AMS Sectional Meeting Full Program
Current as of Sunday, April 18, 2010 21:23:43
Inquiries: meet@ams.org
2010 Spring Central Section Meeting
St. Paul, MN, April 1011, 2010 (Saturday  Sunday)
Meeting #1058
Associate secretaries: Georgia Benkart, AMS benkart@math.wisc.edu
Saturday April 10, 2010

Saturday April 10, 2010, 7:30 a.m.4:00 p.m.
Meeting Registration
Lobby, Olin Rice Hall 
Saturday April 10, 2010, 7:30 a.m.4:00 p.m.
Exhibit and Book Sale
Lobby, Olin Rice Hall 
Saturday April 10, 2010, 8:30 a.m.11:20 a.m.
Special Session on Differential Equations and Applications, I
Room 009, Old Main
Organizers:
Nicolai Tarfulea, Purdue University Calumet tarfulea@calumet.purdue.edu
Catalin Turc, Case Western Reserve University catalin.turc@case.edu

8:30 a.m.
An Inverse Random Source Problem for the Helmholtz Equation in One Dimension.
Gang Bao, Department of Mathematics, Michigan State University, East Lansing, MI 48824
ShuiNee Chow, School of Mathematics, Georgia Institute of Technology, Atlanta, GA 30332
Peijun Li*, Department of Mathematics, Purdue University, West Lafayette, IN 47907
Haomin Zhou, School of Mathematics, Georgia Institute of Technology, Atlanta, GA 30332
(105878129) 
9:00 a.m.
The Interior Transmission Problem in Acoustics.
Peter B Monk*, University of Delaware
(105865252) 
9:30 a.m.
Analysis of transmission and mixed boundary value problems with applications to the Finite Element Method.
Hengguang Li, Syracuse University
Anna Mazzucato, Pennsylvania State University
Victor Nistor*, Pennsylvania State University
(105865204) 
10:00 a.m.
Some Recent Developments in Particle Methods.
Robert Krasny*, University of Michigan
Hualong Feng, Nanjing University of Science and Technology
Leon Kaganovskiy, New College of Florida
Lei Wang, University of Michigan
(10586553) 
10:30 a.m.
A New SpectralGalerkin Method for HighDimensional PDEs.
Jie Shen*, Purdue University
(105865299) 
11:00 a.m.
Exponential convergence of $hp$version DG methods for linear elliptic PDEs in three dimensions.
Dominik M Schoetzau*, University of British Columbia
(10586589)

8:30 a.m.

Saturday April 10, 2010, 8:30 a.m.11:20 a.m.
Special Session on Quantum Invariants of 3manifolds and Modular Categories, I
Room 226, Humanities Building
Organizers:
Thang Le, Georgia Institute of Technology letu@math.gatech.edu
Eric Rowell, Texas A&M University rowell@math.tamu.edu
Vladimir Touraev, Indiana University vtouraev@indiana.edu

8:30 a.m.
Fusion categories in terms of graphs and relations.
Hendryk Pfeiffer*, The University of British Columbia,
(105820113) 
9:00 a.m.
How to recognize $U_q(\mathfrak{g}_2)$ or $S_t$.
Noah J Snyder*, Columbia University
(105817228) 
9:30 a.m.
Tensor functors on a certain category constructed from spherical categories.
Marta Asaeda*, Univ of California, Riverside
(105857273) 
10:00 a.m.
TuraevViro Invariants as an Extended TQFT.
Alexander Kirillov, Jr, Stony Brook University
Benjamin Balsam*, Stony Brook University
(105881254) 
10:30 a.m.
Second Quantization of Categorical Quantum Mechanics.
Spencer D Stirling*, University of Utah
YongShi Wu, University of Utah
(105881236) 
11:00 a.m.
Some properties of quantum representations of mapping class groups.
Jens Fjelstad*, Karlstad University/Department of Physics
(105818222)

8:30 a.m.

Saturday April 10, 2010, 8:30 a.m.11:20 a.m.
Special Session on Matrices and Graphs, I
Room 100, Olin Rice Hall
Organizers:
Luz M. DeAlba, Drake University luz.dealba@drake.edu
Adam Berliner, St. Olaf College berliner@stolaf.edu
Leslie Hogben, Iowa State University lhogben@iastate.edu
InJae Kim, Minnesota State University injae.kim@mnsu.edu

8:30 a.m.
Progress on the Graph Complement Conjecture.
Shaun M Fallat*, University of Regina
(105815115) 
9:00 a.m.
Minimum semidefinite rank and the Heawood graph.
Louis A Deaett*, University of Victoria
(105815210) 
9:30 a.m.
Lower Bounds in Minimum Rank Problems.
Sivaram K. Narayan*, Central Michigan University
(105815163) 
10:00 a.m.
Minimum Semidefinite Rank of Outerplanar Graphs.
Francesco Barioli, University of Tennessee at Chattanooga
Shaun M Fallat, University of Regina
Lon H Mitchell*, Virginia Commonwealth University
Sivaram K Narayan, Central Michigan University
(105815174) 
10:30 a.m.
Minimum Rank of Outerplanar Graphs.
Mark Kempton*, Brigham Young University
(105815245) 
11:00 a.m.
The Minimum Rank Problem for Outerplanar Graphs.
John Sinkovic*, Brigham Young University
Mark Kempton, Brigham Young University
(105815285)

8:30 a.m.

Saturday April 10, 2010, 9:00 a.m.11:20 a.m.
Special Session on Physical Knotting and Linking and its Applications, I
Room 213, Humanities Building
Organizers:
Eric Rawdon, University of St. Thomas ejrawdon@stthomas.edu
Yuanan Diao, University of North Carolina at Charlotte yuanandiao@uncc.edu
Claus Ernst, Western Kentucky University claus.ernst@wku.edu

9:00 a.m.
Are large codimension 2 spheres knotted with high probability?
De Witt Sumners*, Florida State University
(105857111) 
9:30 a.m.
Knotted 2spheres in tubes in $Z^4$.
Stu Whittington*, University of Toronto
(105857101) 
10:00 a.m.
Knotting statistics after a local strand passage in selfavoiding polygons on $\mathbb{Z}^3$.
Chris Soteros*, University of Saskatchewan
Michael Szafron, University of Saskatchewan
(105882262) 
10:30 a.m.
Mechanics and Energetics of DNA Loops in Complex Nucleoprotein Assemblies.
Stephen D Levene*, University of Texas at Dallas
(105892211) 
11:00 a.m.
Laundry Embedded Surfaces and Protein Folding.
Victor A Nicholson*, Kent State University
(105857243)

9:00 a.m.

Saturday April 10, 2010, 9:00 a.m.11:20 a.m.
Special Session on Hecke Algebras and Deformations in Geometry and Topology, I
Room 250, Olin Rice Hall
Organizers:
Matthew Douglass, University of North Texas douglass@unt.edu
Anne Shepler, University of North Texas ashepler@unt.edu

9:00 a.m.
An application of the Hecke algebras of permutation representations to representation theory.
Shigeo Koshitani*, Dept of Mathematics, Graduate School of Science, Chiba University, Japan
(10582278) 
9:30 a.m.
Hecke Algebras and Markov traces.
Rosa C Orellana*, Dartmouth College
(105816271) 
10:00 a.m.
A LittlewoodRichardson rule for Macdonald polynomials.
Martha Yip*, UWMadison
(105805199) 
10:30 a.m.
Motzkin Paths and Representation Theory.
Georgia Benkart*, University of WisconsinMadison
Tom Halverson, Macalester College
(10580559) 
11:00 a.m.
Twisted symplectic reflection algebras.
Tatyana S Chmutova*, University of Michigan
(105816177)

9:00 a.m.

Saturday April 10, 2010, 9:00 a.m.11:20 a.m.
Special Session on Pattern Formation in Biological Systems, I
Room 001, Old Main
Organizers:
Magdalena Skolarska, University of St. Thomas mastolarska@stthomas.edu
Chad Topaz, Macalester College ctopaz@macalester.edu

9:00 a.m.
Locust swarms: Discrete models, homogenization, and variational minimization.
Chad M. Topaz*, Dept. of Mathematics, Statistics, and Computer Science, Macalester College
Andrew J. Bernoff, Dept. of Mathematics, Harvey Mudd College
Sheldon Logan, Baskin School of Engineering, University of California at Santa Cruz
Wyatt Toolson, The Brattle Group
(105892235) 
9:30 a.m.
Asymptotic dynamics of attractiverepulsive swarms.
Andrew J. Bernoff*, Dept. of Mathematics, Harvey Mudd College
Andrew J. Leverentz, Dept. of Mathematics, Harvey Mudd College
Chad M. Topaz, Dept. of Mathematics and Computer Science, Macalester College
(105837279) 
10:00 a.m.
Two dimensional swarming patterns: from discrete to continuum descriptions.
Maria R D'Orsogna*, California State University at Northridge
(105892140) 
10:30 a.m.
The Volcano Effect in Bacterial Chemotaxis.
Paul A Milewski*, UWMadison, Mathematics
Julie Simons, UWMadison, Mathematics
(105892244) 
11:00 a.m.
Mathematical models of pattern formation in baterium Proteus mirabilis colonies.
chuan xue*, Mathematical Biosciences Institute
(10589251)

9:00 a.m.

Saturday April 10, 2010, 9:00 a.m.11:20 a.m.
Special Session on Fractals, Convolution Measures, and Frames, I
Room 112, Humanities Building
Organizers:
Keri Kornelson, University of Oklahoma kkornelson@math.ou.edu
Karen Shuman, Grinnell College shumank@math.grinnell.edu

8:30 a.m.
Identifying a Basis in a Frame.
Dominic Donald Kramer*, Iowa State University
(105846282) 
9:00 a.m.
Exponential Frames and Bases on the Cantor3 set.
Eric S Weber*, Iowa State University
(105842205) 
9:30 a.m.
Orthogonal harmonic analysis of selfsimilar measures.
Palle E. T. Jorgensen*, University of Iowa
(10584248) 
10:00 a.m.
Fourier frames on fractal measures.
Dorin Ervin Dutkay*, University of Central Florida
(10584227) 
10:30 a.m.
Slanted matrices, Banach frames and sampling.
Akram Aldroubi*, Vanderbilt University
Ilya Krishtal, Northern Illinois University, DeKalb
(10584791) 
11:00 a.m.
Frame multipliers and commutative Banach algebras.
Fumiko Futamura*, Southwestern University
(105842253)

8:30 a.m.

Saturday April 10, 2010, 9:00 a.m.11:20 a.m.
Special Session on Mathematical Developments in Cell and Systems Biology, I
Room 002, Old Main
Organizers:
Anastasios Matzavinos, Iowa State University tasos@iastate.edu
Nicoleta Eugenia Tarfulea, Purdue University Calumet ntarfule@calumet.purdue.edu

9:00 a.m.
Multiscale analysis of chemical reaction networks.
Hans G Othmer*, School of Mathematics, University of Minnesota
(105892268) 
10:00 a.m.
The maximal compartment size in stochastic modeling of chemical reactiondiffusion networks.
Hye Won Kang*, University of Minnesota/School of Mathematics
Likun Zheng, University of Minnesota/School of Mathematics
Hans Othmer, University of Minnesota/School of Mathematics
(105892195) 
10:30 a.m.
Numerical Solution of Stochastic Partial Differential Equations using WienerIto Chaos Expansions.
Fernando MirandaMendoza*, Department of Mathematics, Iowa State University
(105865237) 
11:00 a.m.
A model of fibroblast motility with substrate rigidity sensing.
Maria E. Gracheva*, Department of Physics, Clarkson University
Irina V. Dokukina, Department of Physics, Clarkson University
(10589287)

9:00 a.m.

Saturday April 10, 2010, 9:00 a.m.11:20 a.m.
Special Session on Applications of a Geometric Approach to Chaotic Dynamics, I
Room 010, Old Main
Organizers:
Evelyn Sander, George Mason University esander@gmu.edu
Judy Kennedy, Lamar University kennedy9905@gmail.com
James Yorke, University of Maryland yorke@umd.edu

9:00 a.m.
The Topology of Tank Stirring.
Barry A. Peratt*, Winona State University
Judy A. Kennedy, Lamar University
(105854160) 
9:30 a.m.
Finitetoone Maps into Euclidean Manifolds and Spaces with Disjoint Disks Properties.
Alex Karasev, Nipissing University
Murat Tuncali*, Nipissing University
Vesko Valov, Nipissing University
(105854134) 
10:00 a.m.
Chaotic Sets and Chaos for a Class of Differential Inclusions that Arise in Economic Models.
David R Stockman*, University of Delaware
Brian E Raines, Baylor University
(105837135) 
10:30 a.m.
Factor maps and chaos.
Piotr Oprocha*, Universidad de Murcia, Spain
Paweł Wilczyński, Jagiellonian University, Poland
(10583730) 
11:00 a.m.
The Dynamics of Nucleation in Stochastic CahnMorral Systems.
Jonathan P. Desi, UMBC
Hanein H. Edrees, George Mason University
Joseph J. Price, George Mason University
Evelyn Sander*, George Mason University
Thomas Wanner, George Mason University
(105835145)

9:00 a.m.

Saturday April 10, 2010, 9:00 a.m.11:20 a.m.
Special Session on Probabilistic and Extremal Combinatorics, I
Room 150, Olin Rice Hall
Organizers:
Ryan Martin, Iowa State University rymartin@iastate.edu
Maria Axenovich, Iowa State University axenovic@iastate.edu

9:00 a.m.
On Saturated Graphs.
Ronald J. Gould*, Emory University
(10580572) 
9:30 a.m.
Stability results on covering of triangles by edges.
P. Haxell, University of Waterloo
A. Kostochka*, University of Illinois at UrbanaChampaign
S. Thomasse, Universite Montpellier II
(105805196) 
10:00 a.m.
Extremal trees for homomorphism enumeration.
A. Jamie Radcliffe*, University of NebraskaLincoln
Andrew Ray, University of NebraskaLincoln
(105805119) 
10:30 a.m.
Covering complete $r$graphs with complete $r$partite $r$graphs.
André Kündgen*, California State University San Marcos
Sebastian Cioabă, University of Delaware
Craig Timmons, University of California San Diego
(105805267) 
11:00 a.m.
Decomposition of graphs into given sample graphs.
Zoltan Furedi*, University of Illinois at UrbanaChampaign
(105805269)

9:00 a.m.

Saturday April 10, 2010, 9:00 a.m.11:20 a.m.
Special Session on Combinatorial Representation Theory, I
Room 241, Olin Rice Hall
Organizers:
Tom Halverson, Macalester College halverson@macalester.edu
Victor Reiner, University of Minnesota reiner@math.umn.edu

9:00 a.m.
Hyperspecies and hyperoperads.
Marcelo Aguiar*, Texas A&M University
Swapneel Mahajan, Indian Institute of Technology, Mumbai
(105805180) 
9:30 a.m.
A simple bijection between alternating sign matrices with no $1$'s and descending plane partitions with no special parts.
Jessica Striker*, Minneapolis, MN
(105805209) 
10:00 a.m.
Cyclic sieving and Eulerian quasisymmetric functions.
Bruce Sagan, Michigan State University
John Shareshian*, Washington University
Michelle Wachs, University of Miami
(105805223) 
10:30 a.m.
On the algebra and combinatorics of $q,t$Catalan numbers.
Lee Kyungyong, Purdue University
Li Li*, University of Illinois at UrbanaChampaign
(105805178) 
11:00 a.m.
Crystal graphs and dual equivalence graphs.
Sami Assaf*, MIT
(105805191)

9:00 a.m.

Saturday April 10, 2010, 9:00 a.m.11:20 a.m.
Special Session on Universal Algebra and Order, I
Room 301, Olin Rice Hall
Organizers:
Jeffrey Olson, Norwich University jolson@norwich.edu
Jeremy Alm, Illinois College alm.academic@gmail.com
Kristi Meyer, Wisconsin Lutheran College kristi.meyer@wlc.edu
Japheth Wood, Bard College jwood@bard.edu

9:00 a.m.
Algebraic Linear Orderings.
Stephen L Bloom*, Stevens Institute of Technology
Zoltan Esik, University of Szeged
(10580618) 
9:30 a.m.
Categorical terms for congruencemodularity.
Zurab Janelidze*, Stellenbosch University, South Africa
(10580814) 
10:00 a.m.
Portraits of Kuratowski monoid orbits.
Fred E.J. Linton*, Wesleyan Univ. Math/CS (Emeritus)
(10580625) 
10:30 a.m.
Lambdarings of automorphisms.
Jonathan D.H. Smith*, Iowa State University
(10580813) 
11:00 a.m.
On finitely related clones.
Peter Mayr*, Centro de Algebra de Universidade de Lisboa
Erhard Aichinger, Department of Algebra, JKU Linz, Austria
(10580820)

9:00 a.m.

Saturday April 10, 2010, 9:00 a.m.11:20 a.m.
Special Session on Commutative Ring Theory, I
Room 353, Olin Rice Hall
Organizers:
Michael Axtell, University of St. Thomas maxtell@stthomas.edu
Joe Stickles, Millikin University jstickles@millikin.edu

9:00 a.m.
$\tau_{[ ]}$UFD's, UCFD's, and CKdomains.
Jeremiah N. Reinkoester*, The University of Iowa
(10581384) 
9:30 a.m.
Prime Ideals in Birational Extensions of TwoDimensional Power Series Rings.
Christina EubanksTurner*, university of Louisiana at Lafayette
Melissa Luckas, Madison, Wisconsin
Serpil Saydam, University of Louisiana at Monroe
(105813153) 
10:00 a.m.
Integervalued Polynomials on Subsets of a Noncommutative Ring.
Nicholas Werner*, The Ohio State University
(105813166) 
10:30 a.m.
Quasicomplete local rings.
Dan D. Anderson*, The University of Iowa
(10581358) 
11:00 a.m.
Using goingup to characterize goingdown domains.
David E. Dobbs*, University of Tennessee
Andrew J. Hetzel, Tennessee Technological University
(10581380)

9:00 a.m.

Saturday April 10, 2010, 9:00 a.m.11:20 a.m.
Special Session on Partition Theory and the Combinatorics of Symmetric Functions, I
Room 350, Olin Rice Hall
Organizers:
Eric S. Egge, Carleton College eegge@carleton.edu
Kristina Garrett, St. Olaf College garrettk@stolaf.edu

9:00 a.m.
The lattice of finite vector space partitions and its Möbius function.
Fusun Akman*, Illinois State University
Papa Amar Sissokho, Illinois State University
(10580686) 
9:30 a.m.
Multiple special numbers.
Hasan Coskun*, Texas A&M UniversityCommerce
(10580594) 
10:00 a.m.
Sand Piles and Related Partition Dynamics.
Brian Hopkins*, Saint Peter's College
(10580533) 
10:30 a.m.
Explicit bounds for the number of $p$core partitions.
Byungchan Kim*, University of Illinois at UrbanaChampaign
Jeremy Rouse, University of Illinois at UrbanaChampain
(10581107) 
11:00 a.m.
Infinitely many new partition statistics.
Gregory S. Warrington*, University of Vermont
Nicholas A. Loehr, Virginia Tech
(105805296)

9:00 a.m.

Saturday April 10, 2010, 9:00 a.m.11:20 a.m.
Special Session on Cohomology and Representation Theory of Algebraic Groups and Related Structures, I
Room 243, Olin Rice Hall
Organizers:
Christopher Bendel, University of WisconsinStout bendelc@uwstout.edu
Bobbe Cooper, University of Minnesota bcooper@math.umn.edu
Terrell Hodge, Western Michigan University terrell.hodge@wmich.edu

9:00 a.m.
The classification of tridiagonal pairs.
Paul M Terwilliger*, Math Department, University of Wisconsin
(105815108) 
9:30 a.m.
Thin Hessenberg Pairs of Linear Transformations.
Ali Godjali*, University of WisconsinMadison
(105815218) 
10:00 a.m.
Dual polar graphs and the quantum algebra $U_q(sl_2)$.
Chalermpong Worawannotai*, University of WisconsinMadison
(105805226) 
10:30 a.m.
The measurement of quantum entanglement and enumeration of graph coverings.
Michael W. Hero, University of Wisconsin  Milwaukee
Lauren Kelly Williams, University of Wisconsin  Milwaukee
Jeb F. Willenbring*, University of Wisconsin  Milwaukee
(105820131) 
11:00 a.m.
Generalized Trace and Dimension Functions in Ribbon Categories.
Nathan Geer, Utah State University
Jonathan Kujawa*, University of Oklahoma
Bertrand PatureauMirand, Universite de BretagneSud
(105818122)

9:00 a.m.

Saturday April 10, 2010, 9:00 a.m.11:20 a.m.
Special Session on Geometric Flows, Moving Frames and Integrable Systems, I
Room 110, Humanities Building
Organizers:
Gloria MariBeffa, University of WisconsinMadison maribeff@math.wisc.edu
Peter Olver, University of Minnesota olver@math.umn.edu

9:00 a.m.
Algebra of Differential Invariants.
Evelyne Hubert*, INRIA Mediterannee
(105808137) 
9:30 a.m.
Symbolic Computation of Conservation Laws of Nonlinear Partial Differential Equations in Multiple Space Dimensions.
Willy A Hereman*, Colorado School of Mines
Loren Douglas Poole, Colorado School of Mines
(10583579) 
10:00 a.m.
Discussion 
10:30 a.m.
Linear stability of smallamplitude torus knot solutions of the Vortex Filament Equation.
Annalisa Calini*, Department of Mathematics, College of Charleston
Thomas Ivey, Department of Mathematics, College of Charleston
Scott Keith, Department of Mathematics, University of North Carolina at Chapel Hill
Stephane Lafortune, Department of Mathematics, College of Charleston
(105835217) 
11:00 a.m.
Solving Equivalence Problems with the Equivariant Moving Frame Method.
Francis Valiquette*, McGill University
(10585395)

9:00 a.m.

Saturday April 10, 2010, 9:00 a.m.10:25 a.m.
Session for Contributed Papers
Room 101, Olin Rice Hall

9:00 a.m.
On a Hankel transform integral.
Ibrahim A. Salehbhai*, S.V. National Institute of Technology, Surat395 007, INDIA
A. K. Shukla, S.V. National Institute of Technology, Surat395 007, INDIA
(10583340) 
9:15 a.m.
Generating relation for Laguerre type polynomial containing MittagLeffler function.
Jyotindra C Prajapati, Charotar University of Science and Technology, Changa, Anand388 421, India
Amitkumar Dilipbhai Patel*, S. V. National Institute of Technology, Surat395007, Gujarat, INDIA
Ajay K Shukla, S. V. National Institute of Technology, Surat395007, Gujarat, INDIA
(10583345) 
9:30 a.m.
Asymptotic analysis of the shape and composition of alloy islands in epitaxial solid films.
Mihaela Blanariu*, Columbia College Chicago, IL
B J Spencer, State University of New York at Buffalo, NY
(10587437) 
9:45 a.m.
Complemented Subspaces of Linear Bounded Operators.
Manijeh Bahreini, University of Isfahan, Iran
Elizabeth Bator, University of North Texas, TX
Ioana Ghenciu*, University of WisconsinRiver Falls
(10584634) 
10:00 a.m.
Necessary and Sufficient Conditions for KreinMilman Type Conclusions.
Jay Kangel*, Minneapolis, Minnesota
(10585228) 
10:15 a.m.
Calculus students: Learn from others' mistakes.
Semail Ulgen Yildirim*, Northwestern University
(10589732)

9:00 a.m.

Saturday April 10, 2010, 11:45 a.m.12:35 p.m.
Invited Address
Welcome Remarks by Kathleen M. Murray, Provost and Dean of the Faculty, and Georgia Benkart, AMS Associate Secretary
J. B. Davis Lecture Hall, Campus Center
Representations and cohomology of categories.
J. B. Davis Lecture Hall, Campus Center
Peter Webb*, University of Minnesota
(10581803) 
Saturday April 10, 2010, 2:00 p.m.4:50 p.m.
Special Session on Physical Knotting and Linking and its Applications, II
Room 213, Humanities Building
Organizers:
Eric Rawdon, University of St. Thomas ejrawdon@stthomas.edu
Yuanan Diao, University of North Carolina at Charlotte yuanandiao@uncc.edu
Claus Ernst, Western Kentucky University claus.ernst@wku.edu

2:00 p.m.
Minimal step number of cubic lattice knots in thin slabs.
Robert G. Scharein*, San Francisco State University
(105855289) 
2:30 p.m.
DNA unknotting, topoisomerases and bacteriophages.
Mariel Vazquez*, San Francisco State University
Javier Arsuaga, San Francisco State University
Robert Scharein, San Francisco State Unviersity
(105892281) 
3:00 p.m.
DNA knotting in bacteriophage spooling like conformations.
Javier Arsuaga*, San Francisco State University
Yuanan Diao, University of North Carolina, Charlotte
(105892221) 
3:30 p.m.
Tangle analysis of proteinDNA complexes.
Isabel K. Darcy*, University of Iowa
(10589293) 
4:00 p.m.
On the square writhe of a minimal alternating knot diagram.
Yuanan Diao, UNCC
Claus Ernst*, WKU
Uta Ziegler, WKU
(105857173) 
4:30 p.m.
A Topological Model of ProteinMediated Localized DNA Transformations.
Dorothy Buck*, Imperial College London
Ken Baker, University of Miami
Andrew Lobb, MSRI and SUNYStony Brook
(10585739)

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.4:50 p.m.
Special Session on Hecke Algebras and Deformations in Geometry and Topology, II
Room 250, Olin Rice Hall
Organizers:
Matthew Douglass, University of North Texas douglass@unt.edu
Anne Shepler, University of North Texas ashepler@unt.edu

2:00 p.m.
Functors for unitary representations of real groups and affine Hecke algebras.
Dan Ciubotaru*, University of Utah
(10582273) 
2:30 p.m.
Localization of Cohomologically Induced Modules to Partial Flag Varieties.
S. N. Kitchen*, University of Utah
(105822181) 
3:00 p.m.
Unitary representations of the graded Hecke algebra of type $H_3$.
Cathy Kriloff*, Idaho State University
Yu Chen, Idaho State University
(105816288) 
3:30 p.m.
Green functions via hyperbolic localization.
Pramod N Achar*, Louisiana State University
(105820126) 
4:00 p.m.
Nonemptiness for affine DeligneLusztig varieties associated to dominant Weyl chambers.
Elizabeth T Beazley*, University of Michigan
(105820241) 
4:30 p.m.
Formal deformation quantizations of singular symplectically reduced spaces.
HansChristian Herbig, University of Aarhus, Denmark
Srikanth Iyengar, University of Nebraska at Lincoln
Markus J Pflaum*, Department of Mathematics, University of Colorado at Boulder
(10585383)

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.4:50 p.m.
Special Session on Pattern Formation in Biological Systems, II
Room 001, Old Main
Organizers:
Magdalena Skolarska, University of St. Thomas mastolarska@stthomas.edu
Chad Topaz, Macalester College ctopaz@macalester.edu

2:00 p.m.
Pattern formation of glioma cells (brain tumor) outside the tumor spheroid core.
Yangjin Kim*, University of Michigan
Avner Friedman, Mathematical Biosciences Institute, Ohio State University
Sean Lawler, Ohio State University
Michal Nowicki, Ohio State University
E. Antonio Chiocca, Ohio State University
(10583535) 
2:30 p.m.
A model of cellular movement and its effect on substrate traction patterns.
Magdalena A Stolarska*, University of St. Thomas
(10589296) 
3:00 p.m.
Robustness of Pattern Formation in Development.
Hans G. Othmer*, School of Mathematics, University of Minnesota
(105892105) 
3:30 p.m.
Forced patterns near a TuringHopf bifurcation.
Anne J Catlla*, Wofford College
Chad M Topaz, Macalester College
(105837234) 
4:00 p.m.
A cAMP Signaling Model Explains the Benefit of Maintaining Two Forms of Phosphodiesterase in {\it Dictyostelium}.
Eirikur Palsson*, Simon Fraser University, Burnaby, BC, Canada
(105892283) 
4:30 p.m.
A multicellular mathematical model for the initiation of geneexpression waves during somitogenesis.
Mark B Campanelli*, Montana State University
(105892247)

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.4:50 p.m.
Special Session on Fractals, Convolution Measures, and Frames, II
Room 112, Humanities Building
Organizers:
Keri Kornelson, University of Oklahoma kkornelson@math.ou.edu
Karen Shuman, Grinnell College shumank@math.grinnell.edu

2:00 p.m.
BiLipschitz equivalence of dustlike Cantor sets.
Yang Wang*, Michigan State University
(105842239) 
2:30 p.m.
Multifractal analyis for BedfordMcMullen carpets.
Thomas M Jordan*, The University of Bristol, UK
(105828107) 
3:00 p.m.
Fractals as Boundaries.
Erin P. J. Pearse*, University of Iowa
Palle E. T. Jorgensen, University of Iowa
(105837255) 
3:30 p.m.
Fractal Laplacians defined by iterated function systems with overlaps.
SzeMan Ngai*, Georgia Southern University
(105828112) 
4:00 p.m.
A Filterbased Construction for Fractal Wavelet Frames.
Jonas D'Andrea*, Westminster College
(105846290) 
4:30 p.m.
On the spectral operator for generalized fractal strings.
Hafedh Herichi*, University of California, Riverside
(10584656)

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.5:00 p.m.
Special Session on Mathematical Developments in Cell and Systems Biology, II
Room 002, Old Main
Organizers:
Anastasios Matzavinos, Iowa State University tasos@iastate.edu
Nicoleta Eugenia Tarfulea, Purdue University Calumet ntarfule@calumet.purdue.edu

2:00 p.m.
Stochastic Model for Spatial Epidemics: Quadratic Contact Process.
Jim Evans*, Iowa State University
DaJiang Liu, Ames Laboratory  USDOE
Xiaofang Guo, Iowa State University
(105882162) 
3:00 p.m.
Mixed Mode Oscillations in a Neuroendocrine Cell Model.
Sayanti Banerjee, Ohio State University
Janet Best*, Ohio State University
Jung Eun Kim, Ohio State University
(105892286) 
4:00 p.m.
A hyperbolic system of conservation laws for fluid flows through compliant axisymmetric vessels.
GuiQiang Chen, Northwestern University
Weihua Ruan*, Purdue University Calumet
(105835185) 
4:30 p.m.
Semigroup Analysis of Structured Parasite Populations.
Peter Hinow*, University of Wisconsin  Milwaukee
(10583554)

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.4:50 p.m.
Special Session on Differential Equations and Applications, II
Room 009, Old Main
Organizers:
Nicolai Tarfulea, Purdue University Calumet tarfulea@calumet.purdue.edu
Catalin Turc, Case Western Reserve University catalin.turc@case.edu

2:00 p.m.
Flux and slope limiters for finite element approximations to convectiondominated transport equations.
Dmitri Kuzmin*, University of Houston
(10583552) 
2:30 p.m.
An approximate Greenfunction algorithm for solving FokkerPlanck equations.
Anna L Mazzucato*, Pennsylvania State University
Wen Cheng, Pennsylvania State University
Nicola D Costanzino, Pennsylvania State University
Victor Nistor, Pennsylvania State University
(105835250) 
3:00 p.m.
Numerical methods for fully nonlinear elliptic equations.
Gerard Awanou*, Northern Illinois University
(105865197) 
3:30 p.m.
Some numerical methods for shell models.
Sheng Zhang*, Wayne State University, Detroit, Michigan
(105865257) 
4:00 p.m.
Modeling and numerical simulations of immiscible multiphase fluids.
James Brannick*, Penn State University
(105835292) 
4:30 p.m.
The FEM for axisymmetric elliptic PDEs.
Hengguang Li*, Department of Mathematics, Syracuse University
(105865266)

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.4:20 p.m.
Special Session on Applications of a Geometric Approach to Chaotic Dynamics, II
Room 010, Old Main
Organizers:
Evelyn Sander, George Mason University esander@gmu.edu
Judy Kennedy, Lamar University kennedy9905@gmail.com
James Yorke, University of Maryland yorke@umd.edu

2:00 p.m.
Comparing the period doubling cascades of two maps.
James A Yorke*, University of Maryland
(105837143) 
2:30 p.m.
Entropy Efficiency of Braids.
Philip Boyland*, University of Florida
(105837176) 
3:00 p.m.
Applications of KAM theory to population dynamics.
Marian Gidea*, Northeastern Illinois University
James Meiss, University of Colorado at Boulder
Ilie Ugarcovici, DePaul University
Howard Weiss, Georgia Institute of Technology
(105837172) 
3:30 p.m.
Exact topological entropy for some nonhyperbolic maps.
JeanLuc Thiffeault*, University of Wisconsin  Madison
Sarah E. Matz, University of Wisconsin  Madison
Kevin A. Mitchell, University of California, Merced
(105837132) 
4:00 p.m.
Discussion

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.4:50 p.m.
Special Session on Quantum Invariants of 3manifolds and Modular Categories, II
Room 226, Humanities Building
Organizers:
Thang Le, Georgia Institute of Technology letu@math.gatech.edu
Eric Rowell, Texas A&M University rowell@math.tamu.edu
Vladimir Touraev, Indiana University vtouraev@indiana.edu

2:00 p.m.
Topological Quantum Information, Khovanov Homology and the Jones Polynomial.
Louis H. Kauffman*, University of Illinois at Chicago
(105857212) 
2:30 p.m.
Polynomial 6jSymbols and States Sums on Triangulated 3Manifolds.
Nathan Geer*, Utah State University
Bertrand Patureau, Université de BretagneSud
(105857155) 
3:00 p.m.
The Integrality of the Quantum SU(2) Invariant of 3manifolds.
Qi Chen*, Department of Mathematics, WinstonSalem State University
(10585771) 
3:30 p.m.
Colored $\mathfrak{sl}(N)$homology for links and its deformations.
Hao Wu*, George Washington University
(105857154) 
4:00 p.m.
Categorical Quandles and Knots.
J. Scott Carter*, University of South Alabama
Alissa Crans, Loyola University Marymount
Mohamed Elhamdadi, University of South Florida
Masahico Saito, University of South Florida
(105855128) 
4:30 p.m.
The second quandle homology of odd Takasaki quandles and exterior algebra.
Maciej Niebrzydowski, U.L. at Lafayette
Jozef H. Przytycki*, George Washington University and U.T. at Dallas
(105857139)

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.4:50 p.m.
Special Session on Probabilistic and Extremal Combinatorics, II
Room 150, Olin Rice Hall
Organizers:
Ryan Martin, Iowa State University rymartin@iastate.edu
Maria Axenovich, Iowa State University axenovic@iastate.edu

2:00 p.m.
Fractional Chromatic Number of Trianglefree Graphs with $\Delta\leq 3$.
Linyuan Lu*, University of South Carolina
Xing Peng, University of South Carolina
(105805261) 
2:30 p.m.
The Steiner problem in the hypercube.
Tao Jiang, Miami University
Zevi Miller, Miami University
Dan Pritikin*, Miami University
(105805158) 
3:00 p.m.
An Extremal Characterization of Projective Planes.
Felix Lazebnik*, University of Delaware
Stefaan De Winter, Department of Mathematics and Computer Algebra, Gent University
Jacques Verstraëte, Department of Mathematics, UCSD
(105805280) 
3:30 p.m.
Set systems without a strong simplex.
Tao Jiang*, Miami University
Oleg Pikhurko, Carnegie Mellon University
Zelealem Yilma, Carnegie Mellon University
(105805103) 
4:00 p.m.
The Lubell function and $H$free families of subsets.
Jerrold R. Griggs*, University of South Carolina
WeiTian Li, University of South Carolina
Linyuan Lu, University of South Carolina
(105805284) 
4:30 p.m.
On the Size of Maximal Antichains and the Number of Pairwise Disjoint Maximal Chains.
William T Trotter*, Georgia Institute of Technology
David M Howard, Georgia Institute of Technology
(10580560)

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.4:50 p.m.
Special Session on Combinatorial Representation Theory, II
Room 241, Olin Rice Hall
Organizers:
Tom Halverson, Macalester College halverson@macalester.edu
Victor Reiner, University of Minnesota reiner@math.umn.edu

2:00 p.m.
A simple construction of the irreducible webs in the spider for $\mathfrak{sl}_3$.
Julianna Tymoczko*, University of Iowa
(10580566) 
2:30 p.m.
The cluster and dual canonical bases of $\mathbb{Z}[x_{11}, ... , x_{33}]$ are equal.
Brendon Rhoades*, MIT
(105805258) 
3:00 p.m.
Exceptional sequences and rational invariants for quivers.
Calin Ioan Chindris*, University of Iowa
(105816248) 
3:30 p.m.
A Cambrian approach to cluster algebras.
Nathan Reading*, North Carolina State University
David Speyer, MIT
(105805278) 
4:00 p.m.
Non commutative rank 2 cluster algebras and the Kontsevich conjecture.
Philippe Di Francesco, CEA/Saclay, France
Rinat Kedem*, University of Illinois at UrbanaChampaign
(10580585) 
4:30 p.m.
Representation Types of Finite EICategories.
Liping Li*, University of Minnesota, Twin Citeis
(10581643)

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.4:20 p.m.
Special Session on Universal Algebra and Order, II
Room 301, Olin Rice Hall
Organizers:
Jeffrey Olson, Norwich University jolson@norwich.edu
Jeremy Alm, Illinois College alm.academic@gmail.com
Kristi Meyer, Wisconsin Lutheran College kristi.meyer@wlc.edu
Japheth Wood, Bard College jwood@bard.edu

2:00 p.m.
Approximate satisfaction of equations.
Walter Taylor*, Professor Emeritus, University of Colorado, Boulder
(10580823) 
2:30 p.m.
CSP Dichotomy for Idempotent, Right Quasigroups.
Robert McGrail*, Bard College
James Belk, Bard College
Japheth Wood, Bard College
(10580826) 
3:00 p.m.
Pattern operations, strict pattern operations, and varieties.
Joel Berman*, University of Illinois at Chicago
(10580815) 
3:30 p.m.
On fully invariant and verbal congruences.
Clifford Bergman*, Iowa State University
Joel David Berman, University of Illinois at Chicago
(10580812) 
4:00 p.m.
A Dozen Easy Problems.
George F. McNulty*, University of South Carolina
(10580816)

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.4:50 p.m.
Special Session on Commutative Ring Theory, II
Room 353, Olin Rice Hall
Organizers:
Michael Axtell, University of St. Thomas maxtell@stthomas.edu
Joe Stickles, Millikin University jstickles@millikin.edu

2:00 p.m.
The partially ordered set of prime ideals in a twodimensional Noetherian domain.
Roger A. Wiegand*, University of Nebraska
Sylvia M. Wiegand, University of Nebraska
(105813168) 
2:30 p.m.
Integral domains which admit only finitely many star operations.
Evan Houston*, UNC Charlotte
Abdeslam Mimouni, King Faud University of Petroleum & Minerals
Mi Hee Park, ChungAng University
(105813264) 
3:00 p.m.
Topology and integervalued polynomials on valuation domains.
K Alan Loper*, Ohio State University
(105813260) 
3:30 p.m.
On CohenKaplansky Domains.
Jim Coykendall*, North Dakota State University
Chris Spicer, Morningside College
(105813219) 
4:00 p.m.
Embedding dimension, multiplicity and CohenMacaulayness of subintegral extensions of local Noetherian domains.
Bruce Olberding*, New Mexico State University
(105813240) 
4:30 p.m.
Nonunique factorization, CohenKaplansky Domains, and the invariant \overline{\Lambda}(R).
Jason Laska*, University of Tennessee
(10581370)

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.4:20 p.m.
Special Session on Partition Theory and the Combinatorics of Symmetric Functions, II
Room 350, Olin Rice Hall
Organizers:
Eric S. Egge, Carleton College eegge@carleton.edu
Kristina Garrett, St. Olaf College garrettk@stolaf.edu

2:00 p.m.
q,t Counting Dyck Paths with Forced and Forbidden Touch Points.
Mike Zabrocki*, Mathematics and Statistics Dept, York University
(105805171) 
2:30 p.m.
Hall Littlewood operators in the Theory of Parking Functions.
Adriano M. Garsia*, UCSD
Guoce Xin, Nankai University
Mike Zabrocki, York University
(105805138) 
3:00 p.m.
Two Bijections in the Theory of Parking Functions.
Angela Hicks*, University of California San Diego
(105805231) 
3:30 p.m.
From Macdonald polynomials to a charge statistic in classical Lie types.
Cristian Lenart*, State University of New York at Albany
(105805265) 
4:00 p.m.
Jeu de taquin for increasing tableaux.
Alexander Yong*, University of Illinois at UrbanaChampaign
(10580561)

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.4:50 p.m.
Special Session on Cohomology and Representation Theory of Algebraic Groups and Related Structures, II
Room 243, Olin Rice Hall
Organizers:
Christopher Bendel, University of WisconsinStout bendelc@uwstout.edu
Bobbe Cooper, University of Minnesota bcooper@math.umn.edu
Terrell Hodge, Western Michigan University terrell.hodge@wmich.edu

2:00 p.m.
Factoring tilting modules for algebraic groups.
Stephen Doty*, Loyola University Chicago
(105820200) 
2:30 p.m.
Ext and Donkin's tilting module conjecture.
Leonard L Scott*, University of Virginia Department of Mathematics
(105820263) 
3:00 p.m.
Soergel's character formula for tilting modules via derived equivalences.
Rahbar Virk*, University of Wisconsin, Madison
(105822238) 
3:30 p.m.
Killing Forms of Isotropic Lie Algebras.
Audrey Malagon*, Mercer University
(105817198) 
4:00 p.m.
Nilpotent Orbit Theory and Infinitesimal Blocks of the Parabolic Category $\mathcal{O}_S$.
Kenyon J Platt*, Brigham Young University
Bobbe J Cooper, University of Minnesota
(105817149) 
4:30 p.m.
Complexity of KazhdanLusztig polynomials and Koszul structures.
Brian Parshall*, Dept. of Mathematics/ University of Virginia
Leonard Scott, Dept. of Mathematics/University of Virginia
(105820206)

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.4:50 p.m.
Special Session on Geometric Flows, Moving Frames and Integrable Systems, II
Room 110, Humanities Building
Organizers:
Gloria MariBeffa, University of WisconsinMadison maribeff@math.wisc.edu
Peter Olver, University of Minnesota olver@math.umn.edu

2:00 p.m.
Integrable curve flows in flat space.
ChuuLian Terng*, Department of Mathematics, University of California, Irvine
Gudlaugur Thorbergsson, Mathematisches Institut der Universität zu Köln Weyertal , Germany
(105853193) 
3:00 p.m.
Discussion 
3:30 p.m.
Integrable Curve Flows in CentroAffine Space.
Annalisa Calini, College of Charleston
Thomas Ivey*, College of Charleston
Gloria Marí Beffa, University of Wisconsin, Madison
(105835124) 
4:00 p.m.
BiHamiltonian geometric curve flows in semisimple Klein geometries.
Stephen Anco*, Department of Mathematics, Brock University
(105835256) 
4:30 p.m.
The Light Cone and the Conformal Sphere: Differential Invariants and their Relations.
Theresa C Anderson*, University of WisconsinMadison
(105853102)

2:00 p.m.

Saturday April 10, 2010, 2:00 p.m.4:50 p.m.
Special Session on Matrices and Graphs, II
Room 100, Olin Rice Hall
Organizers:
Luz M. DeAlba, Drake University luz.dealba@drake.edu
Adam Berliner, St. Olaf College berliner@stolaf.edu
Leslie Hogben, Iowa State University lhogben@iastate.edu
InJae Kim, Minnesota State University injae.kim@mnsu.edu

2:00 p.m.
Zero Forcing Numbers for Graphs.
Seth A. Meyer*, University of Wisconsin  Madison
(105805192) 
2:30 p.m.
Results for improving computation of zero forcing number.
Darren D. Row*, Iowa State University
(105815130) 
3:00 p.m.
Computation of Minimum Rank.
Jason Grout*, Drake University
Laura DeLoss, DMACC
Leslie Hogben, Iowa State University
Tracy McKay, Iowa State University
Jason Smith, Iowa State University
Geoff Tims, Iowa State University
H. Tracy Hall, Provo, UT
Josh Lagrange, Iowa State University
(105815242) 
3:30 p.m.
(0,1)Matrices and Nonnegative Eigenvalues.
Richard A Brualdi*, University of WisconsinMadison
(10581547) 
4:00 p.m.
Acyclic matrices with a small number of distinct eigenvalues.
Reshmi Nair*, University of Wyoming
Bryan Shader, University of Wyoming
(10580564) 
4:30 p.m.
Symmetric Hamilton Cycle Decompositions of Graphs.
Michael William Schroeder*, University of Wisconsin  Madison
Richard A Brualdi, University of Wisconsin  Madison
(105805293)

2:00 p.m.

Saturday April 10, 2010, 5:05 p.m.5:55 p.m.
Invited Address
Fluctuations versus spatial variation in the competition between fast and slow dispersers.
J. B. Davis Lecture Hall, Campus Center
Charles Doering*, University of Michigan
(10589201) 
Saturday April 10, 2010, 6:00 p.m.7:30 p.m.
Macalester College Department of Mathematics Reception
Smail Gallery, Olin Rice Hall
Sunday April 11, 2010

Sunday April 11, 2010, 8:00 a.m.12:00 p.m.
Meeting Registration
Lobby, Olin Rice Hall 
Sunday April 11, 2010, 8:00 a.m.12:00 p.m.
Exhibit and Book Sale
Lobby, Olin Rice Hall 
Sunday April 11, 2010, 8:00 a.m.10:50 a.m.
Special Session on Differential Equations and Applications, III
Room 009, Old Main
Organizers:
Nicolai Tarfulea, Purdue University Calumet tarfulea@calumet.purdue.edu
Catalin Turc, Case Western Reserve University catalin.turc@case.edu

8:00 a.m.
A study of incompressible flow with surfactant monolayer.
YuenYick Kwan, Tulane University
Jinhae Park*, Purdue University
Jie Shen, Purdue University
(105876207) 
8:30 a.m.
Local adaptive radiation condition and overlapping domain decomposition methods for Helmholtz equation.
Yassine Boubendir*, New Jersey Institute of Technology
(105865229) 
9:00 a.m.
Numerical Solution of Coupled StokesDarcy Flow.
Svetlana Tlupova*, Department of Mathematics, University of Michigan
(105835146) 
9:30 a.m.
Discontinuous Galerkin Methods for Magnetohydrodynamics.
James A Rossmanith*, University of Wisconsin  Madison
(10586569) 
10:00 a.m.
Application of Discontinuous Galerkin Methods to Kinetic Problems with GasSurface Interaction.
Alexander Alekseenko*, California State University, Northridge
(105865295) 
10:30 a.m.
Exponential Stability And Instability In Finite Delay Nonlinear Volterra Integrodifferential Equations.
Youssef N Raffoul*, University of Dayton
(10583465)

8:00 a.m.

Sunday April 11, 2010, 8:00 a.m.10:50 a.m.
Special Session on Matrices and Graphs, III
Room 100, Olin Rice Hall
Organizers:
Luz M. DeAlba, Drake University luz.dealba@drake.edu
Adam Berliner, St. Olaf College berliner@stolaf.edu
Leslie Hogben, Iowa State University lhogben@iastate.edu
InJae Kim, Minnesota State University injae.kim@mnsu.edu

8:00 a.m.
Sign patterns that require or allow powerpositivity.
Minerva Catral*, Iowa State University
Leslie Hogben, Iowa State University
D. D. Olesky, University of Victoria
P. van den Driessche, University of Victoria
(105815136) 
8:30 a.m.
Strongly Eventually Nonnegative Matrices.
Minerva Catral, Iowa State University
Craig Erickson*, Iowa State University
Leslie Hogben, Iowa State University
D. D. Olesky, University of Victoria
P. van den Driessche, University of Victoria
(105815147) 
9:00 a.m.
Spectrally arbitrary patterns over finite fields.
Elizabeth J. Bodine*, Washington State University
Judith J. McDonald, Washington State University
(105815275) 
9:30 a.m.
Complex Spectrally Arbitrary Patterns.
Amy A Yielding*, Eastern Oregon University
(10581555) 
10:00 a.m.
Spectrally Arbitrary Ray Patterns.
Judith J. McDonald*, Washington State University
Jeff Stuart, Pacific Luthern University
(105815214) 
10:30 a.m.
Preliminary Report on Sets of Inertias for Matrix Patterns.
Michael S. Cavers*, University of Regina
(10581542)

8:00 a.m.

Sunday April 11, 2010, 8:30 a.m.10:50 a.m.
Special Session on Physical Knotting and Linking and its Applications, III
Room 213, Humanities Building
Organizers:
Eric Rawdon, University of St. Thomas ejrawdon@stthomas.edu
Yuanan Diao, University of North Carolina at Charlotte yuanandiao@uncc.edu
Claus Ernst, Western Kentucky University claus.ernst@wku.edu

8:30 a.m.
Intrinsic symmetries of knots and links.
Jason Cantarella, University of Georgia
Jason Parsley*, Wake Forest University
(105857277) 
9:00 a.m.
On the Ropelength of Alternating Conformations.
R Trapp*, Cal State San Bernardino
S. Sadjadi, SUNY Buffalo
J. Alley, University of Nebraska
C. Mathes, Willamette University
(105857201) 
9:30 a.m.
Lessons from the \texttt{ridgerunner} collection of tight knots.
Jason Cantarella*, University of Georgia
Ted Ashton, None.
Michael Piatek, University of Washington
Eric Rawdon, University of St. Thomas
(105853259) 
10:00 a.m.
Flat Ribbon Links in $\mathbb{R}^2$.
Elizabeth Denne*, Smith College
John M Sullivan, TU Berlin
Nancy Wrinkle, Northeastern Illinois University
(105857106) 
10:30 a.m.
Knots and Links as Collections of Annuli with Minimal Modulus.
Robert B. Kusner*, GANG & Math: University of Massachusetts at Amherst
(105853127)

8:30 a.m.

Sunday April 11, 2010, 8:30 a.m.10:50 a.m.
Special Session on Hecke Algebras and Deformations in Geometry and Topology, III
Room 250, Olin Rice Hall
Organizers:
Matthew Douglass, University of North Texas douglass@unt.edu
Anne Shepler, University of North Texas ashepler@unt.edu

8:30 a.m.
Graded Hecke algebras and deformations of crossed products.
Anne V. Shepler, University of North Texas
Sarah Witherspoon*, Texas A&M University
(105816144) 
9:00 a.m.
A conjecture of Duflo and the Ext algebra of branes.
Andrei Caldararu*, UW Madison
Junwu Tu, UW Madison
Damien Calaque, University of Lyon, France
(105814300) 
9:30 a.m.
From Hecke Algebras to Brauer Graph Algebras.
Sibylle Schroll*, University of Leicester
(105816183) 
10:00 a.m.
Hochschild invariants for curved algebras and LandauGinzburg models.
Junwu Tu*, Math Department, UW madison
(105818159) 
10:30 a.m.
Koszul selfinjective algebras and their deformations.
Nicole J. Snashall*, University of Leicester, UK
(105816116)

8:30 a.m.

Sunday April 11, 2010, 8:30 a.m.10:50 a.m.
Special Session on Fractals, Convolution Measures, and Frames, III
Room 112, Humanities Building
Organizers:
Keri Kornelson, University of Oklahoma kkornelson@math.ou.edu
Karen Shuman, Grinnell College shumank@math.grinnell.edu

8:30 a.m.
Building fractal space GMRAs from filters.
Kathy D. Merrill*, Colorado College
(105841227) 
9:00 a.m.
Abstract generalized multiresolution structures.
Lawrence W. Baggett*, University of Colorado
Veronika Furst, Fort Lewis College
Kathy Merrill, The Colorado College
Judith Packer, University of Colorado
(10584392) 
9:30 a.m.
On induced representations of BaumslagSolitar groups and existence of wavelet sets.
Judith A Packer*, University of Colorado at Boulder
(105842170) 
10:00 a.m.
On Common Fundamental Domains.
Dorin Dutkay, University of Central Florida
Deguang Han, University of Central Florida
Palle Jorgensen, University of Iowa
Gabriel Picioroaga*, University of South Dakota
(105822117) 
10:30 a.m.
Nonirreducible Gibbs States over Finite and Infinite Alphabets.
E Andrei Ghenciu*, East Central University
(105837184)

8:30 a.m.

Sunday April 11, 2010, 8:30 a.m.10:50 a.m.
Special Session on Mathematical Developments in Cell and Systems Biology, III
Room 002, Old Main
Organizers:
Anastasios Matzavinos, Iowa State University tasos@iastate.edu
Nicoleta Eugenia Tarfulea, Purdue University Calumet ntarfule@calumet.purdue.edu

8:30 a.m.
Stochastic analysis of the motion of DNA nanomechanical bipeds.
Iddo BenAri, University of Connecticut
Khalid Boushaba, Iowa State University
Anastasios Matzavinos, Iowa State University
Alexander Roitershtein*, Iowa State University
(105860246) 
9:30 a.m.
Role of microenvironment in cancer progression : A mathematical model.
Yangjin Kim*, University of Michigan
Avner Friedman, Mathematical Biosciences Institute, Ohio State University
Julie Wallace, Human Cancer Genetics, Ohio State University
Fu Li, Ohio State University
Michael Ostrowski, Ohio State University
(10589241) 
10:00 a.m.
Modeling ischemic cutaneous wounds.
chuan xue*, Mathematical Biosciences Institute\unknownmultibyte{xFF0C} Ohio State University
(10589276) 
10:30 a.m.
Novel clustering methods for the analysis of biological data.
Sijia Liu*, Iowa State University, Department of Mathematics
(105892225)

8:30 a.m.

Sunday April 11, 2010, 8:30 a.m.10:50 a.m.
Special Session on Applications of a Geometric Approach to Chaotic Dynamics, III
Room 010, Old Main
Organizers:
Evelyn Sander, George Mason University esander@gmu.edu
Judy Kennedy, Lamar University kennedy9905@gmail.com
James Yorke, University of Maryland yorke@umd.edu

8:30 a.m.
Dynamic Classification of Sierpinski Curve Julia Sets.
Robert L. Devaney*, Boston University
(10583708) 
9:00 a.m.
The classification of expansive attractors on surfaces.
Brian F Martensen*, Minnesota State University
Marcy Barge, Montana State University
(105837121) 
9:30 a.m.
Complex Dynamics of Rational Maps.
Elizabeth D Russell*, US Military Academy (West Point)
(105837125) 
10:00 a.m.
Pseudoarcs and generalized inverse limits.
Sina Greenwood, University of Auckland, Auckland, New Zealand
Judy A. Kennedy*, Lamar University, Beaumont, TX
(105837156) 
10:30 a.m.
Spaces of sigma finite linear measure.
Edward D Tymchatyn*, University of Saskatchewan
Ihor Stasyuk, University of Saskatchewan
(105837109)

8:30 a.m.

Sunday April 11, 2010, 8:30 a.m.10:50 a.m.
Special Session on Quantum Invariants of 3manifolds and Modular Categories, III
Room 226, Humanities Building
Organizers:
Thang Le, Georgia Institute of Technology letu@math.gatech.edu
Eric Rowell, Texas A&M University rowell@math.tamu.edu
Vladimir Touraev, Indiana University vtouraev@indiana.edu

8:30 a.m.
How to obtain invariants of linked surfaces in the 4space from a link homology theory.
Oleg Viro*, Institute for Mathematical Sciences, Stony Brook University, NY
(105857186) 
9:00 a.m.
Commutative Frobenius Algebras and 3dimensional Compression Bordisms.
Uwe Kaiser*, Boise State University
(105857224) 
9:30 a.m.
A Generalization of the Turaev Cobracket and the Minimal SelfIntersection Number.
Patricia Cahn*, Dartmouth College
(10585774) 
10:00 a.m.
Maslov index, Lagrangians, Mapping Class Groups and TQFT.
Patrick M Gilmer*, Louisiana State Univiersity
Gregor Masbaum, Institut de Mathematiques de Jussieu (UMR 7586 du CNRS)
(10585790) 
10:30 a.m.
Virtual linking numbers and the Conway polynomial.
Sergei Chmutov*, Ohio State University, Mansfield
(105857249)

8:30 a.m.

Sunday April 11, 2010, 8:30 a.m.10:50 a.m.
Special Session on Probabilistic and Extremal Combinatorics, III
Room 150, Olin Rice Hall
Organizers:
Ryan Martin, Iowa State University rymartin@iastate.edu
Maria Axenovich, Iowa State University axenovic@iastate.edu

8:30 a.m.
On characterising Vizing's edge colouring bound.
Penny Haxell*, University of Waterloo
(105805157) 
9:00 a.m.
A spectral version of the degreediameter problem.
M Cioaba Sebastian*, Department of Mathematical Sciences, University of Delaware, Newark, DE 19713 USA
(105805100) 
9:30 a.m.
Finding a large balanced bipartite subgraph with high minimum degree.
Stephen G Hartke*, University of NebraskaLincoln
Tyler Seacrest, University of NebraskaLincoln
(105805208) 
10:00 a.m.
Graph Classes Determined by Convexity Notions in Graphs.
Ortrud R Oellermann*, University of Winnipeg
(105805151) 
10:30 a.m.
Rainbow Matching in EdgeColored Graphs.
Timothy D. LeSaulnier, University of Illinois
Christopher Stocker, University of Illinois
Paul S. Wenger, University of Illinois
Douglas B. West*, University of Illinois
(10580567)

8:30 a.m.

Sunday April 11, 2010, 8:30 a.m.10:50 a.m.
Special Session on Commutative Ring Theory, III
Room 353, Olin Rice Hall
Organizers:
Michael Axtell, University of St. Thomas maxtell@stthomas.edu
Joe Stickles, Millikin University jstickles@millikin.edu

8:30 a.m.
CutVertices and CutSets on ZeroDivisor Graphs.
Benjamin Coté, University of Idaho
Caroline Ewing, Colorado College
Michael Huhn, Minneapolis, Minnesota
Chelsea M Plaut, University of Tennessee, Knoxville
Darrin Weber*, Millikin University
(10581375) 
9:00 a.m.
Almost principal ideals in R[x].
Thomas G Lucas*, University of North Carolina Charlotte
(10581399) 
9:30 a.m.
Erd{ő}sZaks All Divisor Sets.
Scott T Chapman*, Sam Houston State University
William W Smith, University of North Carolina at Chapel Hill
(105813270) 
10:00 a.m.
Zerodivisors, zerodivisor graphs, and cut vertices.
Shane P Redmond*, Eastern Kentucky University
(10581349) 
10:30 a.m.
Block diagonal matrices and sums of units over Pruefer domains.
Peter Vamos, University of Exeter
Sylvia M Wiegand*, University of Nebraska
(105813167)

8:30 a.m.

Sunday April 11, 2010, 8:30 a.m.10:50 a.m.
Special Session on Cohomology and Representation Theory of Algebraic Groups and Related Structures, III
Room 243, Olin Rice Hall
Organizers:
Christopher Bendel, University of WisconsinStout bendelc@uwstout.edu
Bobbe Cooper, University of Minnesota bcooper@math.umn.edu
Terrell Hodge, Western Michigan University terrell.hodge@wmich.edu

8:30 a.m.
On cohomology and support varieties for Lie superalgebras.
Irfan Bagci*, University of California, Riverside
(105817120) 
9:00 a.m.
Cohomology rings of infinitesimal unipotent algebraic and quantum groups.
Christopher M. Drupieski*, University of Georgia
Daniel K. Nakano, University of Georgia
Nham Ngo, University of Georgia
(105820169) 
9:30 a.m.
Computing Lie Algebra Cohomology for $p=2$.
Caroline B. Wright*, University of Arizona
(105818230) 
10:00 a.m.
Cohomology of Finite Groups of Lie Type.
Christopher P. Bendel, University of WisconsinStout
Daniel K. Nakano, University of Georgia
Cornelius Pillen*, University of South Alabama
(105820188) 
10:30 a.m.
Finite generation of cohomology rings for classes of infinite groups.
Lizhen Ji, University of Michgan, Ann Arbor, MI
Zongzhu Lin*, Kansas State University
(105820291)

8:30 a.m.

Sunday April 11, 2010, 8:30 a.m.10:50 a.m.
Special Session on Geometric Flows, Moving Frames and Integrable Systems, III
Room 110, Humanities Building
Organizers:
Gloria MariBeffa, University of WisconsinMadison maribeff@math.wisc.edu
Peter Olver, University of Minnesota olver@math.umn.edu

8:30 a.m.
Totally quasiumbilic timelike surfaces in $\mathbb{R}^{1,2}$.
Jeanne N. Clelland*, University of Colorado, Boulder
(105853216) 
9:00 a.m.
Objectimage correspondence for curves under central and parallel projections.
Joseph M Burdis, North Carolina State University
Irina A Kogan*, North Carolina State University
(105853142) 
9:30 a.m.
Discussion 
10:00 a.m.
On geometric integrability of discrete systems.
Adam Doliwa*, University of Warmia and Mazury in Olsztyn, Poland
(10583768) 
10:30 a.m.
Integrable evolution equations on spaces of tensor densities.
Jonatan Lenells, Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge UK
Gerard Misiolek, University of Notre Dame, Notre Dame, IN
Feride Tiglay*, EPFL (Ecole Polytechnique Federale de Lausanne), Switzerland
(105835104)

8:30 a.m.

Sunday April 11, 2010, 9:00 a.m.10:50 a.m.
Special Session on Combinatorial Representation Theory, III
Room 241, Olin Rice Hall
Organizers:
Tom Halverson, Macalester College halverson@macalester.edu
Victor Reiner, University of Minnesota reiner@math.umn.edu

9:00 a.m.
Some degenerations of KazhdanLusztig ideals and multiplicities of Schubert varieties.
Alexander Yong*, University of Illinois at UrbanaChampaign
Li Li, University of Illinois at UrbanaChampaign
(10581463) 
9:30 a.m.
Exploring the cohomology ring of generalized Springer varieties.
Aba Mbirika*, University of Iowa
(105805175) 
10:00 a.m.
Deodhar sets for cograssmannian permutations.
Alexander Woo*, Saint Olaf College
Brant C Jones, University of California at Davis
(105805164) 
10:30 a.m.
Sorting orders, subword complexes and a map to Bruhat order.
Drew Armstrong, University of Miami
Patricia Hersh*, North Carolina State University
(105805123)

9:00 a.m.

Sunday April 11, 2010, 9:00 a.m.10:50 a.m.
Special Session on Universal Algebra and Order, III
Room 301, Olin Rice Hall
Organizers:
Jeffrey Olson, Norwich University jolson@norwich.edu
Jeremy Alm, Illinois College alm.academic@gmail.com
Kristi Meyer, Wisconsin Lutheran College kristi.meyer@wlc.edu
Japheth Wood, Bard College jwood@bard.edu

9:00 a.m.
On algebras of relations with operations of cylindrification.
Dmitry Bredikhin*, Saratov State Technical University
(10580322) 
9:30 a.m.
Constructing relation algebras from semiassociative relation algebras.
Andrew Ylvisaker*, Iowa State University
Roger D Maddux, Iowa State University
(10580621) 
10:00 a.m.
Finite axiomatizability and commutative directoids.
Kate S Owens*, Texas A&M University
(10580609) 
10:30 a.m.
Free Products of Pseudocomplemented Semilattices  Revisited.
M E Adams*, State University of New York at New Paltz
Jürg Schmid, University of Bern
(10580619)

9:00 a.m.

Sunday April 11, 2010, 9:00 a.m.10:50 a.m.
Special Session on Partition Theory and the Combinatorics of Symmetric Functions, III
Room 350, Olin Rice Hall
Organizers:
Eric S. Egge, Carleton College eegge@carleton.edu
Kristina Garrett, St. Olaf College garrettk@stolaf.edu

9:00 a.m.
A Modified Inverse Kostka Matrix.
Eric S. Egge, Carleton College
Nicholas A. Loehr*, Virginia Tech
Gregory S. Warrington, University of Vermont
(105805150) 
9:30 a.m.
A skew Pieri rule.
Sami H Assaf*, MIT
Peter R.W. McNamara, Bucknell University
(105805189) 
10:00 a.m.
A basis for the coinvariant space for quasisymmetric polynomials.
Sarah K Mason*, University of California, San Diego
Aaron Lauve, Texas A&M University
(105805287) 
10:30 a.m.
Generating functions for the number of consecutive occurrences of nonoverlapping patterns in permutations and cycles.
Jeffrey B. Remmel*, University of California, San Diego
(105805220)

9:00 a.m.

Sunday April 11, 2010, 11:05 a.m.11:55 a.m.
Invited Address
From monoidal categories to 3manifold invariants and back.
J. B. Davis Lecture Hall, Campus Center
Vladimir Turaev*, Indiana University
(10585702) 
Sunday April 11, 2010, 1:30 p.m.2:20 p.m.
Invited Address
Reciprocity laws in number theory.
J. B. Davis Lecture Hall, Campus Center
Matthew James Emerton*, Northwestern University 
Sunday April 11, 2010, 2:30 p.m.5:20 p.m.
Special Session on Physical Knotting and Linking and its Applications, IV
Room 213, Humanities Building
Organizers:
Eric Rawdon, University of St. Thomas ejrawdon@stthomas.edu
Yuanan Diao, University of North Carolina at Charlotte yuanandiao@uncc.edu
Claus Ernst, Western Kentucky University claus.ernst@wku.edu

2:30 p.m.
Transport properties of knotted polymers and DNA.
Marc L. Mansfield*, Dept. of Chemistry, Chemical Biology, and Biomedical Engineering, Stevens Institute of Technology
(105882213) 
3:00 p.m.
Supercoiled DNA minicircles.
Lynn Zechiedrich*, Baylor College of Medicine
Jonathan M. Fogg, Baylor College of Medicine
Daniel J. Catanese, Jr., Baylor College of Medicine
Donald Schrock, University of Texas M.D. Anderson
Brian Gilbert, Baylor College of Medicine
Nianxi Zhao, Methodist Hospital
Youli Zu, Methodist Hospital
(10589277) 
3:30 p.m.
Physical Knots.
Thomas W Kephart*, Vanderbilt University
(10585144) 
4:00 p.m.
The linking number and writhe of uniform random walks and polygons in confined spaces.
Kenneth C Millett*, University of California, Santa Barbara
E. Panagiotou, National Technical University of Athens, Greece
S. Lambropoulou, National Technical University of Athens, Greece
(10585798) 
4:30 p.m.
Using tangling to distinguish polymer packing.
Jonathan K Simon*, Department of Mathematics, University of Iowa
Eric J Rawdon, Department of Mathematics, University of St. Thomas
Robert G Scharein, Hypnagogic Software
(105882179) 
5:00 p.m.
Symmetrybreaking in cumulative measures of shapes of polymer models.
Kenneth C. Millett, University of California Santa Barbara
Eric J. Rawdon*, University of Saint Thomas
Andrzej Stasiak, University of Lausanne
Vy Tran, University of Saint Thomas
(105857187)

2:30 p.m.

Sunday April 11, 2010, 2:30 p.m.5:20 p.m.
Special Session on Hecke Algebras and Deformations in Geometry and Topology, IV
Room 250, Olin Rice Hall
Organizers:
Matthew Douglass, University of North Texas douglass@unt.edu
Anne Shepler, University of North Texas ashepler@unt.edu

2:30 p.m.
Catalan numbers and diagonal coinvariant rings for complex reflection groups.
Iain Gordon, University of Edinburgh
Stephen Griffeth*, University of Edinburgh
(10580536) 
3:00 p.m.
Unitary Representations of Rational Cherednik Algebras and Hecke Algebras.
Emanuel I Stoica*, MIT
(105816294) 
3:30 p.m.
Representations of GanGinzburg algebras and quiverrelated differential operators.
Silvia Montarani*, University of Toronto
(105816110) 
4:00 p.m.
Quantum Dmodules and the DAHA.
David A Jordan*, Massachusetts Institute of Technology
(105820141) 
4:30 p.m.
Infinitesimal Hecke algebras.
Apoorva Khare*, Yale University
(105816276) 
5:00 p.m.
Representations of Infinitesimal Hecke algebras in positive characteristic.
Akaki Tikaradze*, University of Toledo
(105816203)

2:30 p.m.

Sunday April 11, 2010, 2:30 p.m.3:20 p.m.
Special Session on Fractals, Convolution Measures, and Frames, IV
Room 112, Humanities Building
Organizers:
Keri Kornelson, University of Oklahoma kkornelson@math.ou.edu
Karen Shuman, Grinnell College shumank@math.grinnell.edu

2:30 p.m.
KadisonSinger Meets Signal Processing.
Peter G. Casazza*, University of Missouri
Janet C. Tremain, University of Missouri
Matt Fickus, Air Force Institute of Technology
Dustin Mixon, Princeton University
(10584246) 
3:00 p.m.
Discussion

2:30 p.m.

Sunday April 11, 2010, 2:30 p.m.3:20 p.m.
Special Session on Mathematical Developments in Cell and Systems Biology, IV
Room 002, Old Main
Organizers:
Anastasios Matzavinos, Iowa State University tasos@iastate.edu
Nicoleta Eugenia Tarfulea, Purdue University Calumet ntarfule@calumet.purdue.edu

2:30 p.m.
Homogenization of partial differential equations in random environments.
Dimitris Kontogiannis*, ISU
(105835202) 
3:00 p.m.
Mathematical modeling of MHC class II mediated immune responses in tissues.
Wen Zhou*, Dept Math, Iowa State University
(105892161)

2:30 p.m.

Sunday April 11, 2010, 2:30 p.m.3:50 p.m.
Special Session on Differential Equations and Applications, IV
Room 009, Old Main
Organizers:
Nicolai Tarfulea, Purdue University Calumet tarfulea@calumet.purdue.edu
Catalin Turc, Case Western Reserve University catalin.turc@case.edu

2:30 p.m.
Discussion

2:30 p.m.

Sunday April 11, 2010, 2:30 p.m.4:50 p.m.
Special Session on Quantum Invariants of 3manifolds and Modular Categories, IV
Room 226, Humanities Building
Organizers:
Thang Le, Georgia Institute of Technology letu@math.gatech.edu
Eric Rowell, Texas A&M University rowell@math.tamu.edu
Vladimir Touraev, Indiana University vtouraev@indiana.edu

2:30 p.m.
Quantum form of the Reidemeister torsion of a knot complement.
Charles D Frohman, The University of Iowa
Joanna KaniaBartoszynska*, National Science Foundation
(105857152) 
3:00 p.m.
Reidemeister Torsion and the Apolynomial.
Charles D Frohman*, The University of Iowa
Joanna M KaniaBartoszynska, National Science Foundation
(10585706) 
3:30 p.m.
The Kauffman bracket skein algebra and the quantum Teichmuller space.
Francis Bonahon, Univeristy of Southern California
Helen Wong*, Carleton College
(105857190) 
4:00 p.m.
Quantum Teichmüller space and Kashaev algebra.
Ren Guo*, School of Mathematics, University of Minnesota
Xiaobo Liu, Institute of Mathematics, Chinese Academy of Sciences
(10585731) 
4:30 p.m.
Discussion

2:30 p.m.

Sunday April 11, 2010, 2:30 p.m.4:50 p.m.
Special Session on Probabilistic and Extremal Combinatorics, IV
Room 150, Olin Rice Hall
Organizers:
Ryan Martin, Iowa State University rymartin@iastate.edu
Maria Axenovich, Iowa State University axenovic@iastate.edu

2:30 p.m.
On a conjecture of Erdos and Simonovits.
Jacques A Verstraete*, Department of Mathematics, University of California San Diego
Peter Keevash, University of London
Benny Sudakov, University of California, Los Angeles
(105805301) 
3:00 p.m.
How to find a two coloring of ${1,2, ... ,n}$ that has few monochromatic constellations.
Steve Butler*, UCLA
Kevin Costello, Georgia Institute of Technology
Ron Graham, UCSD
(10580562) 
3:30 p.m.
Planar graphs are 1relaxed, 4choosable.
H. A. Kierstead*, Arizona State University
William Cushing, Arizona State University
(10580597) 
4:00 p.m.
An extension of Thomassen's results on 2 and 3extendable planar graphs.
Joan P. Hutchinson*, Macalester College
(105805148) 
4:30 p.m.
Exit frequency matrices for finite Markov chains.
Andrew J Beveridge*, Macalester College
Laszlo Lovasz, Eotvos Lorand University
(105805298)

2:30 p.m.

Sunday April 11, 2010, 2:30 p.m.4:20 p.m.
Special Session on Combinatorial Representation Theory, IV
Room 241, Olin Rice Hall
Organizers:
Tom Halverson, Macalester College halverson@macalester.edu
Victor Reiner, University of Minnesota reiner@math.umn.edu

2:30 p.m.
Cellularity and the Jones basic construction.
Frederick M. Goodman*, University of Iowa
John Graber, Bethel College
(105816251) 
3:00 p.m.
Branching coefficients in the finite unipotent uppertriangular groups.
Stephen Lewis, University of Washington at Seattle
Nathaniel Thiem*, University of Colorado at Boulder
(105805194) 
3:30 p.m.
The degenerate twoboundary Hecke algebra.
Zajj B Daugherty*, University of Wisconsin  Madison
(105816215) 
4:00 p.m.
Differential Posets and Smith Normal Forms.
Alex Miller*, School of Mathematics, University of Minnesota
Victor Reiner, School of Mathematics, University of Minnesota
(105805233)

2:30 p.m.

Sunday April 11, 2010, 2:30 p.m.3:50 p.m.
Special Session on Universal Algebra and Order, IV
Room 301, Olin Rice Hall
Organizers:
Jeffrey Olson, Norwich University jolson@norwich.edu
Jeremy Alm, Illinois College alm.academic@gmail.com
Kristi Meyer, Wisconsin Lutheran College kristi.meyer@wlc.edu
Japheth Wood, Bard College jwood@bard.edu

2:30 p.m.
Divisibility in Psedo Valuation Domains.
Elijah J Stines*, Iowa State University (Mathematics Department)
(10580610) 
3:00 p.m.
Embedding $M_\ell$ in $Sub(\mathbb{Z}_n \times \mathbb{Z}_n)$.
Jeremy F Alm*, Illinois College
Aaron Van Winkle, Illinois College
(10580629) 
3:30 p.m.
Fixed elements in involutive residuated lattices.
Jeffrey S Olson*, Norwich University
(10580605)

2:30 p.m.

Sunday April 11, 2010, 2:30 p.m.3:50 p.m.
Special Session on Commutative Ring Theory, IV
Room 353, Olin Rice Hall
Organizers:
Michael Axtell, University of St. Thomas maxtell@stthomas.edu
Joe Stickles, Millikin University jstickles@millikin.edu

2:30 p.m.
Monoids of Modules over Rings with Infinite Representation Type.
Nicholas R Baeth*, University of Central Missouri
Silvia Saccon, University of Nebraska  Lincoln
(10581350) 
3:00 p.m.
The Projective Line Over The Integers.
Ela Celikbas*, University of NebraskaLincoln
Christina EubanksTurner, University of Louisiana at Lafayette
(105813232) 
3:30 p.m.
Discussion 
3:30 p.m.
$\Gamma$rings and their zerodivisor graphs.
Ryan E Clark*, University of Tennessee
(105813297)

2:30 p.m.

Sunday April 11, 2010, 2:30 p.m.3:50 p.m.
Special Session on Geometric Flows, Moving Frames and Integrable Systems, IV
Room 110, Humanities Building
Organizers:
Gloria MariBeffa, University of WisconsinMadison maribeff@math.wisc.edu
Peter Olver, University of Minnesota olver@math.umn.edu

2:30 p.m.
Symmetries, conservation laws, and variational principles in classical field theories.
Juha Pohjanpelto*, Department of Mathemtics, Oregon State University
(10585888) 
3:00 p.m.
GL(2) geometry, integrability and hyperbolicity in high dimensions.
Abraham D Smith*, MSRI and McGill University
(10585338) 
3:30 p.m.
Cohomology of the EulerLagrange complex.
Robert Thompson*, University of Minnesota
(105849274)

2:30 p.m.

Sunday April 11, 2010, 2:30 p.m.4:20 p.m.
Special Session on Matrices and Graphs, IV
Room 100, Olin Rice Hall
Organizers:
Luz M. DeAlba, Drake University luz.dealba@drake.edu
Adam Berliner, St. Olaf College berliner@stolaf.edu
Leslie Hogben, Iowa State University lhogben@iastate.edu
InJae Kim, Minnesota State University injae.kim@mnsu.edu

2:30 p.m.
On nearly complete bipartite graphs.
YiFan Chen, National Chiao Tung University, Taiwan
HungLin Fu, National Chiao Tung University, Taiwan
InJae Kim*, Minnesota State University, Mankato
Eryn Stehr, Minnesota State University, Mankato
Brendon Watts, University of Oklahoma, Norman
(105815118) 
3:00 p.m.
Connected Graphs with Minimum Skew Rank Equal to Four.
Luz M. DeAlba*, Drake University
(105815114) 
3:30 p.m.
Computing the Modular Chromatic Number of Trees.
Todd G Will*, University of Wisconsin  La Crosse
Futaba Okamoto, University of Wisconsin  La Crosse
(105805133) 
4:00 p.m.
On decomposition of a complete graph into Latin square graphs.
Jianmin Ma*, Oxford College, Emory University
(105805165)

2:30 p.m.
Inquiries: meet@ams.org