AMS Sectional Meeting Full Program
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2001 Spring Central Section Meeting
Lawrence, KS, March 3031, 2001
Meeting #964
Associate secretaries: Susan J Friedlander, AMS susan@math.northwestern.edu
Friday March 30, 2001

Friday March 30, 2001, 8:00 a.m.4:30 p.m.
Meeting Registration
Third Floor Lobby, Snow Hall

Friday March 30, 2001, 8:00 a.m.4:30 p.m.
Exhibit and Book Sale
Room 408, Snow Hall

Friday March 30, 2001, 8:30 a.m.11:20 a.m.
Special Session on Commutative Algebra, I
Room 350, Strong Hall Organizers: Craig Huneke, University of Kansas huneke@math.ukans.edu
Daniel Katz, University of Kansas dlk@math.ukans.edu

8:30 a.m.
Algorithms on Parametric Decomposition of Monomial Ideals.
JungChen Liu*, National Taiwan Normal University
(9641347)

9:00 a.m.
CohenMacaulayness of special fiber rings and integral closure of ideals.
Claudia Polini*, University of Oregon
(96413159)

9:30 a.m.
Monoidal Extensions of a CohenMacaulay Unique Factorization Domain.
William J Heinzer*, Purdue University
Aihua Li, Loyola Univ.
Louis J Ratliff, Univ. of California, Riverside
David E Rush, Univ. of California, Riverside
(9641340)

10:00 a.m.
On a conjecture of Auslander and Reiten.
Graham J Leuschke*, University of Kansas
(96413222)

10:30 a.m.
Gorenstein Artin Algebras and their Hilbert Functions.
Hema Srininasan*, University of MissouriColumbia
Anthony Iarrabino, Northeastern University
(96413134)

11:00 a.m.
The Tor Game.
Craig L Huneke, University of Kansas
Roger A Wiegand*, University of Nebraska
(96413145)

Friday March 30, 2001, 8:30 a.m.11:20 a.m.
Special Session on Optimal Control, Calculus of Variations, and Nonsmooth Analysis, I
Room 554, Snow Hall Organizers: Michael Malisoff, Texas A\&M University, Corpus Christi malisoff@penguin.tamucc.edu
Peter R. Wolenski, Louisiana State University

8:30 a.m.
Necessary Conditions of Optimality for Impulsive Control Problems with State Constraints.
Fernando Pereira*, Porto University
Geraldo da Silva, Universidade Estadual Paulista
(96449200)

9:00 a.m.
SubLipschitz Mappings and Connections to Optimal Control and the HamiltonJacobi Equation.
Grant N. Galbraith*, University of California, Davis
(96449205)

9:30 a.m.
Recent Results on Viscosity Solutions of the Bellman Equation for Optimal Control Problems with Exit Times.
Michael A. Malisoff*, Texas A \& M UniversityCorpus Christi
(96449238)

10:00 a.m.
Optimal Control and HamiltonJacobi Equations with Discontinuous Data Dependence.
Dan Ostrov*, Santa Clara University
(96449193)

10:30 a.m.
Necessary Conditions for Constrained Optimization Problems, their Applications and a Variational Proof.
Qiji J Zhu*, Western Michigan University
(96449111)

11:00 a.m.
Discussion

Friday March 30, 2001, 9:00 a.m.11:20 a.m.
Special Session on Algebraic Geometry, I
Room 339, Strong Hall Organizers: Christopher Peterson, Colorado State University peterson@math.colostate.edu
B. P. Purnaprajna, University of Kansas purna@math.ukans.edu

9:00 a.m.
Secants and Fulton's conjecture on the ample cone of the space of marked curves.
Pete Vermeire*, Oklahoma State University
(96414155)

9:30 a.m.
Hodge and Tate cycles on the moduli space of vector bundles.
Donu Arapura*, Purdue University
(96414102)

10:00 a.m.
On a problem of Raynaud for canonical curves.
Mircea I Mustata*, U.C. Berkeley
Mihnea Popa, University of Michigan
(96414162)

10:30 a.m.
Construction of vector bundles on Projective Spaces in positive characteristics.
Mohan Kumar*, Washington University
Chris Peterson, Colorado State University
Prabhakar Rao, University of Missori, St. Louis
(96414135)

11:00 a.m.
Linear systems with multiple base points in $P^2$.
Brian Harbourne*, University of NebraskaLincoln
Joaquim Ro\'e, Universitat de Barcelona
(9641434)

Friday March 30, 2001, 9:00 a.m.11:25 a.m.
Special Session on Number Theory, I
Room 337, Strong Hall Organizers: Ken Ono, University of Wisconsin, Madison ono@math.wisc.edu
Cristian Popescu, University of Texas at Austin popescu@math.utexas.edu
Tonghai Yang, Harvard University thyang@math.harvard.edu

9:00 a.m.
On the average of central values of symmetric square $L$functions in weight aspect.
Winfried Kohnen*, Mathematisches Institut, Universitaet Heidelberg, Germany
(96411105)

9:30 a.m.
Break

10:00 a.m.
Average Frobenius distributions of elliptic curves with prescribed torsion subgroups.
Kevin L James*, Clemson University
(9641173)

10:30 a.m.
Zeta functions of an infinite family of K3 surfaces.
David K Penniston*, Furman University
Scott Ahlgren, Colgate University
Ken Ono, University of Wisconsin
(96411114)

11:00 a.m.
A qseries identity which reveals the arithmetic of the Hurwitz zeta function.
Gwynneth G.H. Coogan*, University of Wisconsin, Madison
Ken Ono, University of Wisconsin, Madison
(9641175)

Friday March 30, 2001, 9:00 a.m.11:20 a.m.
Special Session on Progress in Numerical Linear Algebra, I
Room 454, Snow Hall Organizers: Ralph Byers, University of Kansas byers@math.ukans.edu

9:00 a.m.
Is Every Matrix Similar to a Toeplitz Matrix?
D. Steven Mackey*, Kalamazoo College
Niloufer Mackey, Western Michigan University
Srdjan Petrovic, Western Michigan University
(9641565)

9:30 a.m.
A review of nonorthogonal methods in matrix eigenvalue computations.
Frank Uhlig*, Auburn University
(9646537)

10:15 a.m.
Break

10:30 a.m.
Toward a Recursive QR Algorithm.
Karen S Braman*, University of Kansas
(9646549)

11:00 a.m.
An Efficient Implementation of the QR algorithm for Computing Zeros of Szeg\H{o} Polynomials.
Gregory S. Ammar*, Northern Illinois University
(9646567)

Friday March 30, 2001, 9:00 a.m.11:30 a.m.
Special Session on PDEs and Geometry, I
Room 321, Snow Hall Organizers: Marianne Korten, Kansas State University marianne@math.ksu.edu
Lev Kapitanski, Kansas State University levkapit@math.ksu.edu

9:00 a.m.
A Criteria for Compactness in Some Overdetermined Problems and Its Application to the Boundary Regularity of Contact Sets.
Ivan A Blank*, Rutgers University
Henrik Shahgholian, Royal Inst. of Technology Stockholm
(96435210)

9:40 a.m.
The subelliptic obstacle problem.
Donatella Danielli*, Johns Hopkins University
Nicola Garofalo, Johns Hopkins University
Sandro Salsa, Polytechnic of Milan
(96435227)

10:20 a.m.
Nonlinear Hyperbolic Conservative PDEs and DivergenceMeasure Vector Fields.
GuiQiang G Chen*, Northwestern University
(96435110)

11:00 a.m.
On the existence of convex classical solutions for the generalized PrandtlBatchelor free boundary problem.
Andrew F Acker*, Wichita State University
(96435246)

Friday March 30, 2001, 9:00 a.m.11:20 a.m.
Special Session on Polytopes, I
Room 335, Strong Hall Organizers: Margaret Bayer, University of Kansas bayer@math.ukans.edu
Carl Lee, University of Kentucky lee@ms.uky.edu

9:00 a.m.
Counting faces in the extended Shi arrangement.
Richard Ehrenborg*, University of Kentucky
(9640546)

9:30 a.m.
Bases for the Flag fVectors of Eulerian Posets.
Nathan P Reading*, University of Minnesota
(9640525)

10:00 a.m.
Relating flag $f$vector inequalities from the {\bf cd}index and toric $g$vector.
Catherine Stenson*, Juniata College
(96452199)

10:30 a.m.
Meaning and uses of the $\ell$vector.
G\'abor Hetyei*, UNC Charlotte
(96406216)

11:00 a.m.
The Manin ring in string theory.
Margaret A Readdy*, University of Kentucky
(9640544)

Friday March 30, 2001, 9:00 a.m.11:20 a.m.
Special Session on Quantization and Operator Algebras, I
Room 120, Snow Hall Organizers: Albert Sheu, University of Kansas sheu@math.ukans.edu

9:00 a.m.
The Haar measure on locally compact quantum groups.
Alfons Van Daele*, University of Leuven (Belgium)
(96446128)

9:30 a.m.
Transverse Groupoids.
Jerome Kaminker*, IUPUI
(96419241)

10:00 a.m.
Classical limits of C*bundles and groupoid bundles.
Birant Ramazan*, IUPUI
(96481232)

10:30 a.m.
Isomorphisms of crossed products by minimal diffeomorphisms.
N. Christopher Phillips*, University of Oregon
(96446142)

11:00 a.m.
Construction of C*algebraic quantum groups via generalized crossed products.
ByungJay Kahng*, University of Kansas
(96446174)

Friday March 30, 2001, 9:00 a.m.11:20 a.m.
Special Session on Complex Variables, I
Room 302, Snow Hall Organizers: Pietro PoggiCorradini, Kansas State University pietro@math.ksu.edu

9:00 a.m.
Caloric Measure in Parabolic Flat Domains.
Steve Hofmann, University of Missouri
John L Lewis*, University of Kentucky
Kaj Mystrom, University of Umea
(9643038)

9:30 a.m.
$L^p$ Regularity of the Szego and Bergman Projections on NonSmooth Planar Domains.
Loredana Lanzani*, University of Arkansas
Elias M. Stein, Princeton University
(96430108)

10:00 a.m.
A symmetrization problem for Green functions in the plane.
Albert Baernstein, II*, Washington University
(96430116)

10:30 a.m.
Convergence properties of harmonic measure distributions for planar domains.
Marie A. Snipes, Harvey Mudd College
Lesley A. Ward*, Harvey Mudd College
(96430163)

11:00 a.m.
Harmonic Measures for Symmetric Stable Processes.
JangMei G Wu*, University of Illinois
(96431107)

Friday March 30, 2001, 9:30 a.m.11:20 a.m.
Special Session on Set Theoretic Topology and Boolean Algebra, I
Room 552, Snow Hall Organizers: William Fleissner, University of Kansas fleissne@math.ukans.edu

9:30 a.m.
Axiom F: its status and uses.
Peter J Nyikos*, University of South Carolina
(96454203)

10:00 a.m.
$\kappa$normality in products of ordinals.
Lutfi Kalantan, King Abdulaziz University
Paul J Szeptycki*, York University
(9645464)

10:30 a.m.
Selection principles in topology.
Liljana Babinkostova, St.Cyril and Methodius University
Ljubisa Kocinac, University of Nis
Marion Scheepers*, Boise State University
(9645486)

11:00 a.m.
Possibly every real function is continuous on a nonnull set.
Andrzej Ros{\l}anowski*, University of Nebraska at Omaha
Saharon Shelah, The Hebrew University of Jerusalem
(96403115)

Friday March 30, 2001, 9:30 a.m.11:25 a.m.
Special Session on Harmonic Analysis and Applications, I
Room 306, Snow Hall Organizers: Rodolfo Torres, University of Kansas torres@math.ukans.edu

9:30 a.m.
Best constants for the MoserTrudinger inequalities on the Heisenberg group.
William S Cohn, Wayne State University
Guozhen Lu*, Wayne State University
(9643536)

10:00 a.m.
Poincar\'eSobolev inequalities without derivatives.
Carlos P\'erez*, Universidad Aut\'onoma de Madrid
(96442130)

10:30 a.m.
Carleson Measures for the Dirichlet Space.
Richard Rochberg*, Washington University, St. Louis
Nicola Arcozzi, Universita di Bologna
(96446188)

11:00 a.m.
Continuous Wavelets and their Discretezations.
Guido L Weiss*, Washington University
(9644220)

Friday March 30, 2001, 9:30 a.m.11:15 a.m.
Special Session on Deformation Theory, I
Room 452, Snow Hall Organizers: Yan Soibelman, Kansas State University soibel@math.ksu.edu
David Yetter, Kansas State University dyetter@math.ksu.edu

9:30 a.m.
Deformation Theory for Monoidal Categories, Functors and Natural Transformations.
D. N. Yetter*, Kansas State University
(96418132)

10:30 a.m.
Deformation Quantization  Old and New.
Jim Stasheff*, UNCCH
(96481168)

Friday March 30, 2001, 11:40 a.m.12:30 p.m.
Invited Address
Rational functions with real critical points.
Room 330, Strong Hall
Alexandre Eremenko*, Purdue University

Friday March 30, 2001, 2:00 p.m.2:50 p.m.
Invited Address
Number theory and partitions: The legacy of Dyson and Ramanujan.
Room 330, Strong Hall
Ken Ono*, University of WisconsinMadison
(9641101)

Friday March 30, 2001, 3:00 p.m.5:50 p.m.
Special Session on Commutative Algebra, II
Room 350, Strong Hall Organizers: Craig Huneke, University of Kansas huneke@math.ukans.edu
Daniel Katz, University of Kansas dlk@math.ukans.edu

3:00 p.m.
Seven questions about tight closure.
Melvin Hochster*, University of Michigan
(96413185)

3:30 p.m.
Frobenius Powers of Complete Intersections.
Luchezar L Avramov, Purdue University
Claudia Miller*, Michigan State University
(96413234)

4:00 p.m.
Cyclic covers of rings with rational singularities.
Anurag K Singh*, University of Utah
(96413100)

4:30 p.m.
Bounding the action of Frobenius on ${\mathrm{Ext}}^i(M,)$.
Moira A McDermott*, Gustavus Adolphus College
Carolyn A Yackel, Indiana University
(96413239)

5:00 p.m.
Test ideals and base change problems in tight closure theory.
Ian M Aberbach*, University of Missouri
Florian Enescu, University of Michigan
(96413192)

5:30 p.m.
Test ideals and base change problems in tight closure theory.
Ian M Aberbach, University of Missouri, Columbia
Florian Enescu*, University of Michigan, Ann Arbor
(96413204)

Friday March 30, 2001, 3:00 p.m.5:50 p.m.
Special Session on Set Theoretic Topology and Boolean Algebra, II
Room 552, Snow Hall Organizers: William Fleissner, University of Kansas fleissne@math.ukans.edu

3:00 p.m.
Locally nice spaces and Axiom R.
Zoltan T Balogh*, Miami University,Oxford, Ohio
(96454225)

3:30 p.m.
Small compact spaces and the Pseudoradial property.
Alan S Dow*, University of North Carolina at Charlotte
(9645488)

4:00 p.m.
PFA and perfect preimages of $\omega_1$.
Erick T Eisworth*, University of Northern Iowa
(9645427)

4:30 p.m.
Lindelof Sigma spaces with a small diagonal.
Gary Gruenhage*, Auburn University
(96454218)

5:00 p.m.
Bohr Topologies and Compact Function Spaces.
Joan E Hart*, University of Dayton
Kenneth Kunen, University of WisconsinMadison
(9645433)

5:30 p.m.
Partition relations for partially ordered sets via elementary substructures.
Albin L Jones*, Kenyon College
(96403173)

Friday March 30, 2001, 3:00 p.m.5:20 p.m.
Special Session on Algebraic Geometry, II
Room 339, Strong Hall Organizers: Christopher Peterson, Colorado State University peterson@math.colostate.edu
B. P. Purnaprajna, University of Kansas purna@math.ukans.edu

3:00 p.m.
On the analytic rigidity of $K$trivial extremal contractions of smooth threefolds.
Csilla Tam\'as*, Purdue University
(96414123)

3:30 p.m.
On a conjecture of Iitaka.
Qi Zhang*, University of Missouri
(96414160)

4:00 p.m.
Resolution, Factorization and Toroidalization.
Kenji Matsuki*, Purdue University
(9641483)

4:30 p.m.
Vanishing of differentials along ideals.
Steven D Cutkosky*, University of Missouri
Reinhold Huebl, University of Regensburg
(96414129)

5:00 p.m.
Cohomology on toric varieties.
Gregory G Smith*, UC Berkeley
(96414127)

Friday March 30, 2001, 3:00 p.m.5:25 p.m.
Special Session on Number Theory, II
Room 337, Strong Hall Organizers: Ken Ono, University of Wisconsin, Madison ono@math.wisc.edu
Cristian Popescu, University of Texas at Austin popescu@math.utexas.edu
Tonghai Yang, Harvard University thyang@math.harvard.edu

3:00 p.m.
Equidistribution of Hecke eigenforms on the modular surface.
Wenzhi Luo*, The Ohio State University
Peter Sarnak, Princeton University
(9641130)

3:30 p.m.
Unipotent cuspidal representations of $G_2$.
Wee Teck Gan*, Princeton University
Nadya Gurevich, Princeton University
Dihua Jiang, University of Minnesota
(96411221)

4:00 p.m.
Local models for some Shimura varieties with bad reduction.
Thomas J. Haines*, Institute for Advanced Study/University of Toronto
Bao Chau Ngo, CNRS/Universite ParisNord
(96411180)

4:30 p.m.
Periodicity Properties for Fourier Coefficients of Half Integral Weight Modular Forms.
Alexandru Tupan*, Johns Hopkins University
(96411112)

5:00 p.m.
Local duality for unitary groups U(1) and U(2).
Manouchehr Misaghian*, JCSU
(9641126)

Friday March 30, 2001, 3:00 p.m.5:50 p.m.
Special Session on Progress in Numerical Linear Algebra, II
Room 454, Snow Hall Organizers: Ralph Byers, University of Kansas byers@math.ukans.edu

3:00 p.m.
A Perplectic Family of Eigenproblems.
Niloufer Mackey*, Western Michigan University
D. Steven Mackey, Kalamazoo College
Danny Dunlavy, Western Michigan University
(9641555)

3:30 p.m.
An Efficient Numerical Algorithm for Large and Sparse Algebraic Riccati Equations.
Peter Benner*, University of Bremen
Thilo Penzl, University of Calgary (last affiliation)
(9646548)

4:15 p.m.
Break

4:30 p.m.
On solving certain quadratic eigenproblems.
Heike Fassbender*, TU M\"unchen, Germany
(9646541)

5:00 p.m.
Structured URV Decompositions and Structured Eigenvalue Problems.
Hongguo Xu*, The University of Kansas
(9646558)

5:30 p.m.
Numerical Solution of Nonsymmetric Algebraic Riccati Equations.
ChunHua Guo*, University of Regina
(9646535)

Friday March 30, 2001, 3:00 p.m.6:10 p.m.
Special Session on PDEs and Geometry, II
Room 321, Snow Hall Organizers: Marianne Korten, Kansas State University marianne@math.ksu.edu
Lev Kapitanski, Kansas State University levkapit@math.ksu.edu

3:00 p.m.
A singular minimizer in two dimensional elasticity.
Xiaodong Yan*, Courant Institute of Mathematical Sciences
(9643554)

3:40 p.m.
Local energy minimality of capillary surfaces in the presence of symmetry.
Thomas I Vogel*, Texas A\&M University
(9645110)

4:20 p.m.
Differential properties of Xray functions of convex bodies.
Alexander Koldobsky*, University of MissouriColumbia
(9645222)

5:00 p.m.
Timelike surfaces of constant mean curvature and their corresponding PDEs.
Josef Dorfmeister, Technische Universitat Munchen
Junichi Inoguchi, Fukuoka University
Magdalena Toda*, Ball State University
(96453186)

5:40 p.m.
Integrable Geometric Evolution Equations for Curves.
Thomas A. Ivey*, College of Charleston
(9645369)

Friday March 30, 2001, 3:00 p.m.5:50 p.m.
Special Session on Polytopes, II
Room 335, Strong Hall Organizers: Margaret Bayer, University of Kansas bayer@math.ukans.edu
Carl Lee, University of Kentucky lee@ms.uky.edu

3:00 p.m.
Orthogonal Matroids.
Andrew Vince, University of Florida
Neil L White*, University of Florida
(9640585)

3:30 p.m.
Recovering Lexicographic Triangulations from their $z$vectors.
Wendy A Weber*, Central College
Carl W Lee, University of Kentucky
(96452201)

4:00 p.m.
Permutahedra Relative to a Regular Polytope.
Vincent J Matsko*, Quincy University
(96452153)

4:30 p.m.
Discrete Morse functions from lexicographic orders.
Eric K Babson, University of Washington
Patricia L Hersh*, University of Washington
(96405198)

5:00 p.m.
Alexander duality for projections of polytopes.
Xun Dong*, University of Minnesota
(9645214)

5:30 p.m.
Revisiting bicyclic 4polytopes.
Ted Bisztriczky*, University of Calgary
(9645223)

Friday March 30, 2001, 3:00 p.m.6:30 p.m.
Special Session on Optimal Control, Calculus of Variations, and Nonsmooth Analysis, II
Room 554, Snow Hall Organizers: Michael Malisoff, Texas A\&M University, Corpus Christi malisoff@penguin.tamucc.edu
Peter R. Wolenski, Louisiana State University

3:00 p.m.
Convergence Questions for Augmented Lagrangian Methods in an Optimal Control Setting.
Joe Dunn*, North Carolina State University
(96449214)

4:00 p.m.
Direct Transcription Solution of Inequality Constrained Optimal Control Problems.
Stephen L Campbell*, North Carolina State University
Neil Biehn, North Carolina State University
John T Betts, Boeing Corporation
(96465138)

4:30 p.m.
A Lyapunov Characterization of a Notion of Detectability for Nonlinear Systems.
Brian P Ingalls*, Rutgers University
(96493156)

5:00 p.m.
Nonlinear Observer Design in the Siegel Domain.
Arthur Krener, University of California, Davis
Mingqing Xiao*, Southern Illinois University, Carbondale
(96449140)

5:30 p.m.
Faithful representations for convex HamiltonJacobi equations.
Franco Rampazzo*, Universita' di Padova (Italy)
(96449175)

6:00 p.m.
Discussion

Friday March 30, 2001, 3:00 p.m.5:25 p.m.
Special Session on Harmonic Analysis and Applications, II
Room 306, Snow Hall Organizers: Rodolfo Torres, University of Kansas torres@math.ukans.edu

3:00 p.m.
The Marcinkiewicz multiplier condition for bilinear operators.
Loukas Grafakos, University of Missouri
Nigel J Kalton*, University of Missouri
(9644628)

3:30 p.m.
Segment multiplier and truncated Hilbert transform on rearrangementinvariant spaces.
Ron Kerman, Brock University
Jan Lang*, University of Missouri
(9644212)

4:00 p.m.
Uniform bounds for the bilinear Hilbert transforms.
Loukas Grafakas, University of MissouriColumbia
Li Xiaochun*, University of MissouriColumbia
(9644262)

4:30 p.m.
Schrodinger Maps.
Andrea Nahmod*, University of Massachusetts at Amherst
Atanas Stefanov, University of Massachusetts at Amherst
Karen Uhlenbeck, University of Texas at Austin
(96435182)

5:00 p.m.
$L^p$ estimates for operators appearing in eigenfunction expansions of Schroedinger operators.
Camil Muscalu, UCLA
Terence Tao, UCLA
Christoph Thiele*, UCLA
(96442148)

Friday March 30, 2001, 3:00 p.m.5:20 p.m.
Special Session on Quantization and Operator Algebras, II
Room 120, Snow Hall Organizers: Albert Sheu, University of Kansas sheu@math.ukans.edu

3:00 p.m.
Approximation properties of noncommutative $L_p(VN(G))$ spaces.
Marius Junge, University of Illinois
ZhongJin Ruan*, University of Illinois
(96446147)

3:30 p.m.
A relativistic quantum line.
Nik Weaver*, Washington University/MSRI
(9644684)

4:00 p.m.
Into isometries of C*algebras.
ChoHo Chu, Goldsmiths' College, University of London
NgaiChing Wong*, National Sun Yatsen University
(9644608)

4:30 p.m.
Boundary Value Problems in Noncommutative Geometry.
Slawomir Klimek*, IUPUI
(96447170)

5:00 p.m.
Fredholm modules over certain group C*algebras.
Tom Hadfield*, University of California at Berkeley
(96446231)

Friday March 30, 2001, 3:00 p.m.5:50 p.m.
Special Session on Complex Variables, II
Room 302, Snow Hall Organizers: Pietro PoggiCorradini, Kansas State University pietro@math.ksu.edu

3:00 p.m.
Multiplicator Problem and Characteristics of Growth of Entire Functions.
Vladimir Azarin*, BarIlan University, Israel
(9643007)

3:30 p.m.
Sets of asymptotic values for entire meromorphic functions of finite order.
Alicia Canton*, University of Washington
David Drasin, Purdue University
Ana Granados, University of Washington
(9643074)

4:00 p.m.
Inner functions and Rajchman measures.
Alexei G Poltoratski*, Texas A\&M
(9643081)

4:30 p.m.
Index theorems for the shift and a note on harmonic polynomial approximation.
John R Akeroyd*, University of Arkansas
(9643021)

5:00 p.m.
On the failure of a generalized DenjoyWolff Theorem.
Pietro PoggiCorradini*, Kansas State University
(96430161)

5:30 p.m.
Minimal Area Problems and Local Variations.
Roger W Barnard*, Texas Tech University
Kent Pearce, Texas Tech University
Alexander Yu. Solynin, Texas Tech University
(9643080)

Friday March 30, 2001, 3:00 p.m.5:45 p.m.
Special Session on Deformation Theory, II
Room 452, Snow Hall Organizers: Yan Soibelman, Kansas State University soibel@math.ksu.edu
David Yetter, Kansas State University dyetter@math.ksu.edu

3:00 p.m.
${A_{\infty}}$ structures on the homogeneous coordinate ring of an elliptic curve.
Alexander Polishchuk*, Boston University
(96414117)

4:00 p.m.
String Topology Revisited.
Alexander A. Voronov*, Michigan State University
(96455228)

5:00 p.m.
Deformations of vertex algebras and quantum cohomology of projective spaces.
Feodor Malikov*, USC
(96414223)

Friday March 30, 2001, 3:00 p.m.3:25 p.m.
Session for Contributed Papers
Room 558, Snow Hall

3:00 p.m.
A Comparison Theorem for 4th Order Boundary Value Problems.
Kathleen M GoedenFick*, Auburn University
(9643492)

3:15 p.m.
Analytic solution of second order diffrntial equation and riccati's equation.
Ali a Salim*, AmmanJordan
(9643497)

Friday March 30, 2001, 4:00 p.m.5:20 p.m.
Special Session on C*Algebras and Crossed Products, I
Room 301, Snow Hall Organizers: Steve Kaliszewski, Arizona State University kaliszewski@asu.edu
May Nilsen, Texas A\&M University mnilsen@math.tamu.edu

4:00 p.m.
Approximation properties of crossed products.
May M Nilsen*, Texas A&M
Roger Smith, Texas A&M
(96447190)

4:30 p.m.
Numerical Ranges of Some Special Classes of Operators.
Valentin Matache*, University of Nebraska
(96447213)

5:00 p.m.
On The Generalized Numerical Range and The Representation Spectrum.
Norberto Salinas*, University of Kansas
(9644782)

Friday March 30, 2001, 6:30 p.m.8:30 p.m.
Department of Mathematics Reception
1266 Oread Ave, Alumni Center
Saturday March 31, 2001

Saturday March 31, 2001, 8:00 a.m.12:00 p.m.
Meeting Registration
Third Floor Lobby, Snow Hall

Saturday March 31, 2001, 8:00 a.m.12:00 p.m.
Exhibit and Book Sale
Room 408, Snow Hall

Saturday March 31, 2001, 8:30 a.m.11:20 a.m.
Special Session on Commutative Algebra, III
Room 350, Strong Hall Organizers: Craig Huneke, University of Kansas huneke@math.ukans.edu
Daniel Katz, University of Kansas dlk@math.ukans.edu

8:30 a.m.
Henselianlike prime ideals.
Stephen McAdam*, University of Texas at Austin, Austin, TX
(9641351)

9:00 a.m.
Some Results in Complete Intersections.
Satya Mandal*, University of Kansas
(96413122)

9:30 a.m.
Local cohomology of syzygies of the residue field.
Sankar P. Dutta*, University of Illinois at UrbanaChampaign
(9641376)

10:00 a.m.
Extensions of Plus Closure.
Raymond C Heitmann*, University of Texas at Austin
(96413202)

10:30 a.m.
Discussion

11:00 a.m.
Modules of finite length and finite projective dimension.
Paul C. Roberts*, University of Utah
(9641391)

Saturday March 31, 2001, 8:30 a.m.11:20 a.m.
Special Session on Set Theoretic Topology and Boolean Algebra, III
Room 552, Snow Hall Organizers: William Fleissner, University of Kansas fleissne@math.ukans.edu

8:30 a.m.
On extent and starLindel\"of number.
Mikhail V Matveev*, Irvine, California
(96454109)

9:00 a.m.
An observation on the extent of normal starLindel\"of spaces.
Ronnie Levy*, George Mason University
(9645443)

9:30 a.m.
Almost disjoint families and maximal abelian subgroups.
Juris Stepr\={a}ns*, York University
(9640361)

10:00 a.m.
Open colorings, the continuum, and the second uncountable cardinal.
Justin Tatch Moore*, University of East Anglia
(9640332)

10:30 a.m.
Is there an antidowker subset of $(\omega_1)^2$?
Oleg I Pavlov*, Wesleyan College
(96454167)

11:00 a.m.
Applications of Elementary Submodels on the space $C_{p}(X)$.
Adrienne M Stanley*, University of Northern Iowa
(96454220)

Saturday March 31, 2001, 8:30 a.m.11:20 a.m.
Special Session on Algebraic Geometry, III
Room 339, Strong Hall Organizers: Christopher Peterson, Colorado State University peterson@math.colostate.edu
B. P. Purnaprajna, University of Kansas purna@math.ukans.edu

8:30 a.m.
Detecting flat normal cones using Segre classes.
Susan J Colley*, Oberlin College
Gary Kennedy, Ohio State University at Mansfield
(9641496)

9:00 a.m.
Monomial Ideals and the Gorenstein Liaison Class of a Complete Intersection.
Juan C. Migliore*, University of Notre Dame
Uwe Nagel, University of Paderborn
(9641490)

9:30 a.m.
Multiplicity at a singular point on a Schubert variety.
Vankatramani Lakshmibai*, Northeastern University
Victor Kreiman, Northeastern University
(96414171)

10:00 a.m.
Exterior algebra methods for the Minimal Resolution Conjecture.
David Eisenbud, University of California, Berkeley
Sorin Popescu*, SUNY at Stony Brook
FrankOlaf Schreyer, University of Bayreuth
Charles Walter, University of Nice
(96414157)

10:30 a.m.
Affine Surfaces Fibered By Affine Lines Over The Projective Line.
David L Wright*, Washington University
(96414113)

11:00 a.m.
Milnor Ktheory of smooth algebraic schemes.
Reza Akhtar*, Miami University
(96414229)

Saturday March 31, 2001, 8:30 a.m.11:20 a.m.
Special Session on Optimal Control, Calculus of Variations, and Nonsmooth Analysis, III
Room 554, Snow Hall Organizers: Michael Malisoff, Texas A\&M University, Corpus Christi malisoff@penguin.tamucc.edu
Peter R. Wolenski, Louisiana State University

8:30 a.m.
Discontinuous solutions and comparison results for a class of HamiltonJacobi equations.
Antonio Siconolfi*, Univ. di Roma "La Sapienza''
(96449195)

9:00 a.m.
Numerical Analysis in Optimal Control.
William W Hager*, University of Florida
(96449250)

10:00 a.m.
Discussion

10:30 a.m.
Viscosity solutions of HamiltonJacobiBellman equations for the optimal control of NavierStokes equations.
Andzrej Swiech*, Georgia Institute of Technology
F. Gozzi, Universita di Pisa
S. S. Sritharan, Space & Naval Warfare Systems Center
(96449165)

11:00 a.m.
Optimal Stochastic Control Applied to Mathematical Finance.
Agnes Tourin*, University of Toronto
Thaleia Zariphopoulou, University of Texas at Austin
(96493126)

Saturday March 31, 2001, 8:30 a.m.11:20 a.m.
Special Session on Quantization and Operator Algebras, III
Room 120, Snow Hall Organizers: Albert Sheu, University of Kansas sheu@math.ukans.edu

8:30 a.m.
Constructing non commutative istantons from coisotropic subgroups.
Nicola Ciccoli*, Dipartimento di Matematica, Universita' di Perugia
Francesco Bonechi, INFN, Firenze
Marco Tarlini, INFN, Firenze
(96458181)

9:00 a.m.
Wavelets, spin vectors, and representation theory.
Palle E.T. Jorgensen*, The University of Iowa
(9644606)

9:30 a.m.
Some Geometric Aspects of Free Semigroup Algebras.
Kenneth R Davidson, University of Waterloo
Elias Katsoulis, East Carolina University
David R Pitts*, University of Nebraska
(96447183)

10:00 a.m.
Automatic Closure of Invariant Linear Manifolds.
Allan P Donsig*, University of Nebraska, Lincoln
Alan Hopenwasser, University of Alabama
David R Pitts, University of Nebraska, Lincoln
(96447236)

10:30 a.m.
Structure and Isomorphism Classification of Compact Quantum Groups $A_u(Q)$ and $B_u(Q)$.
Shuzhou Wang*, University of Georgia
(9644642)

11:00 a.m.
Extreme Points of Triangular Toeplitz Matrices.
Raul E Curto*, The University of Iowa
(96447166)

Saturday March 31, 2001, 8:30 a.m.11:20 a.m.
Special Session on Complex Variables, III
Room 302, Snow Hall Organizers: Pietro PoggiCorradini, Kansas State University pietro@math.ksu.edu

8:30 a.m.
Hyperbolic sets for holomorphic endomorphisms of $\mathbb{P}^k$.
Malgorzata S. Stawiska*, Northwestern University
(96432211)

9:00 a.m.
GehringHayman, Slice and Gromov.
Zoltan M Balogh*, Pittsburgh University
Stephen M Buckley, National University of Ireland, Maynooth
(96430179)

9:30 a.m.
Wolff Potential and selfimprovement property of uniformly $p$fat sets to metric measure spaces.
Nageswari Shanmugalingam*, University of Texas at Austin
(9643187)

10:00 a.m.
Quasiconformal groups with small dilatation.
Petra BonfertTaylor*, Wesleyan University
Gaven J Martin, University of Auckland
(9643056)

10:30 a.m.
Quasihyperbolic geometry, Poincar\'e inequalities and H\"older continuity of quasiconformal maps.
Pekka Koskela, University of Jyv\"askyl\"a
Jani Onninen, University of Jyv\"askyl\"a
Jeremy T Tyson*, State University of New York at Stony Brook
(9643071)

11:00 a.m.
Riemann Surfaces and Circle Packings.
G. Brock Williams*, Texas Tech University
(96430194)

Saturday March 31, 2001, 9:00 a.m.11:25 a.m.
Special Session on Number Theory, III
Room 337, Strong Hall Organizers: Ken Ono, University of Wisconsin, Madison ono@math.wisc.edu
Cristian Popescu, University of Texas at Austin popescu@math.utexas.edu
Tonghai Yang, Harvard University thyang@math.harvard.edu

9:00 a.m.
Independence of Function Field Gamma Values.
W Dale Brownawell*, Penn State University
Matthew A Papanikolas, Brown University
(96411152)

9:30 a.m.
$t$Modules with Complex Multiplication.
Dale Brownawell, Penn State University
Matthew Papanikolas*, Brown University
(96411103)

10:00 a.m.
Modular Qcurves and a generalized Fermat equation.
Jordan S Ellenberg*, Princeton University
(96411144)

10:30 a.m.
On relations between induced representations for $GL_2(Z/p^2Z)$.
Imin Chen*, Simon Fraser University
Bart deSmit, Leiden University
Martin Grabitz, Humboldt University
(9641189)

11:00 a.m.
On the rank of Jacobian fibrations.
Siman Wong*, University of Massachusetts at Amherst
(9641163)

Saturday March 31, 2001, 9:00 a.m.11:20 a.m.
Special Session on Progress in Numerical Linear Algebra, III
Room 454, Snow Hall Organizers: Ralph Byers, University of Kansas byers@math.ukans.edu

9:00 a.m.
The Definite Generalized Eigenvalue Problem: A Reworked Perturbation Theory.
Roy Mathias*, William and Mary
ChiKwong Li, William and Mary
(9646557)

9:30 a.m.
Geometry of linear subspaces.
Chandler Davis*, University of Toronto
(9641560)

10:00 a.m.
Break

10:30 a.m.
Some Observations on Subset Selection.
Ilse C.F. Ipsen*, North Carolina State University
(9641518)

11:00 a.m.
An Evaluation of GramSchmidtlike Downdating Techniques.
Jesse L Barlow*, The Pennsylvania State University
Alicja Smoktunowicz, Warsaw University of Technology
Hasan Erbay, K\i r\i kkale University
(9646566)

Saturday March 31, 2001, 9:00 a.m.10:50 a.m.
Special Session on PDEs and Geometry, III
Room 321, Snow Hall Organizers: Marianne Korten, Kansas State University marianne@math.ksu.edu
Lev Kapitanski, Kansas State University levkapit@math.ksu.edu

9:00 a.m.
Rearrangements of Functions in Carnot Groups.
Juan J Manfredi*, University of Pittsburgh
Virginia N Vera de Serio, Universidad Nacional de Cuyo
(9643578)

9:40 a.m.
Wave maps with target in the Heisenberg group.
Luca Capogna*, Univerisity of Arkansas
(9643517)

10:20 a.m.
Harnack inequalities and Gaussian estimates for solutions of second order parabolic equations.
Mikhail V Safonov*, University of Minnesota
(96435249)

Saturday March 31, 2001, 9:00 a.m.11:20 a.m.
Special Session on Polytopes, III
Room 335, Strong Hall Organizers: Margaret Bayer, University of Kansas bayer@math.ukans.edu
Carl Lee, University of Kentucky lee@ms.uky.edu

9:00 a.m.
Firstorder and Convex Rigidity of Polyhedra in Euclidean, Spherical and Hyperbolic Spaces I.
Franco V. Saliola, Cornell University
Walter J. Whiteley*, York University
(96452219)

9:30 a.m.
FirstOrder and Convex Rigidity of Polyhedra in Euclidean, Spherical and Hyperbolic Spaces II.
Franco V Saliola*, Cornell University
Walter J Whiteley, York University
(96452212)

10:00 a.m.
Perfect Delaunay Polytopes for Lattices.
Robert M Erdahl*, Queen's University
(96452164)

10:30 a.m.
Edge maximal unit distance graphs in the plane.
Brigitte Servatius*, Worcester Polytechnic Institute
(96405235)

11:00 a.m.
Commensurate Delaunay Tilings of $\mathbb{Z}^n$ and Voronoi's Theory of Ltypes.
Robert M Erdahl, Queen's University
Konstantin Rybnikov*, Cornell University
(96452240)

Saturday March 31, 2001, 9:00 a.m.11:25 a.m.
Special Session on Harmonic Analysis and Applications, III
Room 306, Snow Hall Organizers: Rodolfo Torres, University of Kansas torres@math.ukans.edu

9:00 a.m.
The Boundedness of the Hilbert Transform along Vector Curves.
Sanja Hukovic*, University of Massachusetts
Andrea Nahmod, University of Massachusetts
(96442169)

9:30 a.m.
Distribution of lattice points in convex domains.
Alex Iosevich*, University of MissouriColumbia
(96442217)

10:00 a.m.
Integral Transforms Controlled by Maximal Functions.
Mircea Martin*, Baker University
Pawel Szeptycki, University of Kansas
(96443172)

10:30 a.m.
Weak type estimates for maximal functions.
Alexander Stokolos*, Louisiana State University
(96442139)

11:00 a.m.
$L^p$ improving estimates for averages along curves.
Terence C Tao*, UCLA
Jim Wright, U. Edinburgh
(96442184)

Saturday March 31, 2001, 9:30 a.m.11:15 a.m.
Special Session on Deformation Theory, III
Room 452, Snow Hall Organizers: Yan Soibelman, Kansas State University soibel@math.ksu.edu
David Yetter, Kansas State University dyetter@math.ksu.edu

9:30 a.m.
The nonabelian bar resolution.
Lucian M Ionescu*, University of Northern Colorado
(96418151)

10:30 a.m.
Presentation of Schur algebras as quotients of the quantized enveloping algebra of gl(n).
Stephen Doty, Loyola University Chicago
Anthony Giaquinto*, Loyola University Chicago
(96416208)

Saturday March 31, 2001, 10:00 a.m.11:20 a.m.
Special Session on C*Algebras and Crossed Products, II
Room 301, Snow Hall Organizers: Steve Kaliszewski, Arizona State University kaliszewski@asu.edu
May Nilsen, Texas A\&M University mnilsen@math.tamu.edu

10:00 a.m.
Completely positive maps in dilation and wavelet decompositions.
David W Kribs*, University of Iowa
(9644731)

10:30 a.m.
The Fourier algebra for locally compact groupoids.
Karla J. Oty, Southeastern Okalahoma State University
Alan L. T. Paterson*, University of Mississippi
(96446124)

11:00 a.m.
Maximal coactions.
Siegfried Echterhoff, University of Muenster
S Kaliszewski, Arizona State University
John Quigg*, Arizona State University
(96446178)

Saturday March 31, 2001, 11:40 a.m.12:30 p.m.
Invited Address
Stringy geometry and topology of orbifolds.
Room 330, Strong Hall
Yongbin Ruan*, University of WisconsinMadison

Saturday March 31, 2001, 2:00 p.m.2:50 p.m.
Invited Address
Monomialization of morphisms.
Room 330, Strong Hall
Steven D. Cutkosky*, University of Missouri
(9641404)

Saturday March 31, 2001, 3:00 p.m.5:20 p.m.
Special Session on Commutative Algebra, IV
Room 350, Strong Hall Organizers: Craig Huneke, University of Kansas huneke@math.ukans.edu
Daniel Katz, University of Kansas dlk@math.ukans.edu

3:00 p.m.
Codimension, multiplicity and integral extensions.
Aron Simis, Universidade Federal de Pernambuco
Bernd Ulrich*, Michigan State University
Wolmer Vasconcelos, Rutgers University
(96413143)

3:30 p.m.
Splitting in Galois extensions of regular rings.
Nandini Ranganathan*, University of Texas at Austin
(96413187)

4:00 p.m.
Core of ideals and integrality.
Alberto Corso*, University of Kentucky
(96413237)

4:30 p.m.
Symmetry in vanishing Ext over certain Gorenstein rings.
Craig Huneke, University of Kansas
David A Jorgensen*, University of Texas at Arlington
(96413189)

5:00 p.m.
On the associated primes of local cohomology modules.
Tom Marley*, University of NebraskaLincoln
(9641393)

Saturday March 31, 2001, 3:00 p.m.4:50 p.m.
Special Session on Set Theoretic Topology and Boolean Algebra, IV
Room 552, Snow Hall Organizers: William Fleissner, University of Kansas fleissne@math.ukans.edu

3:00 p.m.
Some problems concerning modified compactness conditions.
Robert M. Stephenson, Jr.*, University of South Carolina
(9645479)

3:30 p.m.
A solution to Katetov's problem.
Paul B. Larson*, University of Toronto
Stevo Todorcevic, University of Toronto/University of Paris VII
(9645472)

4:00 p.m.
A Lindelof space of size $\aleph_2$ with no Lindelof subspace of size $\aleph_1$.
Piotr Koszmider, University of Sao Paulo
Franklin D Tall*, University of Toronto
(9645470)

4:30 p.m.
Minimal regular ring extensions of C(X).
Melvin Henriksen, Harvey Mudd College
Robert M Raphael, Concordia University
R. Grant Woods*, University of Manitoba
(9645429)

Saturday March 31, 2001, 3:00 p.m.5:20 p.m.
Special Session on Algebraic Geometry, IV
Room 339, Strong Hall Organizers: Christopher Peterson, Colorado State University peterson@math.colostate.edu
B. P. Purnaprajna, University of Kansas purna@math.ukans.edu

3:00 p.m.
Brauer groups and quotient stacks.
Dan Edidin*, University of MissouriColumbia
Brendan Hassett, Chinese University of Hong Kong/Rice University
Andrew Kresch, University of Pennsylvania
Angelo Vistoli, University of Utah, University of Bologna
(9641495)

3:30 p.m.
Optimal Bound for the Number of (1)Curves on Extremal Rational Surfaces.
Mustapha Lahyane*, nternational Centre for Theoretical Physics (Trieste. Italy)
(96414133)

4:00 p.m.
Vertex algebras and the cohomology ring structure of Hilbert schemes of points on surfaces.
WeiPing Li, Hong Kong University of Science and Technology
Zhenbo Qin*, University of Missouri at Columbia
Weiqiang Wang, North Carolina State University at Raleigh
(9641445)

4:30 p.m.
Better relations among GromovWitten invariants.
Aaron Bertram, University of Utah
Holger P Kley*, Colorado State University
(96414154)

5:00 p.m.
On Normal Monomial Ideals.
Les Reid, Southwest Missouri State University
Leslie Roberts, Queen's University
Marie A Vitulli*, University of Oregon
(96413206)

Saturday March 31, 2001, 3:00 p.m.5:25 p.m.
Special Session on Number Theory, IV
Room 337, Strong Hall Organizers: Ken Ono, University of Wisconsin, Madison ono@math.wisc.edu
Cristian Popescu, University of Texas at Austin popescu@math.utexas.edu
Tonghai Yang, Harvard University thyang@math.harvard.edu

3:00 p.m.
The Birch and SwinnertonDyer formula for modular abelian varieties.
Amod S. Agashe*, University of Texas, Austin
(96411141)

3:30 p.m.
Euler Products on the Critical Line.
Keith Conrad*, UC San Diego
(96411101)

4:00 p.m.
The Quadratic Nature of the Markoff Spectrum in $(3+, \sqrt{13}]$.
Thomas A Schmidt, Oregon State University
Mark Sheingorn*, CUNYBaruch
(9641105)

4:30 p.m.
On the converse theorem in the theory of Borcherds products.
Jan H. Bruinier*, UWMadison
(96411247)

5:00 p.m.
Modular forms and partitions.
Scott D Ahlgren*, Colgate University
(96411248)

Saturday March 31, 2001, 3:00 p.m.5:20 p.m.
Special Session on Progress in Numerical Linear Algebra, IV
Room 454, Snow Hall Organizers: Ralph Byers, University of Kansas byers@math.ukans.edu

3:00 p.m.
Eigenvalue Verification: Tracing the Spectral Projection.
Ralph Byers*, University of Kansas
C. He, SPRINT Corporation
(9646559)

3:30 p.m.
Algebraic Theory of Schwarz Methods for Domain Decomposition.
Michele Benzi, Emory University
Andreas Frommer, Wuppertal
Reinhard Nabben, Bielefeld
Daniel B Szyld*, Temple University
(9646550)

4:15 p.m.
Break

4:30 p.m.
Numerical algorithms for Threedimensional Image Reconstruction of Macromolecular Assemblies.
Chao Yang*, Lawrence Berkeley National Laboratory
(9646552)

5:00 p.m.
A Block Arnoldi Method for ReducedOrder SylvesterObserver Equation.
Biswa N Datta*, Northern Illinois University
Joao B Carvalho, Northern Illinois University
(9646553)

Saturday March 31, 2001, 3:00 p.m.5:30 p.m.
Special Session on PDEs and Geometry, IV
Room 321, Snow Hall Organizers: Marianne Korten, Kansas State University marianne@math.ksu.edu
Lev Kapitanski, Kansas State University levkapit@math.ksu.edu

3:00 p.m.
Finite time blow up for a NavierStokes like equation.
Stephen J MontgomerySmith*, University of MissouriColumbia
(9643511)

3:40 p.m.
Vortex filament dynamics for {G}ross{P}itaevsky type equations.
Robert L Jerrard*, University of Illinois at UrbanaChampaign
(9643513)

4:20 p.m.
Thin fluid film PDEs  new dissipated energies, and film ``rupture''.
Richard S Laugesen*, University of Illinois, UrbanaChampaign
(96435104)

5:00 p.m.
Robin Boundary condition for the Laplacian on Lipschitz domains in $\mathbb R^n$.
Loredana Lanzani*, University of Arkansas
Zhongwei Shen, University of Kentucky
(9643516)

Saturday March 31, 2001, 3:00 p.m.5:20 p.m.
Special Session on C*Algebras and Crossed Products, III
Room 301, Snow Hall Organizers: Steve Kaliszewski, Arizona State University kaliszewski@asu.edu
May Nilsen, Texas A\&M University mnilsen@math.tamu.edu

3:00 p.m.
John von Neumann and two letters on operator algebras.
Randall Crist*, Creighton University
Eileen Dugan, Creighton University
(96401230)

3:30 p.m.
Finite sums of commutators.
Ciprian S Pop*, Texas A\&M University
(96446191)

4:00 p.m.
The Effect of Absolute Continuity on Feynman's Operational Calculus.
Lance W Nielsen*, Creighton University
(96447226)

4:30 p.m.
Reduced pure eigenstates for a linear combination of generators of the free group.
William L Paschke*, University of Kansas
(9644694)

5:00 p.m.
Actions of ${\mathbb Z}^k$ associated to higher rank graphs.
Alex Kumjian*, University of Nevada
(96446233)

Saturday March 31, 2001, 3:00 p.m.5:20 p.m.
Special Session on Polytopes, IV
Room 335, Strong Hall Organizers: Margaret Bayer, University of Kansas bayer@math.ukans.edu
Carl Lee, University of Kentucky lee@ms.uky.edu

3:00 p.m.
A positive semidefinite version of a simple polytope does not exist in some dimensions.
Alexander Barvinok*, University of Michigan
(96452118)

3:30 p.m.
Linear Programming with no Right Hand Side.
Walter Morris*, George Mason University
(96490196)

4:00 p.m.
Some results on the dominating set polytope.
Teresa M Contenza*, University of Montevallo
(96452149)

4:30 p.m.
Lattice points of Flow polytopes.
Jesus A De Loera*, Univ. of California, Davis
Bernd Sturmfels, Univ. of California, Berkeley
(96452121)

5:00 p.m.
Toward Characterizing the Mutation Count Matrices.
Jim Lawrence*, George Mason University
(96452242)

Saturday March 31, 2001, 3:00 p.m.5:45 p.m.
Special Session on Optimal Control, Calculus of Variations, and Nonsmooth Analysis, IV
Room 554, Snow Hall Organizers: Michael Malisoff, Texas A\&M University, Corpus Christi malisoff@penguin.tamucc.edu
Peter R. Wolenski, Louisiana State University

3:30 p.m.
Minimal Curves of Constant Torsion.
Thomas A. Ivey*, College of Charleston
(9644968)

4:00 p.m.
Discrete Optimal Control and the Dynamics of Rigid Bodies.
Anthony M Bloch*, University of Michigan
Peter E Crouch, Arizona State University
Jerrold E Marsden, California Institute of Technology
Tudor S Ratiu, Ecole Polytechnique Federale de Lausanne
(96449150)

4:30 p.m.
Highorder conditions for optimality and highorder approximating cones using a geometric language.
Matthias Kawski*, Arizona State University
(96493215)

5:00 p.m.
PathIntegral generalized differentials and the maximum principle of optimal control theory.
H\'ector J Sussmann*, Rutgers, the State University of New Jersey
(96449207)

Saturday March 31, 2001, 3:00 p.m.5:25 p.m.
Special Session on Harmonic Analysis and Applications, IV
Room 306, Snow Hall Organizers: Rodolfo Torres, University of Kansas torres@math.ukans.edu

3:00 p.m.
Estimates for a scattering map associated to a twodimensional first order system.
Russell M Brown*, University of Kentucky
(96435177)

3:30 p.m.
The solution of the square root problem of Kato.
Steve C Hofmann*, Univ. of Missouri (Columbia)
(96442209)

4:00 p.m.
Strichartztype estimates for the wave operator on the torus.
Akos Magyar*, University of Wisconsin
(96442245)

4:30 p.m.
Recent progress for the biharmonic equation on Lipschitz domains.
Atanas G Stefanov*, University of Massachusetts
Greg Verchota, Syracuse University
(96435137)

5:00 p.m.
Relative form boundedness and compactness criteria for the Schr\"odinger operator.
Vladimir G Maz'ya, Link\"oping University
Igor E Verbitsky*, University of MissouriColumbia
(96442158)

Saturday March 31, 2001, 3:00 p.m.4:20 p.m.
Special Session on Complex Variables, IV
Room 302, Snow Hall Organizers: Pietro PoggiCorradini, Kansas State University pietro@math.ksu.edu

3:00 p.m.
Classification Theorems for General Orthogonal Polynomials.
Sergei V Khrushchev*, St.Petersburg and Purdue University
(9643099)

3:30 p.m.
Small polynomials with integer coefficients.
Igor E Pritsker*, Oklahoma State University
(9643039)

4:00 p.m.
Holomorphic Extension of $H^p$ CR Functions on Quadrics.
Albert Boggess*, Texas A\&M University
(9643277)

Saturday March 31, 2001, 3:00 p.m.5:45 p.m.
Special Session on Deformation Theory, IV
Room 452, Snow Hall Organizers: Yan Soibelman, Kansas State University soibel@math.ksu.edu
David Yetter, Kansas State University dyetter@math.ksu.edu

3:00 p.m.
Noncommutative spaces and schemes.
Alexander L Rosenberg*, Kansas State University
(96414243)

4:00 p.m.
Quadratica algebras generated by pseudoroots of noncommutative polynomials.
Vladimir Retakh*, Rutgers University
(96416197)

5:00 p.m.
Qanalog of Berezin quantization method.
Dmitrii Shklyarov*, FTINT
(96422224)
Inquiries: meet@ams.org

