
  • 11:00 a.m.
    Socle degrees, Resolutions, and Frobenius powers.
    Andrew R. Kustin*, University of South Carolina
    (1047-13-171)
  • 11:30 a.m.
    Concerning limit Hilbert-Kunz multiplicities.
    Holger Brenner, University of Osnabrueck
    Jinjia Li, Middle Tennessee State University
    Claudia Miller*, Syracuse University
    (1047-14-325)
  • 12:00 p.m.
    Uniform test exponents for rings of finite F-representation type.
    Yongwei Yao*, Georgia State University
    (1047-13-135)
• Sunday March 29, 2009, 9:00 a.m.-12:20 p.m.
  Special Session on Differential Geometry and Its Applications, IV
  Room 341, Altgeld Hall
  Organizers:
  Stephanie B. Alexander, University of Illinois at Urbana-Champaign stephanieb.alexander@gmail.com
  Jianguo Cao, University of Notre Dame cao.7@nd.edu
  

  • 9:00 a.m.
    Compactness for manifolds with bounded volume and diameter.
    Stefan Wenger*, University of Illinois at Chicago
    (1047-53-327)
  • 9:30 a.m.
    A new proof to Perelman's collapsing theorem for geometrization of 3-manifolds.
    J. Cao, University of Notre Dame
    Jian Ge*, University of Notre Dame
    (1047-53-128)
  • 10:00 a.m.
    Positive curvature and eigenfunctions of the Laplacian.
    Harold Gerard Donnelly*, Purdue University
    (1047-58-51)
  • 10:30 a.m.
    On nonnegatively curved low-dimensional fixed point homogeneous Riemannian manifolds.
    Fernando Galaz-Garcia*, University of Maryland, College Park
    (1047-53-120)
  • 11:00 a.m.
    Yau's Conjecture on holomorphic functions of polynomial growth.
    Bing-Long Chen, Zhongshan University, Guangzhou, P.R.C
    Xiao-Yong Fu*, Zhongshan University, Guangzhou, P.R.C
    Le Yin, Zhongshan University, Guangzhou, P.R.C
    Xi-Ping Zhu, Zhongshan University, Guangzhou, P.R.C
    (1047-53-186)
  • 11:30 a.m.
    Liouville-type Theorem in Alexandrov Spaces.
    Bobo Hua*, Fudan University, China
    (1047-58-305)
  • 12:00 p.m.
    Projectively Flat Metrics.
    Zhongmin Shen*, Indiana University-Purdue University at Indianapolis
    (1047-53-200)
• Sunday March 29, 2009, 9:00 a.m.-11:20 a.m.
  Special Session on q-Series and Partitions, IV
  Room 147, Altgeld Hall
  Organizers:
  Bruce Berndt, University of Illinois at Urbana-Champaign berndt@math.uiuc.edu
  Ae Ja Yee, Pennsylvania State University yee@math.psu.edu
  

  • 9:00 a.m.
    Branching rules and q-series.
    S. Ole Warnaar*, The University of Queensland, Australia
    (1047-33-340)
  • 9:30 a.m.
    The negative q-binomial.
    V. Reiner, School of Mathematics, University of Minnesota
    D. Stanton*, School of Mathematics, University of Minnesota
    (1047-05-376)
  • 10:00 a.m.
    The error term in Rademacher's formula for the partition function.
    Amanda Folsom*, University of Wisconsin, Madison
    Riad Masri, University of Wisconsin, Madison
    (1047-11-88)
  • 10:30 a.m.
    Bijective proofs for some partition identities involving parity.
    Sun Kim*, University of Illinois at Urbana-Champaign
    (1047-05-493)
  • 11:00 a.m.
    1 mod $k $ lecture hall partition.
    Jaebum Sohn*, Yonsei University
    Pyo Lim, Seoul
    (1047-11-362)
• Sunday March 29, 2009, 9:00 a.m.-12:20 p.m.
  Special Session on The Logic and Combinatorics of Algebraic Structures, IV
  Room 203, Noyes Lab
  Organizers:
  John Snow, Concordia University john.snow@cune.edu
  Jeremy Alm, Illinois College alm.academic@gmail.com
  

  • 9:00 a.m.
    A Stone-Type Duality for Meet Semilattices.
    Aditya K Nagrath*, University of Denver
    (1047-06-45)
  • 9:30 a.m.
    Observations about perfect lattices.
    Kira V Adaricheva*, Stern College for Women, Yeshiva University, New York
    (1047-06-306)
  • 10:00 a.m.
    Lattices of theories in languages without equality.
    J. B. Nation*, University of Hawaii
    Tristan Holmes, University of Hawaii
    Dayna Kitsuwa, University of Hawaii
    Sheri Tamagawa, Roosevelt High School
    (1047-06-268)
  • 10:30 a.m.
    Interpolation and Amalgamation for Ordered Algebraic Structures.
    George Metcalfe*, Vanderbilt University
    (1047-06-41)
  • 11:00 a.m.
    Subgroups of free idempotent-generated semigroups.
    John C. Meakin*, University of Nebraska-Lincoln
    (1047-20-189)
  • 11:30 a.m.
    Comparing the complexity of hyperequivalent operations.
    Jonathan D.H. Smith*, Department of Mathematics, Iowa State University
    (1047-08-146)
  • 12:00 p.m.
    Constrained Eden: Algebras in parallel.
    Steve Seif*, Mathematics Department, University of Louisville, Louisville, Kentucky 40292
    (1047-08-174)
• Sunday March 29, 2009, 9:00 a.m.-11:50 a.m.
  Special Session on Geometric Group Theory, IV
  Room 445, Altgeld Hall
  Organizers:
  Sergei V. Ivanov, University of Illinois at Urbana-Champaign ivanov@math.uiuc.edu
  Ilya Kapovich, University of Illinois at Urbana-Champaign kapovich@math.uiuc.edu
  Igor Mineyev, University of Illinois at Urbana-Champaign mineyev@math.uiuc.edu
  Paul E. Schupp, University of Illinois at Urbana-Champaign schupp@math.uiuc.edu
  

  • 9:00 a.m.
    Geometry of groups, random walks, and polynomial maps over finite fields.
    Mark Sapir*, Vanderbilt University
    (1047-20-238)
  • 10:00 a.m.
    Krull dimension for limit groups.
    Larsen E Louder*, University of Michigan
    (1047-20-392)
  • 10:30 a.m.
    Frobenius Problem and dead ends in integers.
    Zoran Sunic*, Texas A&M University
    (1047-20-429)
  • 11:00 a.m.
    Tame combings for groups.
    Sean Cleary, The City College of New York
    Susan Hermiller*, University of Nebraska
    Melanie Stein, Trinity College
    Jennifer Taback, Bowdoin College
    (1047-20-252)
  • 11:30 a.m.
    Some quotients of Coxeter groups.
    Tadeusz Januszkiewicz*, Ohio State University
    (1047-20-262)
• Sunday March 29, 2009, 9:00 a.m.-12:20 p.m.
  Special Session on Graph Theory, IV
  Room 161, Noyes Lab
  Organizers:
  Alexander V. Kostochka, University of Illinois at Urbana-Champaign kostochk@math.uiuc.edu
  Douglas B. West, University of Illinois at Urbana-Champaign west@math.uiuc.edu
  

  • 9:00 a.m.
    Cycle covers -- minimal contra pairs, Petersen chain and Hamilton weights.
    Cun-Quan Zhang*, West Virginia University
    (1047-05-190)
  • 9:30 a.m.
    Cyclable sets of vertices in 3-connected graphs.
    Hao Li*, CNRS and Universite Paris-sud 11, France
    Yan Zhu, Universite Paris-sud 11 and Shandong University
    (1047-05-281)
  • 10:00 a.m.
    On $s$-hamiltonian connected line graphs.
    Hong-Jian Lai*, West Virginia University
    Yanting Liang, West Virginia University
    Yehong Shao, Ohio University Southern
    (1047-05-213)
  • 10:30 a.m.
    On Even Square of Hamilton Cycles.
    Guantao Chen*, Georgia State University
    Katsuhiro Ota, Keio University
    Akita Saito, Nihon University
    Yi Zhao, Gorgia State University
    (1047-05-141)
  • 11:00 a.m.
    Symmetries of $(3,6)$-fullerenes.
    Mark Ellingham*, Vanderbilt University
    Xiaoya Zha, Middle Tennessee State University
    (1047-05-320)
  • 11:30 a.m.
    On the Chudnovsky, Seymour, and Sullivan's conjecture.
    Molly Dunkum, Department of Mathematics and Computer Science, Western Kentucky University
    Peter Hamburger*, Department of Mathematics and Computer Science, Western Kentucky University
    Attila P{ó}r, Department of Mathematics and Computer Science, Western Kentucky University
    (1047-05-129)
  • 12:00 p.m.
    Packing and covering tetrahedra.
    Penny Haxell*, University of Waterloo
    Subir Ghosh, Tata Institute of Fundamental Research
    (1047-05-354)
• Sunday March 29, 2009, 9:00 a.m.-12:20 p.m.
  Special Session on Probabilistic and Extremal Combinatorics, IV
  Room 163, Noyes Lab
  Organizers:
  Jozsef Balogh, University of Illinois at Urbana-Champaign jobal@math.uiuc.edu
  Zoltan Furedi, University of Illinois at Urbana-Champaign z-furedi@math.uiuc.edu
  

  • 9:00 a.m.
    On a Variant of van der Waerden's Theorem.
    Sujith Vijay*, University of Illinois at Urbana-Champaign
    (1047-05-365)
  • 9:30 a.m.
    Combinatorial problems from and for Horn formulas.
    Marina Langlois, Univ. of Illinois at Chicago, Dept. Comp. Sci.
    Dhruv Mubayi, Univ. of Illinois at Chicago, Dept. Math., Stat. and Comp.Sci.
    Robert H. Sloan, Univ. of Illinois at Chicago, Dept. Comp. Sci.
    Gyorgy Turan*, Univ. of Illinois at Chicago, Dept. Math., Stat. and Comp.Sci.
    (1047-05-278)
  • 10:00 a.m.
    Turán type problems and polychromatic colorings on the hypercube.
    David Offner*, Carnegie Mellon University
    (1047-05-366)
  • 10:30 a.m.
    Graphs with four boundary vertices and the Frame of a graph.
    Attila Por*, Western Kentucky University
    Tobias Muller, School of Mathematical Sciences, Sackler Faculty of Exact Sciences, Tel Aviv University
    Jean-Sebastian Sereni, CNRS (LIAFA, Universite Denis Diderot), Paris
    (1047-05-397)
  • 11:00 a.m.
    On colorings avoiding both monochromatic and rainbow subgraphs.
    Maria Axenovich*, Department of Mathematics, Iowa State University
    JiHyeok Choi, Iowa State University
    Perry Iverson, Iowa State University
    (1047-05-273)
  • 11:30 a.m.
    Diameter of random spanning trees in a given graph.
    Fan Chung, University of California, San Diego
    Paul Horn, University of California, San Diego
    Linyuan Lu*, University of South Carolina
    (1047-05-374)
  • 12:00 p.m.
    Thue-type games and highly nonrepetitive sequences.
    Wesley Pegden*, Department of Mathematics, Rutgers University (New Brunswick)
    (1047-05-39)
• Sunday March 29, 2009, 9:00 a.m.-12:25 p.m.
  Special Session on Holomorphic and CR Mappings, IV
  Room 343, Altgeld Hall
  Organizers:
  John P. D'Angelo, University of Illinois at Urbana-Champaign jpda@math.uiuc.edu
  Jiri Lebl, University of Illinois at Urbana-Champaign jlebl@math.uiuc.edu
  Alex Tumanov, University of Illinois at Urbana-Champaign tumanov@math.uiuc.edu
  

  • 9:00 a.m.
    CR functions on subanalytic hypersurfaces.
    Debraj Chakrabarti*, University of Notre Dame
    Rasul Shafikov, University of Western Ontario
    (1047-32-92)
  • 9:30 a.m.
    On the (non-)extendability of germs of CR functions.
    Anna Siano*, University of MIchigan
    (1047-32-472)
  • 10:00 a.m.
    Discussion
  • 10:30 a.m.
    Attracting Basins for Sequences of Uniformly Attracting Automorphisms.
    Han Peters*, Stony Brook University.
    (1047-32-358)
  • 11:00 a.m.
    Discussion
  • 11:30 a.m.
    Discussion
  • 12:00 p.m.
    Discussion
• Sunday March 29, 2009, 9:30 a.m.-11:50 a.m.
  Special Session on Topological Dynamics and Ergodic Theory, IV
  Room 345, Altgeld Hall
  Organizers:
  Alica Miller, University of Louisville amiller@erdos.math.louisville.edu
  Joseph Rosenblatt, University of Illinois at Urbana-Champaign rosnbltt@math.uiuc.edu
  

  • 9:30 a.m.
    The Eulerian adic dynamical system.
    Karl Petersen*, University of North Carolina at Chapel Hill
    Alexander Varchenko, University of North Carolina at Chapel Hill
    (1047-37-495)
  • 10:30 a.m.
    Endomorphisms of Certain Dynamical Systems.
    Jeanette Olli*, University of North Carolina at Chapel Hill
    (1047-37-184)
  • 11:00 a.m.
    Directional recurrence for non-singular actions of $\mathbb Z^d$.
    Aimee S. A. Johnson, Swarthmore College
    Daniel J Rudolph, Colorado State University
    Ayse A. Sahin*, DePaul University
    (1047-37-372)
  • 11:30 a.m.
    Generalized Gauss-type interval maps.
    Ilie Ugarcovici*, DePaul University
    (1047-37-388)
• Sunday March 29, 2009, 9:30 a.m.-11:50 a.m.
  Special Session on Operator Algebras and Operator Spaces, IV
  Room 145, Altgeld Hall
  Organizers:
  Zhong-Jin Ruan, University of Illinois at Urbana-Champaign ruan@math.uiuc.edu
  Florin P. Boca, University of Illinois at Urbana-Champaign fboca@math.uiuc.edu
  Marius Junge, University of Illinois at Urbana-Champaign junge@math.uiuc.edu
  

  • 9:30 a.m.
    Positive Cocycles over Noncommutative 2-Tori.
    Yi-Jun YAO*, Penn State University
    (1047-46-458)
  • 10:00 a.m.
    Structures of certain homogeneous Hilbertian operator spaces and applications.
    Quanhua Xu*, Universite de Franche-Comte; France
    (1047-46-377)
  • 10:30 a.m.
    Tilings, Modified Bellissard Algebra and $K$-theory.
    Semail Ulgen Yildirim*, Northwestern University
    (1047-19-69)
  • 11:00 a.m.
    Every transcendental operator has a non-trivial invariant subspace.
    Yun-Su Kim*, University of Toledo
    (1047-47-198)
  • 11:30 a.m.
    Discussion
• Sunday March 29, 2009, 10:00 a.m.-10:50 a.m.
  Special Session on Number Theory in the Spirit of Erdos, IV
  Room 143, Altgeld Hall
  Organizers:
  Kevin Ford, University of Illinois at Urbana-Champaign ford@math.uiuc.edu
  A. J. Hildebrand, University of Illinois at Urbana-Champaign hildebr@math.uiuc.edu
  

  • 10:00 a.m.
    Dense sets of integers without long arithmetic progressions.
    Kevin O'Bryant*, CUNY - Staten Island
    (1047-11-477)
  • 10:30 a.m.
    Generalized multiplication tables.
    Dimitris Koukoulopoulos*, University of Illinois at Urbana-Champaign
    (1047-11-455)
• Sunday March 29, 2009, 10:00 a.m.-12:20 p.m.
  Special Session on The Interface Between Number Theory and Dynamical Systems, IV
  Room 245, Altgeld Hall
  Organizers:
  Florin Boca, University of Illinois at Urbana-Champaign fboca@math.uiuc.edu
  Jeffrey Lagarias, University of Michigan lagarias@umich.edu
  Kenneth Stolarsky, University of Illinois at Urbana-Champaign stolarsk@math.uiuc.edu
  

  • 10:00 a.m.
    The Weyl chamber flow, sections, and speculations about reduction theory (preliminary report).
    Anatole Katok*, Penn State University
    (1047-37-446)
  • 11:00 a.m.
    Apollonian Circle Packings and Horospherical Flows on Hyperbolic 3-Manifolds.
    Alex V Kontorovich*, Brown University
    Hee Oh, Brown University
    (1047-11-61)
  • 11:30 a.m.
    Quasiperiodic motion for the pentagram map.
    Valentin Ovsienko, University Lyon 1
    Richard Schwartz, Brown University
    Sergei Tabachnikov*, Penn State
    (1047-37-204)
  • 12:00 p.m.
    The distribution of the free path length of the linear flow in a honeycomb.
    Florin P Boca*, University of Illinois Urbana-Champaign
    (1047-11-373)
• Sunday March 29, 2009, 10:00 a.m.-12:20 p.m.
  Special Session on Hyperbolic Geometry and Teichmuller Theory, IV
  Room 443, Altgeld Hall
  Organizers:
  Jason Deblois, University of Illinois at Chicago jdelbois@math.uic.edu
  Richard P. Kent, IV, Brown University rpkfour@gmail.com
  Christopher J. Leininger, University of Illinois at Urbana-Champaign clein@math.uiuc.edu
  

  • 10:00 a.m.
    Asymptotics of pseudo-Anosov dilatations.
    Chia-Yen Tsai*, University of Illinois at Urbana-Champaign
    (1047-53-160)
  • 10:30 a.m.
    Margulis numbers and trace fields.
    Peter B Shalen*, University of Illinois at Chicago
    (1047-53-294)
  • 11:00 a.m.
    Rigid conics and Teichmueller discs.
    Christopher Martin Judge*, Indiana University
    S. Allen Broughton, Rose-Hulman Institute of Technology
    (1047-57-94)
  • 11:30 a.m.
    Linear bound for the length of a conjugating element in the mapping class group.
    Jing Tao*, University of Illinois at Chicago
    (1047-51-302)
  • 12:00 p.m.
    A compactification for the space of singular Euclidean metrics on a surface.
    Kasra Rafi*, University of Chicago
    Moon Duchin, University of Michigan
    Christopher Leininger, UIUC
    (1047-51-172)
• Sunday March 29, 2009, 10:00 a.m.-10:55 a.m.
  Special Session on Algebraic Methods in Statistics and Probability, IV
  Room 204, Noyes Lab
  Organizers:
  Marlos A. G. Viana, University of Illinois at Chicago viana@uic.edu
  

  • 10:00 a.m.
    The Minimal Ideal of the Semigroup of Probability Measures on a Compact Semigroup with applications to Random Measures.
    Gregory Budzban*, Southern Illinois University Carbondale
    Goran Hognas, Abo Akademi
    (1047-60-74)
  • 10:30 a.m.
    Combinatorial Local-to-Global PCA and an Application to Statistical Analysis of the Human Auditory Evoked Response.
    Amir H Assadi*, University of Wisconsin - Madison
    Hesam Torabi Dashti, Tehran University
    Fatemeh Miri, Tehran University
    (1047-62-15)
• Sunday March 29, 2009, 12:00 p.m.-12:20 p.m.
  Special Session on Mathematical Visualization, IV
  Room 102, Altgeld Hall
  Organizers:
  George K. Francis, University of Illinois at Urbana-Champaign gfrancis@uiuc.edu
  Louis H. Kauffman, University of Illinois at Chicago kauffman@uic.edu
  Dennis Martin Roseman, University of Iowa roseman@math.uiowa.edu
  Andrew J. Hanson, Indiana University hanson@cs.indiana.edu
  

  • 12:00 p.m.
    Virtual Installations of Quasicrystalline Structures in 3-space.
    George Francis*, University of Illinois, Urbana-Champaign
    Tony Robbin, Gilboa, New York
    (1047-51-84)
• Sunday March 29, 2009, 3:00 p.m.-5:50 p.m.
  Special Session on Algebra, Geometry and Combinatorics, IV
  Room 217, Noyes Lab
  Organizers:
  Rinat Kedem, University of Illinois at Urbana-Champaign rinat@uiuc.edu
  Alexander T. Yong, University of Illinois at Urbana-Champaign ayong@uiuc.edu
  

  • 3:00 p.m.
    The shape of a pure O-sequence.
    Mats Boij, Royal Institute of Technology
    Juan C Migliore, University of Notre Dame
    Rosa M Miró-Roig, University of Barcelona
    Uwe Nagel*, University of Kentucky
    Fabrizio Zanello, Michigan Technological University
    (1047-13-476)
  • 3:30 p.m.
    Monomial ideals with interesting properties.
    Juan C. Migliore*, University of Notre Dame
    Rosa Miro-Roig, University of Barcelona
    Uwe Nagel, University of Kentucky
    (1047-13-147)
  • 4:00 p.m.
    On a minimal set of generators for the ideal of the diagonal locus of $(C^2)^n$.
    Kyungyong Lee, Purdue University
    Li Li*, University of Illinois at Urbana-Champaign
    (1047-05-375)
  • 4:30 p.m.
    Koszul incidence algebras, affine semigroups, and Stanley-Reisner ideals.
    Victor Reiner, University of Minnesota, Twin Cities
    Dumitru I. Stamate*, Institute of Mathematics "Simion Stoilow" of the Romanian Academy
    (1047-16-98)
  • 5:00 p.m.
    Stanley decompositions and squarefree monomial ideals.
    YiHuang Shen*, Purdue University
    (1047-05-25)
  • 5:30 p.m.
    On the Cohomology of a Simple Normal Crossings Divisor and its Dual Complex.
    Parsa Bakhtary*, Purdue University
    (1047-14-398)

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