AMS Sectional Meeting Full Program
Current as of Sunday, October 23, 2011 00:29:39
Special Event or Lecture · Inquiries: meet@ams.org
2011 Fall Central Section Meeting
University of NebraskaLincoln, Lincoln, NE
October 1416, 2011 (Friday  Sunday)
Meeting #1074
Associate secretaries:
Georgia Benkart, AMS benkart@math.wisc.edu
Friday October 14, 2011

Friday October 14, 2011, 2:00 p.m.6:00 p.m.
Book sale and exhibit.
B13 Math Resource Room, Avery Hall 
Friday October 14, 2011, 2:00 p.m.6:00 p.m.
Sectional Meeting Registration.
Lobby Area  Level 0  Avery Hall, Avery Hall 
Friday October 14, 2011, 2:55 p.m.3:45 p.m.
Invited Address
Entropy theory for actions of sofic groups.
Room 115, Avery Hall
Lewis P. Bowen*, Texas A&M University
(10743701) 
Friday October 14, 2011, 4:00 p.m.5:50 p.m.
Special Session on Algorithmic and Geometric Properties of Groups and Semigroups, I
Room 119, Avery Hall
Organizers:
Susan Hermiller, University of NebraskaLincoln shermiller2@math.unl.edu
John Meakin, University of NebraskaLincoln

4:00 p.m.
Cayley automatic groups are not necessarily Cayley biautomatic.
Alexei Miasnikov, Stevens Institute of Technology
Zoran Sunic*, Texas A&M Univerrsity
(107420105) 
4:30 p.m.
Using Composition Trees for calculations with groups.
Alexander J Hulpke*, Colorado State University
(107420220) 
5:00 p.m.
A decade of using noncommutative groups in cryptography.
Delaram Kahrobaei*, City University of New York (CUNY Graduate Center and City Tech)
(107420107) 
5:30 p.m.
Complexity of Group Theoretic Algorithms.
Robert H Gilman*, Stevens Institute of Technology
(107420185)

4:00 p.m.

Friday October 14, 2011, 4:00 p.m.5:50 p.m.
Special Session on Association Schemes and Related Topics, I
Room 108, Avery Hall
Organizers:
Sung Y. Song, Iowa State University sysong@iastate.edu
Paul Terwilliger, University of Wisconsin Madison

4:00 p.m.
Difference Sets and Association Schemes.
James A. Davis*, University of Richmond
(10740552) 
4:30 p.m.
Constructions of Vertex Transitive Directed Strongly Regular Graphs.
Oktay Olmez*, Iowa State University
(107400110) 
5:00 p.m.
Hypergroups.
PaulHermann Zieschang*, Department of Mathematics, University of Texas, Brownsville 78520 TX
(10742006) 
5:30 p.m.
On wreath products of $C$algebras, table algebras, and association schemes.
Bangteng Xu*, Eastern Kentucky University
(10740517)

4:00 p.m.

Friday October 14, 2011, 4:00 p.m.5:50 p.m.
Special Session on Asymptotic Behavior and Regularity for Nonlinear Evolution Equations, I
Room 204, Burnett Hall
Organizers:
Petronela Radu, University of NebraskaLincoln pradu@math.unl.edu
Lorena Bociu, University of NebraskaLincoln

4:00 p.m.
A new approach to nonlocal advection.
Michael L Parks*, Sandia National Laboratories
(10746575) 
4:30 p.m.
Peridynamics as a Multiscale Material Model.
Pablo Seleson*, The University of Texas at Austin
(107474254) 
5:00 p.m.
Peridynamic transient heat flow in bodies with evolving discontinuities.
Florin Bobaru*, University of NebraskaLincoln
Monchai Duangpanya, University of NebraskaLincoln
(107480276) 
5:30 p.m.
Numerical Simulation of Nonlinear Peridynamic models.
Qiang Du, Department of Mathematics, Penn State University, University Park
Kun Zhou*, Department of Mathematics, Penn State University
(107400258)

4:00 p.m.

Friday October 14, 2011, 4:00 p.m.5:50 p.m.
Special Session on Coding Theory, I
Room 110, Avery Hall
Organizers:
Christine Kelley, University of NebraskaLincoln ckelley2@math.unl.edu
Judy Walker, University of NebraskaLincoln

4:00 p.m.
Relative OneWeight Codes.
Jay A. Wood*, Western Michigan University
(107494118) 
4:30 p.m.
Efficient computations with Witt vectors.
Luis Finotti*, University of Tennessee
(10741141) 
5:00 p.m.
The Extension Theorem on Additive Codes over Finite Abelian Groups.
Xiaoyu Liu*, Wright State University
(107494222) 
5:30 p.m.
Equivalence and Duality for RankMetric and Matrix Codes.
Katherine Morrison*, University of Nebraska  Lincoln
(107494108)

4:00 p.m.

Friday October 14, 2011, 4:00 p.m.5:50 p.m.
Special Session on Commutative Algebra, I
Room 107, Burnett Hall
Organizers:
Christina EubanksTurner, University of Louisiana at Lafayette ceturner@louisiana.edu
Aihua Li, Montclair State University

4:00 p.m.
The torsion free cancellation problem for the integral group ring $\mathbb{Z} D_{16}$.
Ryan Karr*, Jupiter, Florida
(107413209) 
4:30 p.m.
How do maximal CohenMacaulay modules behave over rings of infinite CohenMacaulay type?
Silvia Saccon*, The University of Arizona
Nicholas R. Baeth, University of Central Missouri
(107413198) 
5:00 p.m.
Factorization theory and decompositions of modules.
Nicholas R Baeth*, University of Central Missouri
(10741371) 
5:30 p.m.
Prime ideals in mixed polynomial and power series rings.
Ela Celikbas*, University of NebraskaLincoln
(107413269)

4:00 p.m.

Friday October 14, 2011, 4:00 p.m.5:45 p.m.
Special Session on Computational and Applied Mathematics, I
Room 124, Burnett Hall
Organizers:
Ludwig Kohaupt, Beuth University of Technology Berlin, Germany kohaupt@bhtberlin.de
Yan Wu, Georgia Southern University

4:00 p.m.
Optimal Bounds for dynamical technical systems of the formx2D9x=A(t)x+h(t,x)+g(t),x(t0)=x0 Basic ideas and open questions .
Ludwig Kohaupt*, Beuth University of Technology Berlin
(10740007) 
5:00 p.m.
Scale Invariant Kinetic Theory of Ideal Gas, Riemann Hypothesis,and Trisection Problem.
Siavash H Sohrab*, Northwestern University
(107400131)

4:00 p.m.

Friday October 14, 2011, 4:00 p.m.5:50 p.m.
Special Session on Continuous and Numerical Analysis in the Control of PDE's, I
Room 203, Burnett Hall
Organizers:
George Avalos, University of NebraskaLincoln
Mohammad Rammaha, University of NebraskaLincoln
Daniel Toundykov, University of NebraskaLincoln dtoundykov2@unl.edu

4:00 p.m.
Studies of a model in Xray darkfield tomography.
Weimin Han*, Department of Mathematics, University of Iowa, Iowa City, IA 52242, USA
(10746535) 
4:30 p.m.
Linear stability analysis for traveling waves of second order in time PDE's.
Milena Stanislavova*, University of Kansas
Atanas Stefanov, University of Kansas
(107435241) 
5:00 p.m.
MultiDimensional Stability of Discrete Traveling Waves.
Erik S Van Vleck*, University of Kansas
(107435182) 
5:30 p.m.
Asymptotic behavior of a determining form for the 2D NavierStokes equations.
Ciprian Foias, Texas A&M University
Michael Jolly*, Indiana University
Rostyslav Kravchenko, University of Chicago
Edriss Titi, University of California Irvine, Weizmann Institute
(107435281)

4:00 p.m.

Friday October 14, 2011, 4:00 p.m.5:50 p.m.
Special Session on Discrete Methods and Models in Biomathematics, I
Room 121, Burnett Hall
Organizers:
Dora Matache, University of NebraskaOmaha
Jim Rogers, University of NebraskaOmaha
Alan VelizCuba, University of NebraskaLincoln avelizcuba2@unl.edu

4:00 p.m.
Characterizing and Modeling the Microarchitecture of MotherofPearl.
Susan N Coppersmith*, Physics Department, University of WisconsinMadison
(107492270) 
4:30 p.m.
Strings, Trees, and RNA Folding.
Christine E Heitsch*, School of Mathematics, Georgia Institute of Technology
(107492252) 
5:00 p.m.
Reconstructing the parameters of a phylogenetic network from its treeaverage distances.
Stephen J Willson*, Iowa State University
(10749221) 
5:30 p.m.
Applications and Pitfalls of Structured Population Models in Ecology.
Brigitte Tenhumberg*, University of NebraskaLincoln
(107492129)

4:00 p.m.

Friday October 14, 2011, 4:00 p.m.5:50 p.m.
Special Session on Dynamic Systems on Time Scales with Applications, I
Room 118, Burnett Hall
Organizers:
Lynn Erbe, University of NebraskaLincoln lerbe@math.unl.edu
Allan Peterson, University of NebraskaLincoln

4:00 p.m.
Time Scales Ostrowski and Grüss Type Inequalities involving Three Functions.
Elvan AkinBohner, Missouri S&T
Martin Bohner*, Missouri S&T
Thomas Matthews, Missouri S&T
(107434180) 
4:30 p.m.
Oscillation of Even Order Nonlinear Delay Dynamic Equations on Time Scales.
Raziye Mert*, Çankaya University, Department of Mathematics and Computer Science, 06530, Ankara,Turkey
Ağacık Zafer, Middle East Technical University, Department of Mathematics, 06531, Ankara, Turkey
(10743494) 
5:00 p.m.
Some results on the stability of the generalized exponential function on time scales.
Chris R Ahrendt*, University of WisconsinEau Claire
Kevin A Ahrendt, University of NebraskaLincoln
(10743996) 
5:30 p.m.
Almost oscillatory threedimensional dynamical systems.
Elvan Akin Bohner*, Missouri University S&T
Zuzana Dosla, Masaryk University Brno
Bonita Lawrence, Marshall University Huntington
(107437158)

4:00 p.m.

Friday October 14, 2011, 4:00 p.m.5:50 p.m.
Special Session on Dynamical Systems and Operator Algebras, I
Room 119, Burnett Hall
Organizers:
Lewis Bowen, Texas A&M University lpbowen@math.tamu.edu
David Kerr, Texas A&M University

4:00 p.m.
Polynomial Odometers.
Sarah B Frick, Furman University
Nicholas S Ormes*, University of Denver
(107437314) 
4:30 p.m.
The variational principle for topological pressures of actions by sofic groups.
NhanPhu Chung*, Department of Mathematics, SUNY at Buffalo
(107437119) 
5:00 p.m.
Tilings without finite local complexity.
Lorenzo A Sadun*, University of Texas
(10743743) 
5:30 p.m.
Rigidity of Roe algebras.
Rufus Willett*, University of Hawaii
(10744791)

4:00 p.m.

Friday October 14, 2011, 4:00 p.m.5:50 p.m.
Special Session on Extremal and Probabilistic Combinatorics, I
Room 118, Avery Hall
Organizers:
Stephen Hartke, University of NebraskaLincoln hartke@math.unl.edu
Jamie Radcliffe, University of NebraskaLincoln

4:00 p.m.
Hitting random set systems.
Anant Godbole*, East Tennessee State University (ETSU)
Jessie Deering, ETSU
William Jamieson, ETSU
Lucia Petito, University of Rochester
(10740544) 
4:30 p.m.
The maximum size of a Sidon set contained in a sparse random set of integers.
Yoshiharu Kohayakawa, IME, University of Sao Paulo
Sangjune Lee*, Department of Math and CS, Emory University
Vojtech Rodl, Department of Math and CS, Emory University
(10740536) 
5:00 p.m.
Identification of strategies for liartype games via discrepancy from their linear approximations.
Joshua N. Cooper, University of South Carolina
Robert B. Ellis*, Illinois Institute of Technology
Daniel Tietzer, Illinois Institute of Technology
James Williamson, Illinois Institute of Technology
(107405271) 
5:30 p.m.
Cops and Robbers on Geometric Graphs.
Andrew Beveridge*, Macalester College
Andrzej Dudek, Western Michigan University
Alan Frieze, Carnegie Mellon University
Tobias Mueller, Centrum voor Wiskunde en Informatica
(107405227)

4:00 p.m.

Friday October 14, 2011, 4:00 p.m.5:50 p.m.
Special Session on Invariants in Knot Theory and Lowdimensional Topology, I
Room 109, Avery Hall
Organizers:
Mark Brittenham, University of NebraskaLincoln mbrittenham2@math.unl.edu
Robert Todd, University of NebraskaOmaha rtodd@unomaha.edu

4:00 p.m.
Width is not additive.
Ryan Blair, University of Pennsylvania
Maggy Tomova*, The University of Iowa
(107457242) 
4:30 p.m.
A categorification of the Tutte polynomial.
Moshe Cohen, BarIlan University
Adam Lowrance*, University of Iowa
(107457196) 
5:00 p.m.
Rightveering automorphisms of surfaces and overtwisted contact structures.
Rachel Roberts*, Washington University in St Louis
William H. Kazez, University of Georgia
(107457224) 
5:30 p.m.
Cosmetic surgery on links and the link volume of hyperbolic 3manifolds.
Yo'av Rieck*, University of Arkansas
Yasushi Yamashita, Nara Women's University
(107457151)

4:00 p.m.

Friday October 14, 2011, 4:00 p.m.5:50 p.m.
Special Session on Local Commutative Algebra, I
Room 103, Burnett Hall
Organizers:
H. Ananthnarayan, University of NebraskaLincoln ahariharan2@math.unl.edu
Inês B. Henriques, University of California Riverside
Hamid Rahmati, Syracuse University

4:00 p.m.
Bounds on the first Hilbert coefficient.
Craig Huneke*, University of Kansas
Krishna Hanumanthu, Chennai Mathematical Institute
(10741357) 
4:30 p.m.
Graded CohenMacaulayness for rings graded by arbitrary abelian groups.
Brian Johnson*, University of NebraskaLincoln
(107413244) 
5:00 p.m.
Regularity and Gorensteinness of fiber cone.
Jayanthan V Aryampilly*, Indian Institute of Technology Madras, INDIA.
(107413117) 
5:30 p.m.
Some relations between countable CohenMacaulay representation type and superstreched.
Branden Stone*, University of Kansas
(107413316)

4:00 p.m.

Friday October 14, 2011, 4:00 p.m.5:45 p.m.
Special Session on Quantum Groups and Representation Theory, I
Room 111, Avery Hall
Organizers:
Jonathan Kujawa, University of Oklahoma kujawa@ou.edu
Natasha Rozhkovskaya, Kansas State University

4:00 p.m.
Representations of quantum affine groups.
Evgeny Mukhin*, Indiana University Purdue University Indianapolis
(107422164) 
5:00 p.m.
Capellitype identities and duality of Bethe algebras.
Vitaly Tarasov*, Department of Mathematical Sciences, Indiana University  Purdue University Indianapolis
(107417266)

4:00 p.m.

Friday October 14, 2011, 4:00 p.m.5:50 p.m.
Special Session on Recent Progress in Operator Algebras, I
Room 120, Burnett Hall
Organizers:
Allan P. Donsig, University of NebraskaLincoln adonsig1@unl.edu
David R. Pitts, University of NebraskaLincoln

4:00 p.m.
Invariants for operator algebras of topological dynamics (Preliminary Report).
Benton L Duncan*, North Dakota State University
(10744654) 
4:30 p.m.
Spectral triples for equicontinuous actions and metrics on state spaces.
Kamran Reihani*, Department of Mathematics, University of Kansas
(10744658) 
5:00 p.m.
Pseudo Diagonals of C*Algebras.
Gabriel Nagy, Kansas State University
Sarah A Reznikoff*, Kansas State University
(107446333) 
5:30 p.m.
Operator algebras from abelian semigroup actions.
Justin R Peters*, Iowa State University
(107447186)

4:00 p.m.

Friday October 14, 2011, 5:00 p.m.5:50 p.m.
Special Session on Matrices and Graphs, I
Room 112, Avery Hall
Organizers:
InJae Kim, Minnesota State University injae.kim@mnsu.edu
Adam Berliner, St. Olaf College
Leslie Hogben, Iowa State University
Bryan Shader, University of Wyoming

5:00 p.m.
Positive semidefinite maximum nullity is equal to positive semidefinite zero forcing number for partial $2$trees.
Jason Ekstrand, Department of Mathematics, Iowa State University
Craig Erickson*, Department of Mathematics, Iowa State University
Diana Hay, Department of Mathematics, Iowa State University
Leslie Hogben, Department of Mathematics, Iowa State University
Jolie Roat, Department of Mathematics, Iowa State University
(107405153) 
5:30 p.m.
Positive Semidefinite Zero Forcing.
Travis A. Peters*, Iowa State University
(10741564)

5:00 p.m.

Friday October 14, 2011, 8:30 p.m.9:30 p.m.
Graduate Student Poster Session
Ballroom, Downtown Holiday Inn
Saturday October 15, 2011

Saturday October 15, 2011, 7:30 a.m.4:00 p.m.
Book sale and exhibit.
B13 Math Resource Room, Avery Hall 
Saturday October 15, 2011, 7:30 a.m.4:00 p.m.
Sectional Meeting Registration.
Lobby Area  Level 0  Avery Hall, Avery Hall 
Saturday October 15, 2011, 8:00 a.m.10:50 a.m.
Special Session on Algebraic Geometry and Graded Commutative Algebra, I
Room 103, Burnett Hall
Organizers:
Susan Cooper, Central Michigan University s.cooper@cmich.edu
Brian Harbourne, University of NebraskaLincoln

8:00 a.m.
Gorenstein algebras presented by quadrics.
Juan Migliore, University of Notre Dame
Uwe Nagel*, University of Kentucky
(107413165) 
8:30 a.m.
On the Interval Property in algebra and combinatorics.
Fabrizio Zanello*, MIT and Michigan Tech
(10741334) 
9:00 a.m.
Logconcavity of asymptotic multigraded Hilbert series.
Gregory G Smith*, Queen's University
Adam McCabe, University of Toronto
(107413142) 
9:30 a.m.
New examples of defective secant varieties of SegreVeronese varieties.
Hirotachi Abo*, University of Idaho
Maria Chiara Brambilla, Universita Politecnica Delle Marche
(107414173) 
10:00 a.m.
Bounding projective dimension and regularity.
Alexandra Seceleanu*, University of NebraskaLincoln
Jesse Beder, University of Illinois at UrbanaChampaign
Jason McCullough, University of California, Riverside
Luis NunezBetancourt, University of Michigan
Bart Snapp, Ohio State University
Brandon Stone, University of Kansas
(107413199) 
10:30 a.m.
CohenMacaulay Toric Rings Arising from Finite Graphs.
Augustine B O'Keefe*, Tulane University
Huy TÃ i HÃ, Tulane University
(107413291)

8:00 a.m.

Saturday October 15, 2011, 8:00 a.m.10:50 a.m.
Special Session on Algorithmic and Geometric Properties of Groups and Semigroups, II
Room 119, Avery Hall
Organizers:
Susan Hermiller, University of NebraskaLincoln shermiller2@math.unl.edu
John Meakin, University of NebraskaLincoln

8:00 a.m.
Solving equations in the Grigorchuk group G.
Alexei Miasnikov*, Stevens Institute of Technology
(107420308) 
8:30 a.m.
Schreier graphs and Schreier dynamical system of the action of Thompson's group $F$ on the Cantor set.
Dmytro M Savchuk*, Binghamton University
(107420296) 
9:00 a.m.
A Type B version of Thompson's Group F.
Sonja Mitchell*, University of California at Santa Barbara
(107420177) 
9:30 a.m.
WeaklyRuinous and StronglyThin Subsets of Richard Thompson's Group F.
John Donnelly*, University of Southern Indiana
(107420136) 
10:00 a.m.
Fine asymptotic geometry in the Heisenberg group.
Moon Duchin*, Tufts University
Christopher Mooney, Bradley University
(10742073) 
10:30 a.m.
Aspherical groups and manifolds with extreme properties.
Mark Sapir*, Vanderbilt University
(10742038)

8:00 a.m.

Saturday October 15, 2011, 8:00 a.m.10:50 a.m.
Special Session on Association Schemes and Related Topics, II
Room 108, Avery Hall
Organizers:
Sung Y. Song, Iowa State University sysong@iastate.edu
Paul Terwilliger, University of Wisconsin Madison

8:00 a.m.
Sylow theory for quasigroups.
Jonathan D.H. Smith*, Department of Mathematics, Iowa State University
(107420225) 
8:30 a.m.
$2$Srings of groups and generalizations.
Kenneth W Johnson*, The Pennsylvania State University, Abington College
(107420197) 
9:00 a.m.
Two commuting operators associated with a tridiagonal pair.
Sarah R. Bockting*, University of Wisconsin  Madison
(107405319) 
9:30 a.m.
Connections with BLTsets.
Eric M. Nelson*, Colorado State University
(107405229) 
10:00 a.m.
Bidiagonal pairs, the Lie algebra $\mathfrak{sl}_2$, and the quantum group $U_q(\mathfrak{sl}_2)$.
Darren R. FunkNeubauer*, Colorado State University  Pueblo
(107415257) 
10:30 a.m.
All simple groups are characterized by their noncommuting graphs.
Ron Solomn, The Ohio State University
Andrew Woldar*, Villanova University
(107405178)

8:00 a.m.

Saturday October 15, 2011, 8:00 a.m.10:50 a.m.
Special Session on Asymptotic Behavior and Regularity for Nonlinear Evolution Equations, II
Room 204, Burnett Hall
Organizers:
Petronela Radu, University of NebraskaLincoln pradu@math.unl.edu
Lorena Bociu, University of NebraskaLincoln

8:00 a.m.
Variational theory for some nonlocal problems.
Tadele A Mengesha*, Penn State University
(107445306) 
8:30 a.m.
The role of curvature and nonlinearities in stability of waves on compact surfaces.
Marcelo M Cavalcanti*, State University of Maringa
(10743582) 
9:00 a.m.
Existence and stability of viscoelastic shock profiles.
Marta Lewicka*, University of Pittsburgh
(107435248) 
9:30 a.m.
Stability of planar interfaces in twophase porous media flow.
Michael Shearer*, NC State University
Kim Spayd, NC State University
Zhengzheng Hu, NC State University
(107435114) 
10:00 a.m.
Decay of solutions to damped Kortewegde Vries type equation.
Valeria N Domingos Cavalcanti*, State University of Maringa
(10743583) 
10:30 a.m.
A Liouville comparison principle for entire weak sub and supersolutions of the equation $w_t\Delta_p (w) = w^{q1}w$.
Vasilii V. Kurta*, Mathematical Reviews, 416 Fourth Street, P.O. Box 8604, Ann Arbor, MI 48107, USA
(10743529)

8:00 a.m.

Saturday October 15, 2011, 8:00 a.m.10:50 a.m.
Special Session on Commutative Algebra, II
Room 107, Burnett Hall
Organizers:
Christina EubanksTurner, University of Louisiana at Lafayette ceturner@louisiana.edu
Aihua Li, Montclair State University

8:00 a.m.
Star (prime) operations on Noetherian domains.
Evan G Houston*, Univ. of NC at Charlotte
(10741398) 
8:30 a.m.
On the number of generators for ideals in rings of integervalued polynomials.
Lee Klingler*, Florida Atlantic University
Yuri Villanueva, Florida Atlantic University
(10741346) 
9:00 a.m.
Questions on symbolic powers.
Craig Huneke*, University of Kansas
Brian Harbourne, University of Nebraska
(10741359) 
9:30 a.m.
Topological and geometric criteria for irredundancy of an intersection of valuation rings.
Bruce M Olberding*, New Mexico State University
(107413221) 
10:00 a.m.
Ideals that are an irredundant union of principal ideals.
D. D. Anderson*, The University of Iowa
Sangmin Chun, Seoul National University
(10741380) 
10:30 a.m.
Nakayama's Lemma for Ext and Ascent for Module Structures.
Ben J Anderson*, North Dakota State University
Sean SatherWagstaff, North Dakota State University
(107413251)

8:00 a.m.

Saturday October 15, 2011, 8:00 a.m.10:50 a.m.
Special Session on Computational and Applied Mathematics, II
Room 124, Burnett Hall
Organizers:
Ludwig Kohaupt, Beuth University of Technology Berlin, Germany kohaupt@bhtberlin.de
Yan Wu, Georgia Southern University

8:00 a.m.
Controllability and Observability of Matrix Differential Algebraic Equations.
Yan Wu*, Department of Mathematical Sciences/Georgia Southern University
(10749332) 
8:30 a.m.
Stability results for sizestructured population dynamics models with maturation.
M. ElDoma*, University of Khartoum, Faculty of Mathematical Sciences, KhartoumSudan
(10749211) 
9:00 a.m.
An potentialtheoretic construction of the SchwarzChristoffel map for multiply connected domains.
Valentin V Andreev, Lamar University
Timothy H McNicholl*, Lamar University
(10743023) 
9:30 a.m.
Construction of Green's functions for twodimensional Laplace equation in spherical coordinates.
Volodymyr Borodin*, Middle Tennessee State University
(107435124) 
10:00 a.m.
Green's functionsbased approach to the representation of elementary functions by infinite products.
Yuri A. Melnikov*, Professor of Mathematics, Middle Tennessee State University, Murfreesboro, TN 37132
(107465219) 
10:30 a.m.
Mixedenhanced quadrilateral finite elements with Wachspresstype functions.
Reinhard Piltner*, Department of Mathematical Sciences, Georgia Southern University
Lixin Li, Department of Computer Sciences, Georgia Southern University
(107474174)

8:00 a.m.

Saturday October 15, 2011, 8:00 a.m.10:50 a.m.
Special Session on Continuous and Numerical Analysis in the Control of PDE's, II
Room 203, Burnett Hall
Organizers:
George Avalos, University of NebraskaLincoln
Mohammad Rammaha, University of NebraskaLincoln
Daniel Toundykov, University of NebraskaLincoln dtoundykov2@unl.edu

8:00 a.m.
Global regularity and scattering for quadratic KleinGordon equation in two space dimensions.
Atanas G. Stefanov*, University of Kansas
Vladimir Georgiev, University of Pisa, Italy
(107435267) 
8:30 a.m.
On the unique continuation for some hyperbolic systems of PDE with timeindependent $C^1$coefficients.
Matthias Eller*, Department of Mathematics, Georgetown University
(107435236) 
9:00 a.m.
Controlling the Constraints in Hyperbolic Evolution Systems.
Nicolae Tarfulea*, Purdue University Calumet
(107435116) 
9:30 a.m.
Optimal source selection and sparsity regularization in diffuse optical tomography.
Jack Cooper*, Clemson University
(107435311) 
10:00 a.m.
On the computation of tracking initial condition.
YuMin Chung*, Mathematics Dept., Indiana UniversityBloomington
(107465193) 
10:30 a.m.
Infinitesimal isometries on developable surfaces and asymptotic theories of elastic developable films.
Marta Lewicka*, University of Pittsburgh
(107449247)

8:00 a.m.

Saturday October 15, 2011, 8:00 a.m.10:50 a.m.
Special Session on Dynamic Systems on Time Scales with Applications, II
Room 118, Burnett Hall
Organizers:
Lynn Erbe, University of NebraskaLincoln lerbe@math.unl.edu
Allan Peterson, University of NebraskaLincoln

8:00 a.m.
Existence of positive solutions of $2n$th order system periodic boundary value problems via eigenvalue approach.
Qingkai Kong, Northern Illinois University
Min Wang*, University of Tennessee at Chattanooga
(107434122) 
8:30 a.m.
Gronwall's Inequality on Discrete Fractional Calculus.
Ferhan M. Atici*, Western Kentucky University, Bowling Green, KY.
Paul W. Eloe, University of Dayton, Dayton, OH.
(107439111) 
9:00 a.m.
Oscillation of a SecondOrder Linear Delay Dynamic Equation.
Raegan Higgins*, Texas Tech University
(107439190) 
9:30 a.m.
The Rational Expectations: A New Formulation of the SingleEquation Model on Time Scales.
Funda Ekiz*, Western Kentucky University, Bowling Green, KY
Ferhan M. Atici, Western Kentucky University, Bowling Green, KY
(107439181) 
10:00 a.m.
Periodic solutions of a secondorder differential equation with $p$Laplacian operator.
Eric R Kaufmann*, University of Arkansas at Little Rock
(107434245) 
10:30 a.m.
Using time scales to study multiinterval SturmLiouville problems with interface conditions.
Qingkai Kong*, Northern Illinois University
QiRu Wang, Zhongshan University, P. R. China
(10743472)

8:00 a.m.

Saturday October 15, 2011, 8:00 a.m.10:50 a.m.
Special Session on Dynamical Systems and Operator Algebras, II
Room 119, Burnett Hall
Organizers:
Lewis Bowen, Texas A&M University lpbowen@math.tamu.edu
David Kerr, Texas A&M University

8:00 a.m.
Further Results on Strong Singularity for Subfactors.
Alan Wiggins*, University of MichiganDearborn
(107446233) 
8:30 a.m.
The radius of comparison for crossed products and mean topological dimension.
Taylor Hines*, Purdue University
Andrew Toms, Purdue University
(107446157) 
9:00 a.m.
Von Neumann Algebras of Hyperbolic Groups.
Ionut Chifan, University of Iowa
Thomas Sinclair*, UCLA
(107446239) 
10:00 a.m.
Orbital equivalence relation on tiling spaces.
Antoine Julien*, University of Victoria (Canada)
(107437324) 
10:30 a.m.
The Spectrum of Groupoid $C^*$algebras.
Geoff R Goehle*, Western Carolina University
(107447128)

8:00 a.m.

Saturday October 15, 2011, 8:00 a.m.10:50 a.m.
Special Session on Matrices and Graphs, II
Room 112, Avery Hall
Organizers:
InJae Kim, Minnesota State University injae.kim@mnsu.edu
Adam Berliner, St. Olaf College
Leslie Hogben, Iowa State University
Bryan Shader, University of Wyoming

8:00 a.m.
Bounding inertia sets of graphs.
Steve Butler*, Iowa State University
(107415176) 
9:00 a.m.
The Inverse Inertia Problem for an Outerplanar Graph.
John Sinkovic*, Brigham Young University
(107415330) 
9:30 a.m.
Minimum Skew Rank of Some Outerplanar Graphs.
Luz M. DeAlba*, Drake University
(10740551) 
10:00 a.m.
The Inverse Eigenvalue Problem for Graphs of Low Minimum Rank.
Wayne Barrett*, Department of Mathematics, Brigham Young University
Seth Gibelyou, Provo, Utah
Mark Kempton, Department of Mathematics, University of California, San Diego
Nicole Malloy, Department of Mathematics, Brigham Young University
Curtis Nelson, Department of Mathematics, Brigham Young University
William Sexton, Department of Mathematics, Brigham Young University
John Sinkovic, Department of Mathematics, Brigham Young University
(107415103) 
10:30 a.m.
Bounds for minimum rank problems from superpositions and cut sets.
Sivaram K. Narayan*, Central Michigan University
(10741519)

8:00 a.m.

Saturday October 15, 2011, 8:00 a.m.10:50 a.m.
Special Session on Quantum Groups and Representation Theory, II
Room 111, Avery Hall
Organizers:
Jonathan Kujawa, University of Oklahoma kujawa@ou.edu
Natasha Rozhkovskaya, Kansas State University

8:00 a.m.
Cohomological detection for Lie superalgebras with applications to support varieties.
Daniel K. Nakano*, University of Georgia
(10741755) 
9:00 a.m.
Yangians and quantum loop algebras.
Sachin Gautam*, Columbia University
(107481145) 
9:30 a.m.
Support varieties and representation type of selfinjective algebras.
Joerg Feldvoss*, Department of Mathematics and Statistics, University of South Alabama, Mobile, AL 36688
Sarah Witherspoon, Department of Mathematics, Texas A&M University, College Station
(107416123) 
10:00 a.m.
Some quantum analogues of results from Lie algebra cohomology.
Christopher M. Drupieski*, University of Georgia
(10741793) 
10:30 a.m.
Cohomology for infinitesimal unipotent algebraic and quantum groups.
Christopher M. Drupieski, University of Georgia
Daniel K. Nakano, University of Georgia
Nham V. Ngo*, University of Georgia
(10742005)

8:00 a.m.

Saturday October 15, 2011, 8:30 a.m.10:50 a.m.
Special Session on Coding Theory, II
Room 110, Avery Hall
Organizers:
Christine Kelley, University of NebraskaLincoln ckelley2@math.unl.edu
Judy Walker, University of NebraskaLincoln

8:30 a.m.
Dualizing Trellises for Linear Block Codes.
Elizabeth A Weaver*, University of Kentucky
(10749497) 
9:00 a.m.
Enumerating Trellis Pseudocodewords.
David Conti*, Claude Shannon Institute and School Of Mathematical Sciences, UCD, Dublin, Ireland
(107494293) 
9:30 a.m.
Pseudocodewords and pseudoweights.
Nigel Boston*, University of Wisconsin  Madison
(107494295) 
10:00 a.m.
On enumerating the pseudocodewords of a paritycheck codes.
Wittawat Kositwattanarerk*, Clemson University
Gretchen L Matthews, Clemson University
(107494149) 
10:30 a.m.
Can pseudocodewords be used to increase communication rates?
Nathan Axvig*, Virginia Military Institute
(10749420)

8:30 a.m.

Saturday October 15, 2011, 8:30 a.m.10:50 a.m.
Special Session on Extremal and Probabilistic Combinatorics, II
Room 118, Avery Hall
Organizers:
Stephen Hartke, University of NebraskaLincoln hartke@math.unl.edu
Jamie Radcliffe, University of NebraskaLincoln

8:30 a.m.
The Chinese Postman Problem in regular graphs of odd degree.
Suil O, College of William and Mary
Douglas B. West*, University of Illinois  Urbana
(107405194) 
9:00 a.m.
Residues and independence numbers of unigraphs.
Michael D. Barrus*, Black Hills State University
(107405256) 
9:30 a.m.
Pancyclicity of 4Connected, ClawFree, $P_{10}$Free Graphs.
Michael Ferrara*, University of Colorado Denver
TImothy Morris, University of Colorado Denver
Paul Wenger, University of Colorado Denver
(107405156) 
10:00 a.m.
Finding Large Induced Subgraphs.
Hemanshu Kaul*, Illinois Institute of Technology
(107405318) 
10:30 a.m.
On the edit distance for $K_{2,t}$free graphs.
Ryan R. Martin*, Iowa State University
Tracy McKay, Iowa State University
(107405175)

8:30 a.m.

Saturday October 15, 2011, 8:30 a.m.10:50 a.m.
Special Session on Local Commutative Algebra, II
Room 115, Burnett Hall
Organizers:
H. Ananthnarayan, University of NebraskaLincoln ahariharan2@math.unl.edu
Inês B. Henriques, University of California Riverside
Hamid Rahmati, Syracuse University

8:30 a.m.
Target elements and test ideals.
Melvin Hochster*, Department of Mathematics, University of Michigan, Ann Arbor
Wenliang Zhang, Department of Mathematics, University of Michigan, Ann Arbor
(107413215) 
9:00 a.m.
$F$pure thresholds of hypersurfaces.
Bhargav Bhatt, University of Michigan
Anurag K Singh*, University of Utah
(107413200) 
9:30 a.m.
The weak Lefschetz property for monomial complete intersections in positive characteristic.
Andy Kustin, University of South Carolina
Adela Vraciu*, University of South Carolina
(107413163) 
10:00 a.m.
Local cohomology and $G$modules.
Emily E Witt*, University of Minnesota
(107413286) 
10:30 a.m.
DG Ext and Yoneda Ext for DG modules.
Saeed Nasseh*, North Dakota State University
Sean SatherWagstaff, North Dakota State University
(107413146)

8:30 a.m.

Saturday October 15, 2011, 9:00 a.m.10:50 a.m.
Special Session on Discrete Methods and Models in Biomathematics, II
Room 121, Burnett Hall
Organizers:
Dora Matache, University of NebraskaOmaha
Jim Rogers, University of NebraskaOmaha
Alan VelizCuba, University of NebraskaLincoln avelizcuba2@unl.edu

9:00 a.m.
Dynamical and structural analysis of a T cell survival network identifies novel candidate therapeutic targets for large granular lymphocyte leukemia.
Assieh Saadatpour*, Department of Mathematics, The Pennsylvania State University, University Park, PA
RuiSheng Wang, Department of Physics, The Pennsylvania State University, University Park, PA
Aijun Liao, Penn State Hershey Cancer Institute, The Pennsylvania State University College of Medicine, Hershey, PA
Xin Liu, Penn State Hershey Cancer Institute, The Pennsylvania State University College of Medicine, Hershey, PA
Thomas P Loughran, Penn State Hershey Cancer Institute, The Pennsylvania State University College of Medicine, Hershey, PA
Istvan Albert, Department of Biochemistry and Molecular Biology, The Pennsylvania State University, University Park, PA
Reka Albert, Department of Physics, The Pennsylvania State University, University Park, PA
(107492100) 
9:30 a.m.
Testing for fragment bias in highthroughput sequencing experiments.
Valerie Hower*, University of California, Berkeley
Lior Pachter, University of California, Berkeley
Richard Starfield, University of California, Berkeley
(107492230) 
10:00 a.m.
Reverse Engineering of Discrete Models Using Algebraic Geometry.
Alan VelizCuba*, University of NebraskaLincoln
(107414290) 
10:30 a.m.
Using distance geometry to encode memory patterns in neuronal networks.
Carina Curto*, University of NebraskaLincoln
(107492298)

9:00 a.m.

Saturday October 15, 2011, 9:00 a.m.10:50 a.m.
Special Session on Invariants in Knot Theory and Lowdimensional Topology, II
Room 109, Avery Hall
Organizers:
Mark Brittenham, University of NebraskaLincoln mbrittenham2@math.unl.edu
Robert Todd, University of NebraskaOmaha rtodd@unomaha.edu

9:00 a.m.
RogersRamanujan type identities coming from the colored Jones polynomial.
Oliver T Dasbach*, Louisiana State University
Cody Armond, Louisiana State University
(107457268) 
9:30 a.m.
Open book foliations and contact manifolds.
Keiko Kawamuro*, University of Iowa
(107457113) 
10:00 a.m.
The Kauffman polynomial and trivalent graphs.
Carmen Caprau*, California State University, Fresno
James Tipton, The University of Iowa
(10745745) 
10:30 a.m.
Minimal triangulations for infinite families of 3manifolds.
William H. Jaco*, Oklahoma State University
Jesse Johnson, Oklahoma State University
Stephan Tillmann, University of Queensland
(107457162)

9:00 a.m.

Saturday October 15, 2011, 9:00 a.m.10:45 a.m.
Special Session on Recent Directions in Number Theory, I
Room 106, Avery Hall
Organizers:
Alina Cojocaru, University of Illinois at Chicago
Michael Zieve, University of Michigan zieve@umich.edu

9:00 a.m.
Expander Graphs in Arithmetic Geometry.
Jordan S. Ellenberg, University of Wisconsin
Chris Hall*, University of Wyoming
Emmanuel Kowalski, ETH Zurich
(107411235) 
10:00 a.m.
Lfunctions of families of toric exponential sums.
C. Douglas Haessig*, University of Rochester, New York
(10741170)

9:00 a.m.

Saturday October 15, 2011, 9:00 a.m.10:50 a.m.
Special Session on Recent Progress in Operator Algebras, II
Room 120, Burnett Hall
Organizers:
Allan P. Donsig, University of NebraskaLincoln adonsig1@unl.edu
David R. Pitts, University of NebraskaLincoln

9:00 a.m.
Isomorphism of noncommutative domain algebras.
Alvaro Arias*, University of Denver
Frederic Latremoliere, University of Denver
(107447195) 
9:30 a.m.
Aperiodicity Conditions in Topological $k$Graphs.
Sarah E Wright*, College of the Holy Cross
(10744695) 
10:00 a.m.
Perturbations of crossed product II$_1$ factors.
Jan M. Cameron*, Vassar College
(107447300) 
10:30 a.m.
Combinatorial Algebra for Normed Structures.
Will Grilliette*, Alfred University
(107447260)

9:00 a.m.

Saturday October 15, 2011, 11:05 a.m.11:55 a.m.
Invited Address
Questions about the reductions modulo primes of an elliptic curve.
Room 115, Avery Hall
Alina Cojocaru*, University of Illinois at Chicago and Mathematics Institute of the Romanian Academy
(10741102) 
Saturday October 15, 2011, 1:25 p.m.2:15 p.m.
Invited Address
The happy marriage between arithmetic geometry and dynamical systems.
Room 115, Avery Hall
Michael Zieve*, University of Michigan
(10741103) 
Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Algebraic Geometry and Graded Commutative Algebra, II
Room 103, Burnett Hall
Organizers:
Susan Cooper, Central Michigan University s.cooper@cmich.edu
Brian Harbourne, University of NebraskaLincoln

2:30 p.m.
Stabilization of multigraded Betti numbers.
Tai H Ha*, Tulane University
(10741377) 
3:00 p.m.
Resurgence and related questions for two intersecting lines in $\mathbb{P}^2$.
Annika Denkert*, University of NebraskaLincoln
(107414274) 
3:30 p.m.
Toward a schemetheoretic LittlewoodRichardson rule.
Nickolas Hein*, Texas A&M University
(10741449) 
4:00 p.m.
A Generalized Hochster's Theta Function.
W. Frank Moore, Wake Forest University
Greg Peipmeyer, University of Missouri
Mark E. Walker, University of Nebraska
Sandra Spiroff*, University of Mississippi
(107413133)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Algorithmic and Geometric Properties of Groups and Semigroups, III
Room 119, Avery Hall
Organizers:
Susan Hermiller, University of NebraskaLincoln shermiller2@math.unl.edu
John Meakin, University of NebraskaLincoln

2:30 p.m.
Spectral rigidity of automorphic orbits in free groups.
Ilya Kapovich*, University of Illinois at UrbanaChampaign
Mathieu Carette, Université catholique de Louvain
Stefano Francaviglia, Department of Mathematics, University of Bologna
Armando Martino, School of Mathematics, University of Southampton
(10742063) 
3:00 p.m.
Towards the Second Integral Homology of $IA_3$.
Owen Baker*, McMaster University
(107420189) 
3:30 p.m.
On the linearity of automorphism groups of rightangled Artin groups.
Hanna Bennett*, University of Michigan
(107420232) 
4:00 p.m.
On restricting free factors in relatively free groups.
Lucas Sabalka*, Binghamton University
Dmytro Savchuk, Binghamton University
(107420141)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Association Schemes and Related Topics, III
Room 108, Avery Hall
Organizers:
Sung Y. Song, Iowa State University sysong@iastate.edu
Paul Terwilliger, University of Wisconsin Madison

2:30 p.m.
Constructions of coherent configurations from finite geometries.
Sylvia A. Hobart*, University of Wyoming
(107405301) 
3:00 p.m.
A characterization of Leonard pairs using the parameters ${a_{i}}_{i=0}^{d}$.
Edward D. Hanson*, University of WisconsinMadison
(107415170) 
3:30 p.m.
Terwilliger algebras of Bol loops.
Brian W Curtin*, University of South Florida
(107405144) 
4:00 p.m.
Projective planes in which every quadrangle lies on a unique Baer subplane.
Tim Penttila*, Colorado State University
(10740560)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Asymptotic Behavior and Regularity for Nonlinear Evolution Equations, III
Room 204, Burnett Hall
Organizers:
Petronela Radu, University of NebraskaLincoln pradu@math.unl.edu
Lorena Bociu, University of NebraskaLincoln

2:30 p.m.
On the Asymptotic Behavior of Strongly Damped Wave Equations.
Ryo Ikehata, Hiroshima University, Japan
Grozdena Todorova, University of TennesseeKnoxville, TN
Borislav Yordanov*, University of TennesseeKnoxville, TN
(107435292) 
3:00 p.m.
Instability of steady states for damped nonlinear wave equations.
Stephen Pankavich*, United States Naval Academy
Petronela Radu, University of Nebraska, Lincoln
(107435125) 
3:30 p.m.
Uniform stablization for semilinear system of elasticity with nonlinear Neumann boundary damping.
Jing Zhang*, University of Virginia
Irena Lasiecka, University of Virginia
(10743586) 
4:00 p.m.
On a coupled system of incompressible fluid and nonlinear elasticity.
Lorena V Bociu*, NCSU
JeanPaul Zolesio, CNRSINLN
(107435130)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.3:50 p.m.
Special Session on Coding Theory, III
Room 110, Avery Hall
Organizers:
Christine Kelley, University of NebraskaLincoln ckelley2@math.unl.edu
Judy Walker, University of NebraskaLincoln

2:30 p.m.
Analysis and Design of Two Edge Type LDPC Codes for the BEC Wiretap Channel.
Vishwambhar Rathi, Royal Institute of Technology
Mattias Andersson, Royal Institute of Technology
Ragnar Thobaben, Royal Institute of Technology
Joerg Kliewer*, New Mexico State University
Mikael Skoglund, Royal Institute of Technology
(107494263) 
3:00 p.m.
Designing highrate codes for flash memories with increased rewrites.
Kathryn A Haymaker*, University of Nebraska  Lincoln
(107494275) 
3:30 p.m.
Constructions of codes in permutations.
Alexander Barg*, University of Maryland
Arya Mazumdar, University of Maryland/MIT
Gilles Zemor, University of Bordeaux
(107494321)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Commutative Algebra, III
Room 107, Burnett Hall
Organizers:
Christina EubanksTurner, University of Louisiana at Lafayette ceturner@louisiana.edu
Aihua Li, Montclair State University

2:30 p.m.
New Directions in BoijSöderberg Theory.
Courtney Gibbons*, University of NebraskaLincoln
(10741379) 
3:00 p.m.
Ultrafilter closures of collections of valuation domains.
K Alan Loper*, Ohio State University
Carmelo Finocchiaro, University of Rome 3
(107413262) 
3:30 p.m.
Hilbert Coefficients of Parameter Ideals.
Lori A McDonnell*, Ashland University
(107413234) 
4:00 p.m.
Characterizing the ring extensions that satisfy FIP or FCP.
David E. Dobbs*, University of Tennessee
Gabriel Picavet, Universite Blaise Pascal
Martine PicavetL'Hermitte, Universite Blaise Pascal
(10741342)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Computational and Applied Mathematics, III
Room 124, Burnett Hall
Organizers:
Ludwig Kohaupt, Beuth University of Technology Berlin, Germany kohaupt@bhtberlin.de
Yan Wu, Georgia Southern University

2:30 p.m.
Time scale choices on shape functionbased spatiotemporal interpolation method for evaluating population exposure to fine particulate matter pollution.
Lixin Li*, Department of Computer Sciences, Georgia Southern University
(107468168) 
3:00 p.m.
Measuring the Impact of Time Scale Choice on Spatiotemporal Interpolation using Parallel Computing.
Derek Ratcliff*, Department of Computer Sciences, Georgia Southern University
Lixin Li, Department of Computer Sciences, Georgia Southern University
Robert Cook, Department of Computer Sciences, Georgia Southern University
(107468147) 
3:30 p.m.
A piecewise linear maximum entropy method for calculating invariant measures of interval mappings.
J. Ding*, University of Southern Mississippi
N. Rhee, University of Missouri atKansas City
(10746509) 
4:00 p.m.
Classification of gene regulatory networks.
Jonas Denissen*, Freie Universität Berlin
(107492216)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Continuous and Numerical Analysis in the Control of PDE's, III
Room 203, Burnett Hall
Organizers:
George Avalos, University of NebraskaLincoln
Mohammad Rammaha, University of NebraskaLincoln
Daniel Toundykov, University of NebraskaLincoln dtoundykov2@unl.edu

2:30 p.m.
Exact controllability for multilayer RaoNakra beams and plates.
Scott W. Hansen*, Iowa State University
Ahmet Ozkan Ozer, University of Waterloo
(107493322) 
3:00 p.m.
Systems of Nonlinear Wave Equations with Damping and Supercritical Boundary and Interior Sources.
Yanqiu Guo*, University of NebraskaLincoln
Mohammad A. Rammaha, University of NebraskaLincoln
(107435109) 
3:30 p.m.
Wellposedness and Asymptotic Behavior of Nonlinear FlowStructure Interactions.
Justin T Webster*, University of Virginia
(10743590) 
4:00 p.m.
Attractor for a nondissipative von Karman plate with damping in free boundary conditions.
Bociu Lorena, North Carolina State University
Daniel Toundykov*, University of NebraskaLincoln
(10743588)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Discrete Methods and Models in Biomathematics, III
Room 121, Burnett Hall
Organizers:
Dora Matache, University of NebraskaOmaha
Jim Rogers, University of NebraskaOmaha
Alan VelizCuba, University of NebraskaLincoln avelizcuba2@unl.edu

2:30 p.m.
From network structure to neural code topology.
Vladimir Itskov*, UNL
(107492299) 
3:00 p.m.
Macrolevel modeling of the response of C. elegans reproduction to chronic heat stress.
Patrick D McMullen*, Department of Chemical and Biological Engineering, Northwestern University
Erin Z Aprison, Department of Ecology and Evolution, University of Chicago
Peter B Winter, Department of Chemical and Biological Engineering, Northwestern University
Luis AN Amaral, Department of Chemical and Biological Engineering, Northwestern University
Richard I Morimoto, Department of Molecular Biosciences, Northwestern University
Ilya Ruvinsky, Department of Ecology and Evolution, University of Chicago
(107400329) 
3:30 p.m.
Boolean Model of Budding Yeast Cell Cycle.
Robert Todd*, University of Nebraska at Omaha
Tomas Helikar, University of Nebraska at Omaha
(107492259) 
4:00 p.m.
The Cell Collective: A collaborative modeling platform for biological processes.
Tomas Helikar*, University of NebraskaOmaha
(107492310)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Dynamic Systems on Time Scales with Applications, III
Room 118, Burnett Hall
Organizers:
Lynn Erbe, University of NebraskaLincoln lerbe@math.unl.edu
Allan Peterson, University of NebraskaLincoln

2:30 p.m.
Existence of multiple solutions for a generalized discrete beam equation.
Lingju Kong*, University of Tennessee at Chattanooga
Qingkai Kong, Northern Illinois University
John R. Graef, University of Tennessee at Chattanooga
(107439135) 
3:00 p.m.
Poisson's inequality for a Dirichlet problem on a time scale.
Gro Hovhannisyan*, Kent State University
(10743566) 
3:30 p.m.
Existence of positive solutions of a two point boundary value problem for a singular nonlinear semipositone dynamic equations system.
Rajendra B Dahal*, Coastal Carolina University
(107439207) 
4:00 p.m.
Application of Time Scale Calculus to the Growth and Development in Populations of Stomoxys calcitrans.
Heidi Berger*, Simpson College
(107439261)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Dynamical Systems and Operator Algebras, III
Room 119, Burnett Hall
Organizers:
Lewis Bowen, Texas A&M University lpbowen@math.tamu.edu
David Kerr, Texas A&M University

2:30 p.m.
Algebraic and quasiequivalence of type III representations of simple nuclear C*algebras.
Ping Wong Ng*, University of Louisiana at Lafayette
(107446218) 
3:00 p.m.
Ergodic measures and characters of transformation groups.
Konstantin Medynets*, Ohio State University
(10743756) 
4:00 p.m.
$G$odometers and classification of $C^*$algebras.
José R. Carrión*, Purdue University
(107446284)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Extremal and Probabilistic Combinatorics, III
Room 118, Avery Hall
Organizers:
Stephen Hartke, University of NebraskaLincoln hartke@math.unl.edu
Jamie Radcliffe, University of NebraskaLincoln

2:30 p.m.
Degree Ramsey numbers of doublestars.
William B. Kinnersley*, University of Illinois at UrbanaChampaign
Kevin G. Milans, University of South Carolina
Douglas B. West, University of Illinois at UrbanaChampaign
(107405302) 
3:00 p.m.
AntiRamsey number of matchings in hypergraphs.
Michael Young*, Iowa State University
Lale Ozkahya, Iowa State University
(107405159) 
3:30 p.m.
$\delta(G)$Size Rainbow Matchings in Properly EdgeColored Graphs.
Jennifer Diemunsch, University of Colorado Denver
Michael Ferrara, University of Colorado Denver
Casey Moffatt, University of Colorado Denver
Florian Pfender, University of Rostock
Paul S Wenger*, University of Colorado Denver
(107405155) 
4:00 p.m.
Large Rainbow Matchings in Graphs.
A. Kostochka, University of Illinois at Urbana Champaign
M. Yancey*, University of Illinois at Urbana Champaign
(107405278)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Invariants in Knot Theory and Lowdimensional Topology, III
Room 109, Avery Hall
Organizers:
Mark Brittenham, University of NebraskaLincoln mbrittenham2@math.unl.edu
Robert Todd, University of NebraskaOmaha rtodd@unomaha.edu

2:30 p.m.
Combinatorial Floer Homology for Spatial Graphs.
Shelly Harvey*, Rice University
Danielle O'Donnol, Smith College
(107457166) 
3:00 p.m.
Bridge Numbers and Integral Surgery.
Kenneth L. Baker*, University of Miami
Cameron Gordon, University of Texas
John Luecke, University of Texas
(107457237) 
3:30 p.m.
Complements of line arrangements in the complex projective plane.
Kristopher Williams*, Doane College
(10745578) 
4:00 p.m.
Guts of surfaces and the colored Jones polynomial.
David Futer, Temple University
Efstratia Kalfagianni, Michigan State University
Jessica S Purcell*, Brigham Young University
(107457134)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Local Commutative Algebra, III
Room 115, Burnett Hall
Organizers:
H. Ananthnarayan, University of NebraskaLincoln ahariharan2@math.unl.edu
Inês B. Henriques, University of California Riverside
Hamid Rahmati, Syracuse University

2:30 p.m.
The bigraded structure of Symmetric Algebras with applications to Rees rings.
Andrew R. Kustin*, University of South Carolina
Claudia Polini, University of Notre Dame
Bernd Ulrich, Purdue University
(10741389) 
3:00 p.m.
Rees algebras of squarefree monomial ideals.
Louiza Fouli*, New Mexico State University
KueiNuan Lin, University of California, Riverside
(107413154) 
3:30 p.m.
On the CohenMacaulayness of the conormal module of an ideal.
Paolo Mantero*, Purdue Univeristy
Yu Xie, University of Notre Dame
(10741308) 
4:00 p.m.
Connected sums of simplicial complexes.
W. Frank Moore*, Wake Forest University
Tomoo Matsumura, KAIST
(107413327)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:15 p.m.
Special Session on Matrices and Graphs, III
Room 112, Avery Hall
Organizers:
InJae Kim, Minnesota State University injae.kim@mnsu.edu
Adam Berliner, St. Olaf College
Leslie Hogben, Iowa State University
Bryan Shader, University of Wyoming

2:30 p.m.
Propagation Times of Graphs.
My Huynh*, Arizona State University
(107415167) 
3:00 p.m.
Colin de Verdière parameters of chordal graphs.
Lon H Mitchell*, American Mathematical Society
Shaun M Fallat, University of Regina
(10740516) 
3:30 p.m.
Matrix classes: old and new.
Richard A. Brualdi*, University of Wisconsin, Madison
(10740553)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Quantum Groups and Representation Theory, III
Room 111, Avery Hall
Organizers:
Jonathan Kujawa, University of Oklahoma kujawa@ou.edu
Natasha Rozhkovskaya, Kansas State University

2:30 p.m.
Deformed Enveloping Algebras.
Yorck Sommerhäuser*, University of South Alabama
(107416320) 
3:00 p.m.
Tensor product varieties, perverse sheaves and stability conditions.
Yiqiang Li*, SUNY, Buffalo
(10741627) 
3:30 p.m.
Geometric approach to Hall algebra of representations of Quivers over local ring.
Zhaobing Fan*, Kansas State University
(107413115) 
4:00 p.m.
Crystal bases for the quantum queer superalgebra and semistandard decomposition tableaux.
Dimitar Grantcharov*, University of Texas at Arlington
Ji Hye Jung, Seoul National University
SeokJin Kang, Seoul National University
Masaki Kashiwara, Kyoto University
Myungho Kim, Seoul National University
(107417139)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:15 p.m.
Special Session on Recent Directions in Number Theory, II
Room 106, Avery Hall
Organizers:
Alina Cojocaru, University of Illinois at Chicago
Michael Zieve, University of Michigan zieve@umich.edu

2:30 p.m.
Binary theta series and modular forms with complex multiplication.
Ernst Kani*, Queen's University at Kingston
(107411171) 
3:30 p.m.
Automorphism groups of a family of maximal curves.
Bob Guralnick, U. Southern California
Beth Malmskog, Wesleyan
Rachel Pries*, Colorado State University
(10741199)

2:30 p.m.

Saturday October 15, 2011, 2:30 p.m.4:20 p.m.
Special Session on Recent Progress in Operator Algebras, III
Room 120, Burnett Hall
Organizers:
Allan P. Donsig, University of NebraskaLincoln adonsig1@unl.edu
David R. Pitts, University of NebraskaLincoln

2:30 p.m.
FugledeKadison determinants for operators in the von Neumann algebra of an equivalence relation.
Catalin Georgescu, University of South Dakota
Gabriel Picioroaga*, University of South Dakota
(10744747) 
3:00 p.m.
Viewing tight inverse semigroup algebras as partial crossed products.
David Milan*, The University of Texas at Tyler
Benjamin Steinberg, Carleton University
(107447283) 
3:30 p.m.
Second moments of unitaries in a II$_1$factor.
Kate Juschenko*, Texas A&M University
Kenneth Dykema, Texas A&M University
(107446332) 
4:00 p.m.
Contractive spectral triples for crossed products.
Alan L. Paterson*, University of Colorado, Boulder, Colorado 80309
(10744681)

2:30 p.m.

Saturday October 15, 2011, 3:00 p.m.4:25 p.m.
Session for Contributed Papers
Room 19, Avery Hall

3:15 p.m.
Analytical solution of Bessel differential equation.
Ali Abd Albaghdadi*, IraqBaghdad
(10743428) 
3:45 p.m.
The synchronization rate for exact $\epsilon$machines.
Nicholas F. Travers*, UC Davis
James P. Crutchfield, UC Davis
(107460184) 
4:00 p.m.
Effects of Pressure Stress Work and Viscous Dissipation in Mixed Convection Flow along a Vertical Flat Plate in Presence of Heat Generation.
Md Abdus Samad Bhuiyan*, Brock University
(107465285) 
4:15 p.m.
Perturbation theory for the approximation of stability spectra by QR methods for products of linear operators.
Mohamed Badawy*, University of Kansas
Erik S. Van Vleck, University of Kansas
(107465273)

3:15 p.m.

Saturday October 15, 2011, 4:40 p.m.5:30 p.m.
Erdős Memorial Lecture
Recovering the unseen: Some recent advances in lowrank matrix reconstruction.
Union Ballroom, Student Union Building
Emmanuel Candes*, Stanford University
(10744904) 
Saturday October 15, 2011, 5:30 p.m.6:30 p.m.
Erd\Hos Reception
Union Centennial Room, Student Union Building
Sunday October 16, 2011

Sunday October 16, 2011, 8:00 a.m.11:50 a.m.
Special Session on Algebraic Geometry and Graded Commutative Algebra, III
Room 103, Burnett Hall
Organizers:
Susan Cooper, Central Michigan University s.cooper@cmich.edu
Brian Harbourne, University of NebraskaLincoln

8:00 a.m.
A theorem in representation theory for DG algebras, with an application to a question of Vasconcelos.
Sean SatherWagstaff*, North Dakota State University
Saeed Nasseh, North Dakota State University
(10741376) 
8:30 a.m.
Generalizing the Borel condition.
Christopher Francisco*, Oklahoma State University
Jeffrey Mermin, Oklahoma State University
Jay Schweig, University of Kansas
(10741387) 
9:00 a.m.
Regularity of $(n2)$plane arrangements in $\mathbb{P}^n$ with a complete bipartite incidence graph.
Douglas A Torrance*, University of Idaho
Zach Teitler, Boise State University
(107414238) 
9:30 a.m.
Projective Monomial Curves in $\mathbb{P}^3$.
Leslie G. Roberts*, Queen's University, Kingston, Ontario
Ping Li, Department of Mathematics, Queen's University, Kingston, ON
(107414152) 
10:00 a.m.
Containment Problem for Points on a Reducible Conic in $\mathbb{P}^2$.
Mike Janssen*, University of NebraskaLincoln
(107414143) 
10:30 a.m.
Resolutions of monomial ideals using simplicial trees.
Sara Faridi*, Dalhousie University, Halifax, NS, Canada
(107413161) 
11:00 a.m.
Monomials as sums of powers.
Enrico Carlini*, Politecnico di Torino
Maria Virginia Catalisano, Universita' di Genova
Anthony V Geramita, Queen's University
(10741384) 
11:30 a.m.
Monomials as sums of powers  Part II.
Mats Boij, KTH, Stockholm, Sweden
Enrico Carlini, Politecnico di Torino
Maria Virginia Catalisano, Universita' di Genova
Anthony V. Geramita*, Queen's University (Kingston), Universita' di Genova
(107414192)

8:00 a.m.

Sunday October 16, 2011, 8:00 a.m.11:20 a.m.
Special Session on Algorithmic and Geometric Properties of Groups and Semigroups, IV
Room 119, Avery Hall
Organizers:
Susan Hermiller, University of NebraskaLincoln shermiller2@math.unl.edu
John Meakin, University of NebraskaLincoln

8:00 a.m.
Poset cohomology, Leray numbers and the global dimension of left regular bands.
Stuart W Margolis, BarIlan University
Franco Saliola, University of Quebec at Montreal
Benjamin Steinberg*, City College of New York
(10742061) 
8:30 a.m.
Promotion maps for group actions.
Max Forester*, University of Oklahoma
(107455282) 
9:00 a.m.
Ends of Semigroups.
Vesna Kilibarda*, Indiana University Northwest
Simon Craik, University of St Andrews
Robert D. Gray, University of St Andrews
Victor Maltcev, University of St Andrews
James D. Mitchell, University of St Andrews
Nik Ruskuc, University of St Andrews
(107420120) 
9:30 a.m.
Centralizers of finite subgroups of the mapping class group and almost fixed points in the curve complex.
Hao Liang*, University of Illinois at Chicago
(107420127) 
10:00 a.m.
$\mathbb{Z}^n$free groups are CAT(0).
Inna Bumagin*, Carleton University
(107420223) 
10:30 a.m.
A class of metabelian automaton groups.
David McCune*, University of NebraskaLincoln
(107420264) 
11:00 a.m.
On nary adding machines and solvable groups.
Said N. Sidki*, Universidade de Brasilia
(10742085)

8:00 a.m.

Sunday October 16, 2011, 8:00 a.m.11:50 a.m.
Special Session on Association Schemes and Related Topics, IV
Room 108, Avery Hall
Organizers:
Sung Y. Song, Iowa State University sysong@iastate.edu
Paul Terwilliger, University of Wisconsin Madison

8:00 a.m.
The universal AskeyWilson algebra.
Paul M Terwilliger*, University of WisconsinMadison
(107405101) 
8:30 a.m.
Fusion rings with few degrees.
Harvey I. Blau*, Department of Mathematical Sciences, Northern Illinois University
(107420160) 
9:00 a.m.
$T$modules for $Q$polynomial distanceregular graphs with a Delsarte clique.
JaeHo Lee*, University of WisconsinMadison
(107405191) 
9:30 a.m.
Hemisystems in Unitary Spaces.
Luke Bayens*, Colorado State University
(107405334) 
10:00 a.m.
Extensions of the Theory of Association Schemes to Coherent Configurations.
Jason Williford*, University of Wyoming
(107405272) 
10:30 a.m.
Leonard triples associated with hypercubes and their antipodal quotients.
George Martin Fell Brown*, University of WisconsinMadison
(107405265) 
11:00 a.m.
On Relationships Between Association Schemes and Partial Difference Sets.
John B Polhill*, Bloomsburg University of Pennsylvania
(107405214) 
11:30 a.m.
Directed strongly regular graphs defined on the flags and antiflags of finite incidence structures.
Sung Y. Song*, Iowa State University
(107405315)

8:00 a.m.

Sunday October 16, 2011, 8:00 a.m.8:50 a.m.
Special Session on Asymptotic Behavior and Regularity for Nonlinear Evolution Equations, IV
Room 204, Burnett Hall
Organizers:
Petronela Radu, University of NebraskaLincoln pradu@math.unl.edu
Lorena Bociu, University of NebraskaLincoln

8:00 a.m.
Partial regularity for subquadratic parabolic systems with continuous coefficients.
Mikil Foss, University of NebraskaLincoln
Joe Geisbauer*, University of NebraskaLincoln
(107435294) 
8:30 a.m.
Existence and blow up for nonlinear wave equations.
Petronela Radu*, University of Nebraska Lincoln
(107435132)

8:00 a.m.

Sunday October 16, 2011, 8:00 a.m.10:20 a.m.
Special Session on Commutative Algebra, IV
Room 107, Burnett Hall
Organizers:
Christina EubanksTurner, University of Louisiana at Lafayette ceturner@louisiana.edu
Aihua Li, Montclair State University

8:00 a.m.
Wild Hypersurfaces.
Andrew Crabbe, Philadelphia PA
Graham J. Leuschke*, Syracuse University
(107413240) 
8:30 a.m.
Annihilators of Local Cohomology Modules.
Laura R. Lynch*, College of Coastal Georgia
(107413313) 
9:00 a.m.
An Algorithm for Computing Elasticities of Block Monoids.
Karl Kattchee*, University of WisconsinLa Crosse
Trever Hallock, University of WisconsinLa Crosse
(107413211) 
9:30 a.m.
On Augmented Graded Rings.
Mashhoor A. Refai*, Professor/vice president for academic affairs,princess sumaya university for technology,AmmanJordan
(10741333) 
10:00 a.m.
Strong and weak finitely valuative domains.
PaulJean Cahen*, AixMarseille Université
David E Dobbs, University of Tennessee, Knoxville
Thomas G Lucas, University of North Carolina Charlotte
(107413212)

8:00 a.m.

Sunday October 16, 2011, 8:00 a.m.11:20 a.m.
Special Session on Dynamic Systems on Time Scales with Applications, IV
Room 118, Burnett Hall
Organizers:
Lynn Erbe, University of NebraskaLincoln lerbe@math.unl.edu
Allan Peterson, University of NebraskaLincoln

8:00 a.m.
Multiple Fixed Point Theorems Utilizing Operators and Functionals of LeggettWilliams Type.
Rich Avery*, Dakota State University
(107447280) 
8:30 a.m.
HyersUlam stability of secondorder linear dynamic equations on time scales.
Douglas R Anderson*, Concordia College Moorhead
(10743425) 
9:00 a.m.
Necessary and sufficient conditions for uniform stability in volterra systems of integrodynamic equations on time scale.
Youssef Naim Raffoul*, University of Dayton
(10743765) 
9:30 a.m.
Oscillation results for second order nonlinear dynamic equaations on time scales.
Lynn Erbe*, University of Nebraska, Lincoln, Nebraska
Allan Peterson, University of Nebraska, Lincoln, Nebraska
Baoguo Jia, Zhongshan University
(107439249) 
10:00 a.m.
Green's Functions for Discrete and Continuous Fractional BVPs.
Christopher S. Goodrich*, University of NebraskaLincoln
(107434104) 
10:30 a.m.
Nabla Laplace Transforms and Fractional Calculus.
Kevin A Ahrendt*, University of NebraskaLincoln
Mike Holm, University of NebraskaLincoln
Lucas Castle, Lamar University
Kathryn Yochman, RoseHulman Institute of Technology
(107434243) 
11:00 a.m.
On the number of generalized zeros of solutions of a second order dynamic equation on a time scale.
Lynn Erbe, University of NebraskaLincoln
Gro Hovhannisyan, Kent StateStark
Allan Peterson*, University of NebraskaLincoln
(107434250)

8:00 a.m.

Sunday October 16, 2011, 8:00 a.m.10:45 a.m.
Special Session on Dynamical Systems and Operator Algebras, IV
Room 119, Burnett Hall
Organizers:
Lewis Bowen, Texas A&M University lpbowen@math.tamu.edu
David Kerr, Texas A&M University

8:00 a.m.
Bundles carrying invariant structures for dynamical systems and their operator algebras.
Kamran Reihani*, Department of Mathematics, University of Kansas
(107437150) 
8:30 a.m.
Hyperbolic groupoids and their $C^*$algebras.
Volodymyr Nekrashevych*, Texas A&M University, College Station, TX
(107437172) 
9:30 a.m.
Extensions of Hilbert Modules over Operator Tensor Algebras.
Andrew K. Greene*, University of Iowa
(107446325) 
10:00 a.m.
Ultraproducts of measure preserving actions and graph combinatorics.
Robin D. TuckerDrob*, Caltech
(107437148)

8:00 a.m.

Sunday October 16, 2011, 8:00 a.m.11:20 a.m.
Special Session on Extremal and Probabilistic Combinatorics, IV
Room 118, Avery Hall
Organizers:
Stephen Hartke, University of NebraskaLincoln hartke@math.unl.edu
Jamie Radcliffe, University of NebraskaLincoln

8:00 a.m.
Spanning trees of shifted simplicial complexes.
Caroline J Klivans, University of Chicago
Art M Duval, University of Texas, El Paso
Jeremy L Martin*, University of Kansas
(107405217) 
8:30 a.m.
Combinatorial Proofs of Some Chromatic Polynomial Constraints.
Rebecca I. Swanson*, Nebraska Wesleyan University
(107405277) 
9:00 a.m.
On the Chromatic Thresholds of Hypergraphs.
J Balogh, University of Illinois at UrbanaChampaign
J Butterfield*, University of Illinois at UrbanaChampaign
P Hu, University of Illinois at UrbanaChampaign
J Lenz, University of Illinois at Chicago
D Mubayi, University of Illinois at Chicago
(107405255) 
10:00 a.m.
Counting graph homomorphisms.
David Galvin*, University of Notre Dame
(10740562) 
10:30 a.m.
Independent sets in graphs with given minimum degree.
Jonathan Cutler*, Montclair State University
James Alexander, Montclair State University
Tim Mink, Montclair State University
(107405183) 
11:00 a.m.
Spectra of Hypergraphs.
Joshua N Cooper*, University of South Carolina
Aaron Dutle, University of South Carolina
(107405287)

8:00 a.m.

Sunday October 16, 2011, 8:00 a.m.10:50 a.m.
Special Session on Matrices and Graphs, IV
Room 112, Avery Hall
Organizers:
InJae Kim, Minnesota State University injae.kim@mnsu.edu
Adam Berliner, St. Olaf College
Leslie Hogben, Iowa State University
Bryan Shader, University of Wyoming

8:00 a.m.
The principal rank characteristic sequence of a real symmetric matrix.
Richard Brualdi, University of WisconsinMadison
Louis Deaett*, Quinnipiac University
Dale Olesky, University of Victoria
Pauline van den Driessche, University of Victoria
(107415326) 
8:30 a.m.
Patterns of Alternating Sign Matrices.
Richard A Brualdi, University of Wisconsin
Kathleen P Kiernan, University of Wisconsin
Seth A Meyer*, University of Wisconsin
Michael W Schroeder, Marshall University
(107415297) 
9:00 a.m.
Cyclic Matching Sequencibility of Graphs.
Michael W Schroeder*, Marshall University
Richard A Brualdi, University of Wisconsin
Kathleen P Kiernan, University of Wisconsin
Seth A Meyer, University of Wisconsin
(107405312) 
9:30 a.m.
Acyclic matrices with few distinct and few multiple eigenvalues.
Reshmi Nair*, University of Wyoming
Bryan Shader, University of Wyoming
(107405137) 
10:00 a.m.
Eventually reducible matrices.
Ulrica Wilson*, Morehouse College
Leslie Hogben, Iowa State University
(107415102) 
10:30 a.m.
The NilpotentCentralizer method.
Colin M Garnett*, The University of Wyoming
(10741548)

8:00 a.m.

Sunday October 16, 2011, 8:00 a.m.11:45 a.m.
Special Session on Quantum Groups and Representation Theory, IV
Room 111, Avery Hall
Organizers:
Jonathan Kujawa, University of Oklahoma kujawa@ou.edu
Natasha Rozhkovskaya, Kansas State University

8:00 a.m.
Calculating finite group cohomology with Kostant partition functions.
Cornelius Pillen*, Department of Mathematics and Statistics, University of South Alabama
(107420226) 
9:00 a.m.
Universal weight functions of quantum affine algebras.
Alexander Shapiro*, UC Berkeley
(107481210) 
9:30 a.m.
Whittaker categories for Lie superalgebras.
Irfan Bagci, University of CaliforniaRiverside
Konstantina Christodoulopoulou, University of Connecticut
Emilie Wiesner*, Ithaca College
(107417309) 
10:00 a.m.
Finite $W$superalgebras for queer Lie superalgebras and higher Sergeev duality.
Lei Zhao*, University of Oklahoma
(10741639) 
10:30 a.m.
The FRTConstruction via Quantum Affine Algebras and Smash Products.
Garrett Johnson*, North Carolina State University
Chris Nowlin, University of California, Santa Barbara
(107417246) 
11:00 a.m.
Some filtration results for Weyl modules.
Brian J. Parshall*, University of Virginia
(107420206)

8:00 a.m.

Sunday October 16, 2011, 8:00 a.m.11:45 a.m.
Special Session on Recent Directions in Number Theory, III
Room 106, Avery Hall
Organizers:
Alina Cojocaru, University of Illinois at Chicago
Michael Zieve, University of Michigan zieve@umich.edu

8:00 a.m.
Nonabelian CohenLenstra Heuristics.
Nigel Boston*, University of Wisconsin  Madison
(10741174) 
9:00 a.m.
Asymptotically good families of codes, curves, graphs, number fields, and 3manifolds.
Farshid Hajir*, University of Massachusetts, Amherst
(107411187) 
10:00 a.m.
Integral Division Points on Curves.
David Grant*, Department of Mathematics, University of Colorado at Boulder
SuIon Ih, Department of Mathematics, University of Colorado at Boulder
(107411205) 
11:00 a.m.
A conjecture of LangTrotter type for abelian surfaces.
Jeff Achter*, Colorado Stae University
(107411188)

8:00 a.m.

Sunday October 16, 2011, 8:30 a.m.10:50 a.m.
Special Session on Coding Theory, IV
Room 110, Avery Hall
Organizers:
Christine Kelley, University of NebraskaLincoln ckelley2@math.unl.edu
Judy Walker, University of NebraskaLincoln

8:30 a.m.
On codes from finite projective plane.
Adonus L. Madison, Lane College
Junhua Wu*, Lane College
(107400336) 
9:00 a.m.
ePerfect Codes.
Francis N. Castro, Department of Mathematics, University of Puerto Rico, Rio Piedras Campus
Heeralal Janwa*, Department of Mathematics, University of Puerto Rico, Rio Piedras Campus
Gary L. Mullen, Department of Mathematics, The Pennsylvania State University,
Ivelisse M. Rubio, Department of Computer Science, University of Puerto Rico, Rio Piedras Campus
(107494328) 
9:30 a.m.
Optimal Distance Profiles of Binary SelfDual Type II Codes.
Finley J. Freibert*, University of Louisville
JonLark Kim, University of Louisville
(107494112) 
10:00 a.m.
$\mathbb{F}_{p}$Codes, theta series, and the Hamming weight MacWilliams identity.
David Keyes*, University of Colorado, Boulder
(10741130) 
10:30 a.m.
A matrix approach to Group Convolutional Codes.
Sergio R. LópezPermouth, Ohio University
Steve Szabo*, Eastern Kentucky University
(107416279)

8:30 a.m.

Sunday October 16, 2011, 8:30 a.m.10:50 a.m.
Special Session on Invariants in Knot Theory and Lowdimensional Topology, IV
Room 109, Avery Hall
Organizers:
Mark Brittenham, University of NebraskaLincoln mbrittenham2@math.unl.edu
Robert Todd, University of NebraskaOmaha rtodd@unomaha.edu

8:30 a.m.
On the AJ Conjecture.
Thang LE*, Georgia Institute of Technology
Anh TRAN, Georgia Institute of Technology
(10745769) 
9:00 a.m.
Generalized Alexander Polynomials for Virtual Knots.
Alissa S Crans*, Loyola Marymount University
Allison Henrich, Seattle University
Sam Nelson, Claremont McKenna College
(107457323) 
9:30 a.m.
Twisted Virtual Biracks.
Sam Nelson*, Claremont McKenna College
(107457121) 
10:00 a.m.
Smoothed Parity Invariants.
Heather A Dye*, McKendree University
(10745792) 
10:30 a.m.
Projective representations of the mapping class Groups of surfaces coming from extended TQFT.
Charles D Frohman*, The University of Iowa
Michael C Fitzpatrick, The University of Iowa
Joann KaniaBartoszynska, National Science Foundation
(10745768)

8:30 a.m.

Sunday October 16, 2011, 9:00 a.m.10:50 a.m.
Special Session on Discrete Methods and Models in Biomathematics, IV
Room 121, Burnett Hall
Organizers:
Dora Matache, University of NebraskaOmaha
Jim Rogers, University of NebraskaOmaha
Alan VelizCuba, University of NebraskaLincoln avelizcuba2@unl.edu

9:00 a.m.
DiscreteContinuous Reverse Engineering.
Brandilyn Stigler*, Southern Methodist University
(107492305) 
9:30 a.m.
A CTLinclusive Mathematical Model for HIV Treatment with Timevarying Antiretroviral Therapy.
Nicoleta E Tarfulea*, Department of Mathematics, Purdue University, Calumet
(107492253) 
10:00 a.m.
MeanField Boolean Model of a Signal Transduction Network.
Naomi Kochi*, Department of Genetics, Cell Biology and Anatomy at University of Nebraska Medical Center
Mihaela Theodora Matache, Department of Mathematics at University of Nebraska at Omaha
(107437169) 
10:30 a.m.
Luis Rocha (Indiana University Bloomington) Discussion

9:00 a.m.

Sunday October 16, 2011, 9:00 a.m.11:50 a.m.
Special Session on Local Commutative Algebra, IV
Room 115, Burnett Hall
Organizers:
H. Ananthnarayan, University of NebraskaLincoln ahariharan2@math.unl.edu
Inês B. Henriques, University of California Riverside
Hamid Rahmati, Syracuse University

9:00 a.m.
A depth formula for Tate Torindependent modules over Gorenstein rings.
Lars Winther Christensen*, Texas Tech University
David A Jorgensen, University of TexasArlington
(107413303) 
9:30 a.m.
A criterion for the vanishing of homology.
Olgur Celikbas*, University of MissouriColumbia
(107413106) 
10:00 a.m.
Quasidualing Modules and the Auslander and Bass Classes.
Bethany Kubik*, United States Military Academy
(107413231) 
10:30 a.m.
The Generalized AuslanderReiten Conjecture and Derived Equivalences.
Kosmas Diveris*, Syracuse University
Marju Purin, Manhattan College
(107413317) 
11:00 a.m.
On the linearity defect of the residue field.
Liana M Sega*, University of Missouri, Kansas City
(107413288) 
11:30 a.m.
Dimensions of derived categories and singularity categories.
Ryo Takahashi*, Shinshu University/University of NebraskaLincoln
(10741350)

9:00 a.m.

Sunday October 16, 2011, 9:00 a.m.11:50 a.m.
Special Session on Recent Progress in Operator Algebras, IV
Room 120, Burnett Hall
Organizers:
Allan P. Donsig, University of NebraskaLincoln adonsig1@unl.edu
David R. Pitts, University of NebraskaLincoln

9:00 a.m.
A New Proof of Mercer's Theorem.
Vrej A Zarikian*, United States Naval Academy
(107447213) 
9:30 a.m.
Boundaries for operator systems.
Craig Kleski*, University of Virginia
(107447331) 
10:00 a.m.
C*algebraic characterization of bounded orbit injection equivalence for minimal free Cantor systems.
Frederic Latremoliere*, University of Denver
(107446204) 
10:30 a.m.
Operators Cauchy Dual to 2hyperexpansive Operators: The Multivariable Case.
Raul E Curto*, The University of Iowa
(107447179) 
11:00 a.m.
Contributions to the theory of $C^{*}$correspondences.
Elias Katsoulis*, East Carolina University & University of Athens
(107447307) 
11:30 a.m.
The Maximal W$^*$dilation and Morita Equivalence.
Upasana Kashyap*, The Citadel
(107446203)

9:00 a.m.

Sunday October 16, 2011, 9:00 a.m.11:40 a.m.
Session for Contributed Papers
Room 19, Avery Hall

9:00 a.m.
FrobeniusSchur indicators of quantum groups and symmetric tensor categories.
Miodrag Cristian Iovanov*, University of Southern California and University of Bucharest
Susan Montgomery, University of Southern California
(10742022) 
9:15 a.m.
Hereditary category algebras of finite EI categories.
Liping Li*, School of Mathematics, University of Minnesota
(10741626) 
9:30 a.m.
Hyperbolic cluster algebras.
Ibrahim Abdou Saleh*, Kansas State University, Manhattan Ks
(107405138) 
9:45 a.m.
On the range of possible integrities of graphs G(n,k).
Mustafa Atici*, Western Kentcuky University
Claus Ernst, Western Kentucky University
(10740567) 
10:00 a.m.
On congruence relations of graphs.
Evgenia Karmanova*, Saratov State University named after N.G. Chernyshevsky, Russian Federation
(10740014) 
10:15 a.m.
Attractors of dynamic systems associated with paths and cycles.
Anastasiya Vlasova*, Saratov State University named after N.G. Chernyshevsky, Russian Federation
(10740515) 
10:30 a.m.
On certain quadratic irrational cosines and transcendence of the angle over $\pi$.
Iraj Kalantari, Western Illinois University
Mojtaba Moniri*, Western Illinois University
(10741124) 
10:45 a.m.
New type of multiplicative relations of Gauss sums.
H Kim*, Southern University at New Orleans
(107411289) 
11:00 a.m.
Dynamics of continuous and discrete models in systems biology.
Alan VelizCuba*, University of NebraskaLincoln
Joseph Arthur, North Carolina State University
Laura Hochstetler, Asbury University
Victoria Klomps, Northwestern College
Erikka Korpi, University of WisconsinRiver Falls
(10749240) 
11:15 a.m.
Binary Normal Network Space Is Connected.
Devin R. Bickner*, Iowa State University
(107492201) 
11:30 a.m.
On JordanGrothendieck type theorem for dual characterization of real locally C*algebras.
Alexander A. Katz, St. John's University, NY, USA
Oleg Friedman*, UNISA, RSA and Touro College/LCM, Kew Gardens Hills, NY, USA
(107446126)

9:00 a.m.
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