Spring Central Sectional Meeting, Program by Day

AMS Sectional Meeting Program by Day

Current as of Saturday, May 4, 2013 00:21:21

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

Spring Central Sectional Meeting
Iowa State University, Ames, IA
April 26-28, 2013 (Friday - Sunday)
Meeting #1090

Associate secretaries:

Georgia M. Benkart, AMS benkart@math.wisc.edu

Sunday April 28, 2013

Sunday April 28, 2013, 7:30 a.m.-12:00 p.m.
Book Sale and Exhibit
Room 305, Carver

Sunday April 28, 2013, 7:30 a.m.-12:00 p.m.
Meeting Registration
Room 305, Carver

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Algebraic and Geometric Combinatorics, III
Room 74, Carver
Organizers:
Sung Y. Song, Iowa State University sysong@iastate.edu
Paul Terwilliger, University of Wisconsin-Madison
- 8:00 a.m.
  Table Bases as Unions of Proper Closed Subsets.
  Harvey I Blau*, Department of Mathematical Sciences, Northern Illinois University
  Gang Chen, School of Mathematics and Statistics, Central China Normal University
  (1090-20-147)
- 8:30 a.m.
  The Tail Condition for Leonard Pairs.
  Edward D. Hanson*, University of Wisconsin-Madison
  (1090-05-407)
- 9:00 a.m.
  Nonexistence of certain abstract hyperovals of order 12.
  Benjamin C Cooper*, Department of Mathematics, Colorado State University
  (1090-05-308)
- 9:30 a.m.
  Non-commutative association schemes of rank $6$.
  Paul-Hermann Zieschang*, Department of Mathematics, University of Texas at Brownsville
  (1090-20-65)
- 10:00 a.m.
  $Q$-polynomial distance-regular graphs and the double affine Hecke algebra of rank one.
  Jae-Ho Lee*, University of Wisconsin-Madison
  (1090-33-93)
- 10:30 a.m.
  Spreads and Packings in PG$(3,q)$.
  Anton Betten*, Colorado State University
  (1090-05-114)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Analysis, Dynamics and Geometry In and Around Teichmuller Spaces, III
Room 118, Carver
Organizers:
Alistair Fletcher, Northern Illinois University
Vladimir Markovic, California Institute of Technology
Dragomir Saric, Queens College CUNY dragomir.saric@qc.cuny.edu
- 8:30 a.m.
  Discussion
- 9:00 a.m.
  Recent developments on the ergodicity of translation flows on flat surfaces.
  Rodrigo Trevino*, Cornell University
  (1090-37-48)
- 9:30 a.m.
  Projective structures on closed surfaces and the geometry of diffeomorphisms.
  Ferry Henrik Kwakkel*, University of Sao Paulo, Sao Paulo, Brazil
  (1090-51-343)
- 10:00 a.m.
  Induced earthquake measure map on asymptotic Teichmüller space.
  Jinhua Fan*, Department of Applied Mathematics, Nanjing University of Science and Technology
  Jun Hu, Department of Mathematics, Brooklyn College of CUNY
  (1090-30-232)
- 10:30 a.m.
  On Teichmüller metric and the length spectra of topologically infinite Riemann surfaces.
  Erina Kinjo*, Tokyo Institute of Technology, Department of Mathematical and Computing Sciences
  (1090-30-194)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Commutative Algebra and its Environs, III
Room 8, Carver
Organizers:
Olgur Celikbas, University of Missouri, Columbia
Greg Piepmeyer, University of Missouri, Columbia ggpz95@mail.missouri.edu
- 8:00 a.m.
  Resurgences: the road ahead and a look back.
  Brian Harbourne*, University of Nebraska-Lincoln
  (1090-14-245)
- 9:00 a.m.
  Codualizing Modules And Complexes.
  Sean Sather-Wagstaff, North Dakota State University
  Richard Wicklein*, North Dakota State University
  (1090-13-323)
- 9:30 a.m.
  Periodic modules over Gorenstein local rings.
  Amanda Croll*, University of Nebraska-Lincoln
  (1090-13-301)
- 10:00 a.m.
  Cohen factorizations and applications.
  Saeed Nasseh*, North Dakota State University
  Sean Sather-Wagstaff, North Dakota State University
  (1090-13-340)
- 10:30 a.m.
  $F$-pure thresholds of quasi-homogeneous polynomials.
  Daniel Heranadez, University of Minnesota
  Luis Nunez-Betancourt, University of Michigan
  Emily Witt, University of Minnesota
  Wenliang Zhang*, University of Nebraska
  (1090-13-374)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Commutative Ring Theory, III
Room 18, Carver
Organizers:
Michael Axtell, University of St. Thomas
Joe Stickles, Millikin University jstickles@millikin.edu
- 8:00 a.m.
  Length Multiset-Complete Krull Monoids.
  Paul Baginski*, Smith College
  George J Schaeffer, University of California, Los Angeles
  (1090-13-395)
- 8:30 a.m.
  Multiplicative Subsets of Atoms.
  Ashley Rand*, University of Tennessee, Knoxville
  (1090-13-316)
- 9:00 a.m.
  Prüfer domains and the projective line.
  Bruce Olberding*, New Mexico State University
  (1090-13-196)
- 9:30 a.m.
  Localizing Global Properties to Individual Maximal Ideals.
  Thomas G Lucas*, Department of Mathematics & Statistics, University of North Carolina Charlotte
  (1090-13-324)
- 10:00 a.m.
  Some near-Noetherian conditions.
  Jim Coykendall*, North Dakota State University
  Tridib Dutta, University of Pittsburgh
  (1090-13-272)
- 10:30 a.m.
  Ascent properties for derived functors.
  Sean Sather-Wagstaff*, North Dakota State University
  (1090-13-95)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Computability and Complexity in Discrete and Continuous Worlds, III
Room 290, Carver
Organizers:
Jack Lutz, Iowa State University
Tim McNicholl, Iowa State University mcnichol@iastate.edu
- 8:00 a.m.
  Combining basis theorems.
  Stephen G. Simpson*, Pennsylvania State University
  (1090-03-56)
- 8:30 a.m.
  On the Complexity of Bribery and Manipulation in Tournaments with Uncertain Information.
  Nicholas Mattei, NICTA and University of New South Wales
  Judy Goldsmith*, Dept of Computer Science, University of Kentucky
  Andrew Klapper, Dept of Computer Science, University of Kentucky
  Martin Mundhenk, Institute of Computer Science Friedrich-Schiller-Universität Jena
  (1090-68-385)
- 9:00 a.m.
  Polynomial-Time Randomness and Differentiability.
  John M. Hitchcock*, University of Wyoming
  Joshua C. Sanderlin, University of Wyoming
  (1090-68-414)
- 9:30 a.m.
  On the Computable Curves.
  Xizhong Zheng*, Arcadia University
  (1090-03-149)
- 10:00 a.m.
  Complexity and Symmetry.
  Lek-Heng Lim*, University of Chicago
  Ke Ye, University of Chicago
  (1090-15-267)
- 10:30 a.m.
  Strong separations and Kolmogorov complexity.
  W.M. Phillip Hudelson*, Pennsylvania State University
  (1090-03-91)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Computational Advances on Special Functions and Tropical Geometry, III
Room 2, Carver
Organizers:
Lubjana Beshaj, Oakland University
Emma Previato, Boston University ep@bu.edu
- 9:30 a.m.
  Algorithmic unsolvability in geometry.
  Wesley Calvert*, Southern Illinois University
  Valentina Harizanov, George Washington University
  Alexandra Shlapentokh, East Carolina University
  (1090-03-128)
- 10:00 a.m.
  Lifting techniques for polynomial systems.
  Eric Schost*, Western University
  (1090-68-429)
- 10:30 a.m.
  Heterotic/F-theory duality and lattice polarized K3 surfaces.
  Andreas Malmendier*, Colby College
  Ken Ono, Emory University
  (1090-14-376)

Sunday April 28, 2013, 8:00 a.m.-9:50 a.m.
Special Session on Control Theory and Qualitative Analysis of Partial Differential Equations, III
Room 132, Carver
Organizers:
George Avalos, University of Nebraska-Lincoln gavalos@math.unl.edu
Scott Hansen, Iowa State University
- 8:00 a.m.
  A Frequency Domain Approach for obtaining Polynominal Decay for Certain Coupled PDE Models.
  George Avalos*, University of Nebraska-Lincoln
  (1090-35-227)
- 8:30 a.m.
  Explicit Approximations of Bilinear Controls using Interpolation.
  Katherine A. Kime*, University of Nebraska Kearney
  (1090-93-80)
- 9:00 a.m.
  Stability and Regularity of an Abstract System of Coupled Hyperbolic and Parabolic System.
  Zhuangyi Liu*, Department of Mathematics and Statistics, University of Minneosta Duluth
  (1090-35-167)
- 9:30 a.m.
  Exact null-controllability of heat equation with singular specific heat.
  Scott Hansen*, Iowa State University
  Jose de Jesus Martinez, Iowa State University
  (1090-93-266)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Discrete Methods and Models in Mathematical Biology, III
Room 298, Carver
Organizers:
Dora Matache, University of Nebraska-Omaha
Stephen J. Willson, Iowa State University swillson@iastate.edu
- 8:30 a.m.
  The neural ring: an algebraic tool for analyzing neural codes.
  Carina Curto*, University of Nebraska-Lincoln
  (1090-92-315)
- 9:00 a.m.
  Encoding simplicial complexes by neural networks.
  Vladimir Itskov*, University of Nebraska-Lincoln
  Carina Curto, University of Nebraska-Lincoln
  Chad Giusti, University of Nebraska-Lincoln
  (1090-92-163)
- 9:30 a.m.
  Reverse Engineering of Regulatory Networks Using Algebraic Geometry.
  Alan Veliz-Cuba*, University of Nebraska-Lincoln
  (1090-92-05)
- 10:00 a.m.
  Abstract algebra and the logic of gene expression.
  Anna B. Romanowska, Warsaw University of Technology
  Jonathan D.H. Smith*, Iowa State University
  (1090-92-151)
- 10:30 a.m.
  Discussion

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Extremal Combinatorics, III
Room 268, Carver
Organizers:
Steve Butler, Iowa State University
Ryan Martin, Iowa State University rymartin@iastate.edu
- 9:00 a.m.
  Forbidden Families of Configurations.
  Richard P Anstee*, UBC Mathematics
  Christina Koch, UBC Mathematics
  (1090-05-55)
- 9:30 a.m.
  Turán and Ramsey Results for Boolean Algebras.
  Travis Johnston, University of South Carolina
  Linyuan Lu, University of South Carolina
  Kevin G. Milans*, West Virginia University
  (1090-05-381)
- 10:00 a.m.
  Turán Problems on Non-uniform Hypergraphs.
  Linyuan Lu*, University of South Carolina
  Travis Johnston, University of South Carolina
  (1090-05-420)
- 10:30 a.m.
  Tree-width and Dimension.
  Gwenaël Joret, Université Libre de Bruxelles, Belgium
  Piotr Micek, Jagiellonian University, Poland
  Kevin G Milans, West Virginia University
  William T Trotter, Georgia Institute of Technology
  Bartosz Walczak, Jagiellonian University, Poland
  Ruidong Wang*, Georgia Institute of Technology
  (1090-05-125)

Sunday April 28, 2013, 8:00 a.m.-9:20 a.m.
Special Session on Generalizations of Nonnegative Matrices and Their Sign Patterns, III
Room 232, Carver
Organizers:
Minerva Catral, Xavier University catralm@xavier.edu
Shaun Fallat, University of Regina
Pauline van den Driessche, University of Victoria
- 8:00 a.m.
  Factorization of matrices into matrices with prescribed zero and nonzero patterns.
  Chi-Kwong Li*, Department of Mathematics, College of William and Mary
  (1090-15-77)
- 8:30 a.m.
  On the Structure of the Set of Symmetric Matrices with the Perron-Frobenius Property.
  Pablo Tarazaga*, Texas A&M University, Corpus Christi
  (1090-15-230)
- 9:00 a.m.
  Discussion

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Geometric Elliptic and Parabolic Partial Differential Equations, III
Room 128, Carver
Organizers:
Brett Kotschwar, Arizona State University kotschwar@asu.edu
Xuan Hien Nguyen, Iowa State University
- 8:00 a.m.
  A reduction theorem for Spin(7) manifolds.
  Mihai Bailesteanu*, University of Rochester
  (1090-53-237)
- 9:00 a.m.
  Rigidity of Self-similar Solutions of Geometric Flows.
  Lu Wang*, Johns Hopkins University
  (1090-53-403)
- 10:00 a.m.
  The Zoo of Solitons for Curve Shortening in $\mathbb{R}^n$.
  Sigurd B Angenent*, Math Department, UW Madison
  (1090-35-396)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Graphs, Hypergraphs and Counting, III
Room 274, Carver
Organizers:
Eva Czabarka, University of South Carolina czabarka@math.sc.edu
Laszlo Szekely, University of South Carolina
- 8:00 a.m.
  On Erdős' unit distances problem.
  Jozsef Solymosi*, University of British Columbia
  (1090-05-281)
- 9:00 a.m.
  Bijective proofs of Jensen's identity and Mohanty-Handa's identity.
  Nicholas A. Loehr*, Virginia Tech Dept. of Math and USNA Dept. of Math
  R. Daniel Mauldin, University of North Texas Dept. of Mathematics
  (1090-05-103)
- 9:30 a.m.
  High order phase transition in random hypergraphs.
  Linyuan Lu, Department of Mathematics, University of South Carolina
  Xing Peng*, Department of Mathematics, University of California, San Diego
  (1090-05-121)
- 10:00 a.m.
  2-colorability of hypergraphs using commutative algebra.
  L. Thoma*, Department of Mathematics, University of Rhode Island
  (1090-05-33)
- 10:30 a.m.
  Chromatic Numbers of Copoint Graphs of Convex Geometries.
  Jonathan E Beagley, Department of Mathematical Sciences, George Mason University
  Walter D Morris*, Department of Mathematical Sciences, George Mason University
  (1090-05-19)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Kinetic and Hydrodynamic PDE-based Descriptions of Multi-scale Phenomena, III
Room 160, Carver
Organizers:
James Evans, Iowa State University
Hailiang Liu, Iowa State University
Eitan Tadmor, University of Maryland tadmor@cscamm.umd.edu
- 8:00 a.m.
  Relative entropy, stability of shocks for conservation laws, and applications to asymptotic limits.
  Alexis F. Vasseur*, University of Texas at Austin
  Kyudong Choi, University of Wisconsin at Madison
  Nicholas Leger, Carnegie Mellon
  (1090-35-430)
- 9:00 a.m.
  A class of nonlocal conservation laws: local wellposedness and sub-thresholds for finite time shock formation.
  Yongki Lee*, Department of Mathematics, Iowa State University
  Hailiang Liu, Department of Mathematics, Iowa State University
  (1090-35-286)
- 9:30 a.m.
  Critical thresholds on compressible Eulerian dynamics with nonlocal alignment.
  Changhui Tan*, University of Maryland
  (1090-35-392)
- 10:00 a.m.
  Compressible Navier-Stokes equations with temperature dependent dissipation.
  Ronghua Pan*, Georgia Institute of Technology
  Weizhe Zhang, Georgia Institute of Technology
  (1090-35-391)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Multi-Dimensional Dynamical Systems, III
Room 190, Carver
Organizers:
Jayadev Athreya, University of Illinois, Urbana-Champaign jathreya@illinois.edu
Jonathan Chaika, University of Chicago
Joseph Rosenblatt, University of Illinois at Urbana-Champaign
- 9:00 a.m.
  Discussion
- 9:30 a.m.
  Typical Homeomorphisms.
  Kelly B Yancey*, University of Illinois at Urbana-Champaign
  (1090-37-406)
- 10:00 a.m.
  Fixed points of nilpotent actions on surfaces.
  K. Parwani*, Eastern Illinois University
  (1090-37-257)
- 10:30 a.m.
  Fuchsian groups and generalized Bowen-Series transformations.
  Svetlana Katok, The Pennsylvania State University
  Ilie Ugarcovici*, DePaul University
  (1090-37-377)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Numerical Analysis and Scientific Computing, III
Room 150, Carver
Organizers:
Hailiang Liu, Iowa State University hliu@iastate.edu
Songting Luo, Iowa State University
James Rossmanith, Iowa State University
Jue Yan, Iowa State University
- 8:00 a.m.
  No artificial numerical viscosity: from the 1/3 rule to entropy stable approximations of Navier-Stokes and related equations.
  Eitan Tadmor*, University of Maryland
  (1090-65-169)
- 9:00 a.m.
  A New Runge-Kutta Discontinuous Galerkin Method with Conservation Constraints to Improve CFL Condition for Solving Conservation Laws.
  Zhiliang Xu, Notre Dame
  Xu-Yan Chen, Georgia Tech
  Yingjie Liu*, School of Math, Georgia Tech
  (1090-65-264)
- 9:30 a.m.
  An Efficient Rescaling Algorithm for Simulating the Evolution of Multiple Elastically Stressed Precipitates.
  Shuwang Li*, Illinois Institute of Technology
  (1090-74-221)
- 10:00 a.m.
  Discretization of Stochastic Optimal Control Problems by the $h \times p$ Version of the Stochastic Galerkin FEM.
  Jangwoon (Leo) Lee*, University of Mary Washington
  Hyung-Chun Lee, Ajou University
  (1090-65-126)
- 10:30 a.m.
  Direct Discontinuous Galerkin Methods for Dispersive Integrable Equations.
  Hailiang Liu*, Iowa State University
  (1090-65-357)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Operator Algebras and Topological Dynamics, III
Room 4, Carver
Organizers:
Benton L. Duncan, North Dakota State University benton.duncan@ndsu.edu
Justin R. Peters, Iowa State University
- 8:00 a.m.
  Simplicity of etale groupoid C*-algebras.
  Jonathan Henry Brown*, Kansas State University
  (1090-46-66)
- 9:00 a.m.
  Bimodules over Cartan Algebras in von Neumann Algebras and an Assertion of Mercer.
  Jan Cameron, Vassar College
  David R Pitts*, University of Nebraska--Lincoln
  Vrej Zarikian, U. S. Naval Academy
  (1090-47-189)
- 9:30 a.m.
  The Lattice of Bures-Closed Bimodules in Cartan Pairs.
  Adam H. Fuller*, University of Nebraska - Lincoln
  David R. Pitts, University of Nebraska - Lincoln
  (1090-47-310)
- 10:00 a.m.
  States on k-Graph C*-algebras.
  Jonathan H Brown, Kansas State University
  Gabriel Nagy, Kansas State University
  Sarah A Reznikoff*, Kansas State University
  (1090-46-415)
- 10:30 a.m.
  Subspaces of vN(G) and bimodules over maximal abelian selfadjoint algebras.
  M. Anoussis, Department of Mathematics, University of the Aegean, Samos, Greece
  A. Katavolos*, Department of Mathematics, University of Athens, Greece
  I. G. Todorov, Pure Mathematics Research Centre, Queen's University Belfast, United Kingdom
  (1090-47-131)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Partial Differential Equations, III
Room 204, Carver
Organizers:
Gary Lieberman, Iowa State University
Paul Sacks, Iowa State University psacks@iastate.edu
Mahamadi Warma, University of Puerto Rico at Rio Piedras
- 8:00 a.m.
  Finite energy function spaces on exterior regions.
  Qi Han*, Math Department, University of Houston
  Giles Auchmuty, Math Department, University of Houston
  (1090-35-16)
- 8:30 a.m.
  Regularization of steady point vortices for the ideal fluids.
  Daomin CAO*, Institute of Applied Mathematics,Chinese Academy of Sciences,P.R.China
  (1090-35-96)
- 9:00 a.m.
  Regularity criteria of N-dimensional porous media equation in terms of one partial derivative or pressure scalar field.
  Kazuo Yamazaki*, Department of Mathematics, Oklahoma State University
  (1090-35-06)
- 9:30 a.m.
  Slightly super-critical dissipative operators related to 2D Boussinesq equations.
  Lizheng Tao*, Oklahoma State University
  Durga K.C., Oklahoma State University
  Dipendra Regmi, Oklahoma State University
  Jiahong Wu, Oklahoma State University
  (1090-35-86)
- 10:00 a.m.
  Global Well-posedness for 2D Radial Schrödinger Maps into the Sphere.
  Eva Hang Koo*, University of Iowa
  Stephen Gustafson, University of British Columbia
  (1090-35-274)
- 10:30 a.m.
  A nonlinear moving-boundary parabolic-hyperbolic problem arising in blood flow modeling: a constructive existence proof.
  Suncica Canic*, University of Houston
  Boris Muha, University of Zagreb
  (1090-35-36)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Probabilistic and Multiscale Modeling Approaches in Cell and Systems Biology, III
Room 202, Carver
Organizers:
Jasmine Foo, University of Minnesota
Anastasios Matzavinos, Iowa State University tasos@iastate.edu
- 8:00 a.m.
  A delay differential equation model of combination chemotherapy targeting ovarian cancers.
  Harsh Jain*, Mathematics, Florida State University
  Alan Richardson, ISTM, Keele University, UK
  Helen Byrne, OCCAM and Computer Science, University of Oxford, UK
  (1090-92-341)
- 9:00 a.m.
  Numerical methods for chemotaxis models.
  Yekaterina Epshteyn*, University of Utah
  (1090-65-122)
- 10:00 a.m.
  The Effects of Cyclic Loading on Articular Cartilage Lesion Formation.
  Xiayi Wang, University of Iowa
  Bruce P. Ayati*, University of Iowa
  Jason M. Graham, University of Scranton
  Prem S. Ramakrishnan, University of Iowa
  James A. Martin, University of Iowa
  (1090-92-268)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Quasigroups, Loops, and Nonassociative Division Algebras, III
Room 68, Carver
Organizers:
C. E. Ealy, Jr., Western Michigan University clifton.e.ealy@wmich.edu
Benjamin Phillips, University of Michigan Dearborn
J. D. Phillips, Northern Michigan University
Petr Vojtechovsky, University of Denver
- 8:30 a.m.
  Structure Theory of CI-Groupoids of Bol-Moufang Type.
  David Failing*, Iowa State University
  (1090-08-214)
- 9:00 a.m.
  A class of loops categorically isomorphic to Bruck loops of odd order.
  Mark B. Greer*, University of Denver
  (1090-20-188)
- 9:30 a.m.
  Dihedral-like constructions of automorphic loops.
  Mouna R Aboras*, University of Denver
  (1090-20-58)
- 10:00 a.m.
  Magic squares of Lie groups.
  Tevian Dray*, Oregon State University
  John Huerta, Instituto Superior Tecnico, Lisboa
  Joshua Kincaid, Oregon State University
  Corinne A. Manogue, Oregon State University
  Aaron Wangberg, Winona State University
  Robert A. Wilson, Queen Mary, University of London
  (1090-17-400)
- 10:30 a.m.
  Loops presented by finite automata.
  Michael Kinyon*, University of Denver
  Rick M. Thomas, University of Leicester
  (1090-20-380)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Ring Theory and Noncommutative Algebra, III
Room 98, Carver
Organizers:
Victor Camillo, University of Iowa
Miodrag C. Iovanov, University of Bucharest and University of Iowa yovanov@gmail.com
- 8:00 a.m.
  Recent progress on clean and strongly clean rings.
  Alexander J. Diesl, Wellesley College
  Thomas J. Dorsey*, IDA/CCR-La Jolla
  (1090-16-425)
- 8:30 a.m.
  Quasipolar and Pseudopolar Matrix Rings.
  Alexander J Diesl*, Wellesley College
  Thomas J Dorsey, Center for Communications Research
  (1090-16-290)
- 9:00 a.m.
  Generalizations of Shoda's Theorem.
  Zak Mesyan*, University of Colorado, Colorado Springs
  (1090-16-224)
- 9:30 a.m.
  Periodic free resolutions from noncommutative matrix factorizations.
  Andrew Conner*, Wake Forest University
  Ellen Kirkman, Wake Forest University
  W. Frank Moore, Wake Forest University
  (1090-16-215)
- 10:00 a.m.
  Jacobson Pairs and Regular Elements.
  T.Y. Lam, University of California Berkeley
  Pace P. Nielsen*, Brigham Young University
  (1090-16-39)
- 10:30 a.m.
  Diophantine Sets of Representations.
  Ivo Herzog*, The Ohio State University at Lima
  Sonia L'Innocente, University of Camerino
  (1090-16-155)

Sunday April 28, 2013, 8:00 a.m.-10:50 a.m.
Special Session on Stochastic Processes with Applications to Physics and Control, III
Room 196, Carver
Organizers:
Jim Evans, Iowa State University evans@ameslab.gov
Arka Ghosh, Iowa State University
Jon Peterson, Purdue University
Alexander Roitershtein, Iowa State University
- 8:00 a.m.
  Small-time asymptotics of stopped Lévy bridges and simulation schemes with controlled bias.
  Jose E Figueroa-Lopez*, Purdue University
  Peter Tankov, Universite Paris-Diderot (Paris 7)
  (1090-60-358)
- 8:30 a.m.
  Large deviations in multi-time scale stochastic systems.
  Rohini Kumar*, Wayne State University
  Jin Feng, Kansas University
  Jean-Pierre Fouque, University of California, Santa Barbara
  (1090-60-265)
- 9:00 a.m.
  Large Deviations for Stochastic Partial Differential Equations Driven by a Poisson Random Measure.
  Amarjit Budhiraja, University of North Carolina-Chapel Hill
  Jiang Chen*, University of North Carolina-Chapel Hill
  Paul Dupuis, Lefschetz Center for Dynamical Systems, Division of Applied Mathematics, Brown University
  (1090-60-08)
- 9:30 a.m.
  Dynamic Scheduling for Markov Modulated Single-server Multiclass Queueing Systems in Heavy Traffic.
  Xin Liu*, University of Minnesota
  Arka Ghosh, Iowa State University
  Amarjit Budhiraja, University of North Carolina at Chapel Hill
  (1090-60-244)
- 10:00 a.m.
  Optimal rate for a queueing system in heavy traffic with superimposed On-Off arrivals.
  Arka P Ghosh*, Iowa State University
  (1090-60-325)
- 10:30 a.m.
  Accumulation and spread of mutations in a spatially structured population.
  Jasmine Foo*, University of Minnesota
  (1090-60-339)

Sunday April 28, 2013, 8:00 a.m.-10:20 a.m.
Special Session on Topology of 3-Manifolds, III
Room 294, Carver
Organizers:
Marion Campisi, University of Texas at Austin
Alexander Zupan, University of Texas at Austin zupan@math.utexas.edu
- 8:00 a.m.
  Almost unknotted graphs: theorems, examples, conjectures.
  Scott A. Taylor*, Colby College
  Byoungwook Jang, Colby College
  Pratap Luitel, Colby College
  Alexander Zupan, University of Texas, Austin
  (1090-57-254)
- 8:30 a.m.
  Gabai degeneracy and fractional Dehn twist coefficients.
  Rachel Roberts*, Washington University in St Louis
  William H. Kazez, University of Georgia
  (1090-57-292)
- 9:00 a.m.
  High Distance Heegaard Splittings via Dehn Twists.
  Michael Yoshizawa*, UC Santa Barbara
  (1090-57-76)
- 9:30 a.m.
  A lower bound on the Heegaard genus of amalgamated 3-manifolds.
  T F Schirmer*, Oklahoma State University
  (1090-57-311)
- 10:00 a.m.
  Farey Diagrams, simple closed curves, and multiplication in the Kauffman bracket skein algebra of a punctured torus.
  Charles Frohman*, The University of Iowa
  (1090-57-99)

Sunday April 28, 2013, 8:00 a.m.-10:20 a.m.
Special Session on Zero Forcing, Maximum Nullity/Minimum Rank, and Colin de Verdiere Graph Parameters, III
Room 205, Carver
Organizers:
Leslie Hogben, Iowa State University and American Institute of Mathematics hogben@aimath.org
Bryan Shader, University of Wyoming
- 8:00 a.m.
  Matchings and Minimum Skew Zero Forcing Sets of Some Multipartite Graphs.
  Luz M. DeAlba*, Drake University
  (1090-05-162)
- 8:30 a.m.
  New perspectives on Rosenfeld's theorem.
  Louis Deaett*, Quinnipiac University
  (1090-15-185)
- 9:00 a.m.
  Colin de Verdière-type invariants for signed graphs and odd-$K_4$- and odd-$K^2_3$-free signed graphs.
  Hein van der Holst*, Georgia State University, Atlanta, Georgia
  Marina Arav, Georgia State University, Atlanta, Georgia
  Frank Hall, Georgia State University, Atlanta, Georgia
  Zhongshan Li, Georgia State University, Atlanta, Georgia
  (1090-05-152)
- 9:30 a.m.
  Colin de Verdière Parameters of Chordal Graphs.
  Shaun M Fallat*, University of Regina
  Lon H Mitchell, American Mathematical Society
  (1090-15-109)
- 10:00 a.m.
  Getting something for nothing (using transversality, linear algebra and combinatorics).
  Bryan L Shader*, University of Wyoming
  (1090-15-204)

Sunday April 28, 2013, 8:30 a.m.-10:55 a.m.
Contributed Paper Session I
Room 124, Carver
- 8:30 a.m.
  On computability and complexity of Pierce and Engel expansions.
  Iraj Kalantari, Western Illinois University
  Mojtaba Moniri*, Western Illinois University
  (1090-03-432)
- 8:45 a.m.
  Sums and products of smooth numbers.
  David J. Covert*, University of Missouri - Saint Louis
  (1090-11-246)
- 9:00 a.m.
  On $(i,j,k)$-coloring of sparse graphs.
  Andre Raspaud*, LaBRI, Bordeaux University, 351 cours de la Liberation, 33450 TALENCE cedex, FRANCE
  (1090-05-53)
- 9:15 a.m.
  Discussion
- 9:30 a.m.
  (0,1)-improper coloring of sparse graph.
  Jaehoon Kim*, University of Illinois at Urbana-Champaign
  Alexandr V Kostochka, University of Illinois at Urbana-Champaign
  Xuding Zhu, National Sun Yat-sen University
  (1090-05-157)
- 9:45 a.m.
  Local Clique Covering of Graphs.
  Ramin Javadi, Isfahan University of Technology
  Zeinab Maleki*, Isfahan University of Technology and University of Illinois Urbana-Champaign
  Behnaz Omoomi, Isfahan University of Technology
  (1090-05-247)
- 10:00 a.m.
  Large incidence-free sets in geometries.
  Stefaan De Winter*, Michigan Technological University
  (1090-05-322)
- 10:15 a.m.
  Edge exchanges and realizations of $k$-graphic sequences.
  Sarah Behrens*, University of Nebraska-Lincoln
  Catherine Erbes, University of Colorado Denver
  Michael Ferrara, University of Colorado Denver
  Stephen Hartke, University of Nebraska-Lincoln
  Ben Reiniger, University of Illinois Urbana-Champaign
  Hannah Spinoza, University of Illinois Urbana-Champaign
  Charles Tomlinson, University of Nebraska-Lincoln
  (1090-05-422)
- 10:30 a.m.
  Lower Bound Techniques for Radio Numbers of Trees.
  Katherine Benson*, The University of Iowa
  (1090-05-102)
- 10:45 a.m.
  Positive semidefinite maximum nullity and zero forcing number.
  Travis Peters*, Culver-Stockton College
  (1090-15-35)

Sunday April 28, 2013, 11:05 a.m.-11:55 a.m.
Invited Address
Differentiability of Lipschitz functions and tangents of sets.
Room 1, Carver
Marianna Csörnyei*, University of Chicago
(1090-28-02)

Sunday April 28, 2013, 1:30 p.m.-2:20 p.m.
Invited Address
The algebraic structure of perturbative quantum field theory.
Room 1, Carver
Kevin Costello*, Northwestern University
(1090-01-01)

Sunday April 28, 2013, 2:30 p.m.-4:50 p.m.
Special Session on Algebraic and Geometric Combinatorics, IV
Room 74, Carver
Organizers:
Sung Y. Song, Iowa State University sysong@iastate.edu
Paul Terwilliger, University of Wisconsin-Madison
- 2:30 p.m.
  A characterization of commutative standard table algebras with at most one nontrivial multiplicity.
  Angela L. Antonou*, Northern Illinois University
  (1090-20-200)
- 3:00 p.m.
  Totally bipartite Leonard pairs and Leonard triples.
  George M. F. Brown*, University of Wisconsin---Stout
  (1090-05-354)
- 3:30 p.m.
  Functors from Association Schemes.
  Christopher P French*, Grinnell College
  (1090-20-213)
- 4:00 p.m.
  Schur indices of the rational adjacency algebras of coherent configurations.
  Allen Herman*, University of Regina
  (1090-16-137)
- 4:30 p.m.
  Toric partial orders.
  Mike Develin, Menlo Park, CA
  Matthew Macauley*, Clemson University
  Victor Reiner, University of Minnesota
  (1090-05-388)

Sunday April 28, 2013, 2:30 p.m.-4:20 p.m.
Special Session on Analysis, Dynamics and Geometry In and Around Teichmuller Spaces, IV
Room 118, Carver
Organizers:
Alistair Fletcher, Northern Illinois University
Vladimir Markovic, California Institute of Technology
Dragomir Saric, Queens College CUNY dragomir.saric@qc.cuny.edu
- 2:30 p.m.
  Extremal metrics for extremal length and modulus of measures.
  Matthew Badger*, Stony Brook University
  (1090-49-79)
- 3:00 p.m.
  Quasiconformal Motion.
  Yunping Jiang, CUNY, Graduate Center and Queens College
  Sudeb Mitra, CUNY, Graduate Center and Queens College
  Hiroshige Shiga, Tokyo Institute of Technology
  Zhe Wang*, CUNY, Bronx Community College
  (1090-30-318)
- 3:30 p.m.
  Entropy rigidity in coarse geometry.
  Kyle E. Kinneberg*, UCLA
  (1090-51-90)
- 4:00 p.m.
  Expansion and compression principles in quasiconformal mapping theory.
  Christopher J. Bishop, Stony Brook University
  Hrant Hakobyan*, Kansas State University
  (1090-30-412)

Sunday April 28, 2013, 2:30 p.m.-3:50 p.m.
Special Session on Commutative Ring Theory, IV
Room 18, Carver
Organizers:
Michael Axtell, University of St. Thomas
Joe Stickles, Millikin University jstickles@millikin.edu
- 2:30 p.m.
  An atomic domain that is not a comaximal factorization domain.
  Jason Robert Juett*, University of Iowa
  (1090-13-334)
- 3:00 p.m.
  $\tau$-Factorization in Commutative Rings with Zero-Divisors.
  Christopher Park Mooney*, The University of Iowa
  (1090-13-89)
- 3:30 p.m.
  Generalized Integer Factorizations.
  Alina Florescu*, The University of Iowa
  (1090-13-434)

Sunday April 28, 2013, 2:30 p.m.-4:20 p.m.
Special Session on Computability and Complexity in Discrete and Continuous Worlds, IV
Room 290, Carver
Organizers:
Jack Lutz, Iowa State University
Tim McNicholl, Iowa State University mcnichol@iastate.edu
- 2:30 p.m.
  Diagonally noncomputable functions and bi-immunity.
  Carl G. Jockusch*, University of Illinois at Urbana-Champaign
  Andrew E. M. Lewis, University of Leeds
  (1090-03-156)
- 3:00 p.m.
  On the Space Complexity of the Graph Reachability Problem.
  Vinodchandran N Variyam*, University of Nebraska-Lincoln
  (1090-68-394)
- 3:30 p.m.
  Strongly minimal theories with computable models.
  Uri Andrews, University of Wisconsin-Madison
  Julia F. Knight*, University of Notre Dame
  (1090-03-88)
- 4:00 p.m.
  Effective dimension in general metric spaces.
  Elvira Mayordomo*, Universidad de Zaragoza, Spain
  (1090-68-171)

Sunday April 28, 2013, 2:30 p.m.-4:20 p.m.
Special Session on Extremal Combinatorics, IV
Room 268, Carver
Organizers:
Steve Butler, Iowa State University
Ryan Martin, Iowa State University rymartin@iastate.edu
- 2:30 p.m.
  Reversal Ratio and Linear Extension Diameter.
  Graham Brightwell, London School of Economics and Political Science
  Mitchel T. Keller*, University of Nebraska-Lincoln
  (1090-06-384)
- 3:00 p.m.
  Edge-disjoint rainbow spanning tees in complete graphs.
  James M Carraher*, University of Nebraska--Lincoln
  Stephen G Hartke, University of Nebraska--Lincoln
  Paul Horn, Harvard University
  (1090-05-111)
- 3:30 p.m.
  Hypergraph Coloring with Hyperspectra.
  Franklin H. J. Kenter*, University of California, San Diego
  Michael Tait, University of California, San Diego
  (1090-15-332)
- 4:00 p.m.
  Sum list coloring, the sum choice number, and sc-greedy graphs.
  Michelle A Lastrina*, Dickinson College
  Michael Young, Iowa State University
  (1090-05-284)

Sunday April 28, 2013, 2:30 p.m.-4:20 p.m.
Special Session on Kinetic and Hydrodynamic PDE-based Descriptions of Multi-scale Phenomena, IV
Room 160, Carver
Organizers:
James Evans, Iowa State University
Hailiang Liu, Iowa State University
Eitan Tadmor, University of Maryland tadmor@cscamm.umd.edu
- 2:30 p.m.
  Inability of Continuum Theory to Evaluate the Elastic Energy of Alloys.
  Peter Smereka*, Dept. of Mathematics, University of Michigan
  Arvind Baskaran, Dept. of Mathematics, University of California, Irvine
  Christian Ratsch, IPAM, University of California, Los Angeles
  (1090-74-94)
- 3:30 p.m.
  Gaussian Beam methods for the Helmholtz equation.
  Hailiang Liu*, Iowa State University
  (1090-35-356)

Sunday April 28, 2013, 2:30 p.m.-3:50 p.m.
Special Session on Numerical Analysis and Scientific Computing, IV
Room 150, Carver
Organizers:
Hailiang Liu, Iowa State University hliu@iastate.edu
Songting Luo, Iowa State University
James Rossmanith, Iowa State University
Jue Yan, Iowa State University
- 2:30 p.m.
  High-order asymptotic preserving discontinuous Galerkin schemes to discrete-velocity kinetic equations in a diffusive regime.
  Juhi Jang, UC Riverside
  Fengyan Li, RPI
  Jingmei Qiu*, University of Houston
  Tao Xiong, University of Houston
  (1090-65-57)
- 3:00 p.m.
  Discontinuous Galerkin Constrained Transport Schemes for Ideal Magnetohydrodynamics in Multiple Dimensions.
  James Rossmanith*, Iowa State University
  (1090-65-238)
- 3:30 p.m.
  On node distributions for interpolation and spectral methods.
  Nguyen Hoang*, Department of Mathematics, The University of Oklahoma
  (1090-65-22)

Sunday April 28, 2013, 2:30 p.m.-3:20 p.m.
Special Session on Operator Algebras and Topological Dynamics, IV
Room 4, Carver
Organizers:
Benton L. Duncan, North Dakota State University benton.duncan@ndsu.edu
Justin R. Peters, Iowa State University
- 2:30 p.m.
  Fourier Series and Cantor Sets.
  Eric Weber*, Iowa State University
  Dorin Dutkay, University of Central Florida
  Deguang Han, University of Central Florida
  (1090-42-309)
- 3:00 p.m.
  Quasinormal Toeplitz operators with matrix-valued rational symbols.
  Raul E. Curto*, University of Iowa
  (1090-47-192)

Sunday April 28, 2013, 2:30 p.m.-4:20 p.m.
Special Session on Partial Differential Equations, IV
Room 204, Carver
Organizers:
Gary Lieberman, Iowa State University
Paul Sacks, Iowa State University psacks@iastate.edu
Mahamadi Warma, University of Puerto Rico at Rio Piedras
- 2:30 p.m.
  The Mean Value Theorem for Divergence Form Elliptic Operators.
  Ivan Blank, Kansas State University
  Zheng Hao*, Kansas State University
  (1090-35-70)
- 3:00 p.m.
  Solvability of linear local and nonlocal Robin problems over $C(\overline{\Omega})$.
  Alejandro Velez-Santiago*, University of Puerto Rico at Humacao
  (1090-35-146)
- 3:30 p.m.
  Error Estimates of the Bloch Band-Based Gaussian Beam Superposition for the Schrödinger Equation.
  Maksym Pryporov*, Iowa State University
  Hailiang Liu, Iowa State University
  (1090-35-321)
- 4:00 p.m.
  Liouville Theorems for positive solutions in a cylinder for uniformly elliptic operators.
  Lihe Wang*, The University of Iowa
  (1090-35-239)

Sunday April 28, 2013, 2:30 p.m.-4:20 p.m.
Special Session on Probabilistic and Multiscale Modeling Approaches in Cell and Systems Biology, IV
Room 202, Carver
Organizers:
Jasmine Foo, University of Minnesota
Anastasios Matzavinos, Iowa State University tasos@iastate.edu
- 2:30 p.m.
  Isolating intrinsic noise sources in a stochastic genetic switch.
  Jay M Newby*, Mathematical Biosciences Institute, Ohio State University
  (1090-92-404)
- 3:30 p.m.
  Multiscale approximations in stochastic biochemical networks.
  Hye-Won Kang*, Mathematical Biosciences Institute, Ohio State University
  (1090-92-337)

Sunday April 28, 2013, 2:30 p.m.-4:20 p.m.
Special Session on Quasigroups, Loops, and Nonassociative Division Algebras, IV
Room 68, Carver
Organizers:
C. E. Ealy, Jr., Western Michigan University clifton.e.ealy@wmich.edu
Benjamin Phillips, University of Michigan Dearborn
J. D. Phillips, Northern Michigan University
Petr Vojtechovsky, University of Denver
- 2:30 p.m.
  On Computable loops: computable Paige loops and computable loops given by transversals in Fn, the free group on n generators.
  Clifton E. Ealy Jr.*, Department of Mathematics, Western Michigan University
  (1090-20-410)
- 3:00 p.m.
  Special Majorana algebras and $3$-transposition groups.
  Jonathan I Hall*, Department of Mathematics, Michigan State University
  (1090-20-219)
- 3:30 p.m.
  A collection of algebras arising from a loop or a quasigroup.
  Kenneth W Johnson*, Penn state Abington
  (1090-20-387)
- 4:00 p.m.
  Digroups and diquasigroups.
  Jonathan D.H. Smith*, Iowa State University
  (1090-20-153)

Sunday April 28, 2013, 2:30 p.m.-4:20 p.m.
Special Session on Stochastic Processes with Applications to Physics and Control, IV
Room 196, Carver
Organizers:
Jim Evans, Iowa State University evans@ameslab.gov
Arka Ghosh, Iowa State University
Jon Peterson, Purdue University
Alexander Roitershtein, Iowa State University
- 2:30 p.m.
  Wave and droplet solutions for a spatial epidemic model exhibiting a discontinuous transition to an all-healthy state.
  Chi-Jen Wang*, Ames Laboratory-USDOE, Departments of Mathematics, Iowa State University
  Da-Jiang Liu, Ames Laboratory-USDOE
  James W. Evans, Ames Laboratory-USDOE, Departments of Mathematics and Physics & Astronomy, Iowa State University
  (1090-60-307)
- 3:00 p.m.
  Extraordinary variability and sharp transitions in a maximally frustrated dynamic network.
  Wenjia Liu*, Department of Physics, Virginia Tech and Department of Physics and Astronomy, Iowa State University
  Beate Schmittmann, Department of Physics, Virginia Tech and Department of Physics and Astronomy, Iowa State University
  R. K. P. Zia, Department of Physics, Virginia Tech and Department of Physics and Astronomy, Iowa State University
  (1090-60-124)
- 3:30 p.m.
  Fluctuations and 1D decay during coarsening in 2D anisotropic systems.
  Yong Han*, Department of Physics and Astronomy, Iowa State University
  Selena M. Russell, Department of Chemistry, Iowa State Unversity
  Patricia A. Thiel, Departments of Chemistry, and Materials Science & Engineering, Iowa State University; Ames Laboratory - USDOE
  James W. Evans, Department of Physics and Astronomy, Iowa State University; Ames Laboratory - USDOE
  (1090-60-223)
- 4:00 p.m.
  Ontological models for quantum theory: some recent perspectives.
  Raffaele Romano*, Iowa State University, Department of Mathematics
  (1090-81-07)

Sunday April 28, 2013, 2:30 p.m.-4:20 p.m.
Special Session on Topology of 3-Manifolds, IV
Room 294, Carver
Organizers:
Marion Campisi, University of Texas at Austin
Alexander Zupan, University of Texas at Austin zupan@math.utexas.edu
- 2:30 p.m.
  Cutting Arcs and Band Surgeries in Fiber Surfaces.
  Dorothy Buck, Imperial College London
  Kai Ishihara, Yamaguchi University
  Matt Rathbun*, Imperial College London
  Koya Shimokawa, Saitama University
  (1090-57-179)
- 3:00 p.m.
  Cosmetic crossings and twisting operations in knots.
  Cheryl Balm*, Michigan State University
  Effie Kalfagianni, Michigan State University
  (1090-57-172)
- 3:30 p.m.
  How many hyperbolic 3-manifolds can have the same volume?
  Christian R. Millichap*, Temple University
  (1090-57-138)
- 4:00 p.m.
  Invariants for some everywhere wild knots.
  Ollie Nanyes*, Bradley University
  (1090-57-181)

Sunday April 28, 2013, 2:30 p.m.-3:55 p.m.
Contributed Paper Session II
Room 124, Carver
- 2:30 p.m.
  Graded Primary Submodules Over Multiplication Modules.
  Malik Bataineh*, Jordan University of Science and Technology. Irbid - Jordan
  Ala' Khazaaleh, Jordan University of Science and Technology. Irbid - Jordan
  (1090-13-150)
- 2:45 p.m.
  Embedded annuli and Jones' conjecture.
  Douglas J LaFountain*, Western Illinois University
  William W Menasco, University at Buffalo
  (1090-57-226)
- 3:00 p.m.
  Weighted Composition Operators between Weighted Bergman and $S^{p}$ Spaces.
  Waleed K. Al-Rawashdeh*, Montana Tech
  (1090-46-158)
- 3:15 p.m.
  Resonant instability and nonlinear wave interactions in electrically forced jets.
  Saulo Orizaga*, Iowa State University
  Lisheng Hou, Iowa State University
  Daniel N RIahi, University of Illinois Urbana Champaign, University of Texas Pan-American
  (1090-76-439)
- 3:30 p.m.
  Exact Lie algebraic conditions for the indirect controllability of quantum mechanical systems.
  Francesca Albertini, Dipartimento di Matematica Pura ed Applicata, Universita' di Padova, Italy
  Domenico D'Alessandro*, Department of Mathematics, Iowa State University
  Raffaele Romano, Department of Mathematics, Iowa State University
  (1090-93-421)
- 3:45 p.m.
  Geometric Figures as Sets of Parallel, Convergent and Divergent Plane Surfaces.
  Stewart Ernest Brekke*, none
  (1090-00-42)

Inquiries: meet@ams.org

American Mathematical Society

Meetings

AMS Sectional Meeting Program by Day

Spring Central Sectional Meeting
Iowa State University, Ames, IA
April 26-28, 2013 (Friday - Sunday)
Meeting #1090

Sunday April 28, 2013

Quick Links

American Mathematical Society

Meetings

AMS Sectional Meeting Program by Day

Spring Central Sectional Meeting Iowa State University, Ames, IA April 26-28, 2013 (Friday - Sunday) Meeting #1090

Sunday April 28, 2013

Quick Links

Spring Central Sectional Meeting
Iowa State University, Ames, IA
April 26-28, 2013 (Friday - Sunday)
Meeting #1090