AMS Sectional Meeting Program by Day
Current as of Saturday, October 29, 2005 01:24:04
2005 Fall Central Section Meeting
Lincoln, NE, October 2123, 2005
Meeting #1011
Associate secretaries: Susan J Friedlander, AMS susan@math.northwestern.edu
Saturday October 22, 2005

Saturday October 22, 2005, 7:30 a.m.4:00 p.m.
Meeting Registration
Room 13B, Avery Hall 
Saturday October 22, 2005, 7:30 a.m.4:00 p.m.
Exhibit and Book Sale
Room 13B, Avery Hall 
Saturday October 22, 2005, 8:00 a.m.11:30 a.m.
Special Session on Combinatorial Matrix Theory, II
Room 19, Avery Hall
Organizers:
Leslie Hogben, Iowa State University lhogben@iastate.edu
Bryan L. Shader, University of Wyoming bshader@uwyo.edu

8:00 a.m.
The Minimal Rank Problem and Forbidden Subgraphs.
Wayne Barrett*, Department of Mathematics, Brigham Young University
Jason Grout, Brigham Young University
Don March, University of Florida
Hein van der Holst, Eindhoven University of Technology
Raphael Loewy, TechnionIsrael Institute of Technology
(101115202) 
8:30 a.m.
The Minimal Rank Problem Over Finite Fields and Projective Geometries.
Jason Grout*, Brigham Young University
Wayne Barrett, Brigham Young University
Don March, University of Florida
(101115203) 
9:00 a.m.
Minimum Rank Problem and zero patterns.
Francesco Barioli*, University of Tennessee Chattanooga
(101115296) 
9:30 a.m.
The Minimum Positive Semidefinite Rank of a Graph.
Sivaram K. Narayan*, Central Michigan University
(101115133) 
10:00 a.m.
Minimum Rank and Maximum Eigenvalue Multiplicity of Symmetric Tree Sign Patterns.
Luz M. DeAlba*, Drake University
Timothy L. Hardy, Chadron State College
Irvin R. Hentzel, Iowa State University
Leslie Hogben, Iowa State University
Amy Wagsness, Iowa State University
(101115117) 
10:30 a.m.
Sign patterns that almost require a unique rank.
Zhongshan Li*, Georgia State University
Marina Arav, Georgia State University
Yubin Gao, North University of China
Frank Hall, Georgia State University
Selcuk Koyuncu, Georgia State University
(101115175) 
11:00 a.m.
On the Exponents of Oscillatory Matrices.
Shaun M Fallat*, University of Regina
(101115103)

8:00 a.m.

Saturday October 22, 2005, 8:00 a.m.11:20 a.m.
Special Session on Nonlinear Analysis and Control of Partial Differential Equations, II
Room 120, Burnett Hall
Organizers:
George Avalos, University of NebraskaLincoln gavalos@math.unl.edu
Petronela Radu, University of NebraskaLincoln pradu@math.unl.edu
Mohammad A. Rammaha, University of NebraskaLincoln rammaha@math.unl.edu
Richard L. Rebarber, University of NebraskaLincoln rrebarbe@math.unl.edu

8:00 a.m.
Derivation and Interpretation of Kinetic Boundary Conditions for the Heat and Wave Equations.
Gisele Ruiz Goldstein*, University of Memphis
(101135371) 
8:30 a.m.
On the almost periodic solutions to semilinear differential equations in Banach spaces.
Lan Thanh Nguyen*, Western Kentucky University
(101134225) 
9:00 a.m.
The asymptotic behavior of energy for wave equations with nonlinear dissipative terms in $R^n$.
Grozdena Todorova, University of Tennessee  Knoxville
Borislav Yordanov*, University of Tennessee  Knoxville
(101135115) 
9:30 a.m.
Frequencydomain stability of wellposed systems.
Yuri Latushkin*, University of MissouriColumbia
(10119360) 
10:00 a.m.
Instability for the KleinGordonZakharov system.
Grozdena Todorova*, University of Tennessee
(101135365) 
10:30 a.m.
On the Dirichlet problem for higher order elliptic operators in two dimensions.
Irina Mitrea*, University of Virginia
(101135186) 
11:00 a.m.
Modeling Hybrid Parameter Multiple Body Systems with Application to Biomechanics.
Lawrence Schovanec*, Department of Matheamtics & Statistics, Texas Tech University
Alan Barhorst, Department of Mechanical Engineering, Texas Tech University
(101174266)

8:00 a.m.

Saturday October 22, 2005, 8:00 a.m.11:20 a.m.
Special Session on Calculus of Variations, II
Room 203, Burnett Hall
Organizers:
Mikil Foss, University of NebraskaLincoln mfoss@math.unl.edu
Giovanni Leoni, Carnegie Mellon University giovanni@andrew.cmu.edu

8:00 a.m.
$A$quasiconvexity.
Pedro M Santos*, Instituto Superior Técnico
(101149270) 
8:30 a.m.
On GCompactness of Beltrami operators.
Tadeusz Iwaniec*, Syracuse University
(101135348) 
9:00 a.m.
Inversion of deformations.
Jan Mal\'y*, Charles University, Prague, Czech Republic
Stanislav Hencl, Charles University, Prague, Czech Republic
Pekka Koskela, University of Jyv\"asky'\"a, Finland
(101149240) 
9:30 a.m.
The Newton's problem of minimal resistence.
Marino Belloni*, Dipartimento di Matematica, Universita' di Parma, Italy
(101149105) 
10:00 a.m.
The Gauss Green theorem for a bounded vector field whose divergence is a measure.
William P Ziemer*, Indiana Univesity (Bloomington)
(101128116) 
10:30 a.m.
Implicit partial differential equations.
P. Marcellini*, Università di Firenze
(101149379) 
11:00 a.m.
Action Minimization and Sharp Interface Limits.
Maria G. Reznikoff*, Princeton University
(10114938)

8:00 a.m.

Saturday October 22, 2005, 8:00 a.m.11:20 a.m.
Special Session on Universal Algebra and Order, II
Room 108, Avery Hall
Organizers:
Jonathan D. Farley, Harvard University lattice@math.harvard.edu
John William Snow, Sam Houston State University jsnow@shsu.edu
Japheth L. M. Wood, Chatham College jwood@chatham.edu

8:00 a.m.
Greedy Algebras.
Theodore A. Rice*, Iowa State University
(101108183) 
8:30 a.m.
The poset structure of a sum of Priestley spaces.
R. N. Ball*, University of Denver, Denver, Colorado
A. Pultr, Charles University, Prague, Czech Republic
J. Sichler, University of Manitoba, Winnepeg, Canada
(101106323) 
9:00 a.m.
Approximate satisfaction of identities (continued).
Walter Taylor*, University of Colorado, Boulder, Colorado, USA
(101108316) 
9:30 a.m.
Lattices of Compatible Topologies for Topological Models.
Matt Insall*, Department of Mathematics and Statistics, University of Missouri  Rolla
(10110666) 
10:00 a.m.
Countable Almost Rigid Heyting Algebras.
M. E. Adams*, State University of New York at New Paltz
Ale\v{s} Pultr, Charles University
(10110635) 
10:30 a.m.
Finite Mal'tsev Algebras.
Keith Kearnes, Department of Mathematics, University of Colorado at Boulder
Agnes Szendrei*, Department of Mathematics, University of Colorado at Boulder
(101108278) 
11:00 a.m.
The existence of a nearunanimity term in a finite algebra is decidable.
Mikl\'os Mar\'oti*, Bolyai Institute, University of Szeged, Hungary
(101108134)

8:00 a.m.

Saturday October 22, 2005, 8:00 a.m.11:20 a.m.
Special Session on Association Schemes and Related Topics, I
Room 119, Avery Hall
Organizers:
Sung Yell Song, Iowa State university sysong@iastate.edu
Paul M. Terwilliger, University of Wisconsin terwilli@math.wisc.edu

8:00 a.m.
Distanceregular graphs and the quantum affine algebra $U_q(\widehat{sl}_2)$.
Paul M Terwilliger*, Department of Mathematics, University of Wisconsin
(101105140) 
8:30 a.m.
The subconstituent algebra of a bipartite distanceregular graph; thin modules with endpoint two.
Mark S MacLean*, Seattle University
Paul M Terwilliger, University of Wisconsin
(101105138) 
9:00 a.m.
On bipartite $Q$polynomial distanceregular graphs.
Stefko Miklavic*, Department of Mathematics and Computer Science, Faculty of Education, University of Primorska
(101105155) 
9:30 a.m.
Pseudo Idempotents and Bipartite QPolynomial DistanceRegular Graphs.
Michael S. Lang*, Bradley University
(101105368) 
10:00 a.m.
Permutation representations, characters and set partitions.
Jonathan D.H. Smith*, Department of Mathematics, Iowa State University
(101105172) 
10:30 a.m.
Discussion 
11:00 a.m.
TypeII Matrices.
Ada Chan, York University
Chris Godsil*, University of Waterloo
(101105248)

8:00 a.m.

Saturday October 22, 2005, 8:00 a.m.11:20 a.m.
Special Session on Dynamic Equations on Time Scales, II
Room 110, Avery Hall
Organizers:
Lynn H. Erbe, University of NebraskaLincoln lerbe@math.unl.edu
Allan C. Peterson, University of NebraskaLincoln apeterso@math.unl.edu

8:00 a.m.
Asymptotic Equivalence Of Dynamic Systems.
Billur Kaymakcalan*, Georgia Southern University
Agacik Zafer, Middle East Technical University
(101134301) 
8:30 a.m.
Optimal interval lengths for nonlocal boundary value problems associated with third order Lipschitz equations.
Stephen Clark*, University of MissouriRolla
Johnny Henderson, Baylor University
(101134151) 
9:00 a.m.
Impulsive Functional Dynamic Equations on Time Scales.
Mouffak Benchohra, Universite de Sidi Bel Abbes
Johnny Henderson*, Baylor University
Sotiris K. Ntouyas, University of Ioannina
Abdelghani Ouahab, Universite de Sidi Bel Abbes
(10113936) 
9:30 a.m.
A Continue Discussion about Practical Higher Order Derivative Approximations on Time Scales.
Qin Sheng*, Baylor University
(10113455) 
10:00 a.m.
Positive Solutions for a Nonlinear Functional Dynamic Equation on a Time Scale.
Eric R Kaufmann, University of Arkansas at Little Rock
Youssef Naim Raffoul*, University of Dayton
(10113962) 
10:30 a.m.
Absolute Stability of Nonlinear Discrete Systems.
Rigoberto Medina*, Departamento de Ciencias Exactas, Universidad de Los Lagos. Osorno, Chile
Michael Gil', Department of Mathematics, Ben Gurion University of the Negev, Israel
(10113957) 
11:00 a.m.
Asymptotic Stability for Second Order Dynamic Equations on Time Scale.
Gro Hovhannisyan*, Kent State University, Stark Campus
(10113413)

8:00 a.m.

Saturday October 22, 2005, 8:00 a.m.11:20 a.m.
Special Session on Mathematical Ecology, II
Room 103, Burnett Hall
Organizers:
David Logan, University of NebraskaLincoln dlogan@math.unl.edu
William Robert Wolesensky, College of St. Mary wwolesensky@CSM.edu

8:00 a.m.
Geometric Singular Perturbation Analysis of a Model for Infectious Diseases.
Michael Y Li*, University of Alberta
Weishi Liu, University of Kansas
(101134396) 
8:30 a.m.
Marine Phage Ecology.
Joseph M Mahaffy*, San Diego State University
(101192347) 
9:00 a.m.
A Stoichiometric Discrete PredatorPrey Model: Chaos and Its Implications.
Meng Fan, School of Mathematics and Statistics, Northeast Normal University
Irakli Loladze, Department of Mathematics, University of NebraskaLincoln
Yang Kuang*, Department of Mathematics and Statistics, Arizona State University
James J Elser, School of Life Sciences, Arizona State University
(10119270) 
9:30 a.m.
Population dynamics in systems with unidirectional flow.
Roger M. Nisbet*, University of California, Santa Barbara.
(101192191) 
10:30 a.m.
Modeling the energymortality tradeoffs of invertebrate decorating behavior.
Sarah K Berke, Department of Biological Sciences, Univ. of S. Carolina
Matthew Miller*, Department of Mathematics, Univ. of S. Carolina
Sarah A Woodin, Department of Biological Sciences, Univ. of S. Carolina
(101192306) 
11:00 a.m.
Plant competition for sunlight.
Andrew L. Nevai*, The Ohio State University
Richard R. Vance, University of California, Los Angeles
(101192385)

8:00 a.m.

Saturday October 22, 2005, 8:30 a.m.11:20 a.m.
Special Session on Representation Theory of Noetherian Rings, I
Room 112, Avery Hall
Organizers:
Roger A. Wiegand, University of NebraskaLincoln rwiegand@math.unl.edu
Sylvia Margaret Wiegand, University of NebraskaLincoln swiegand@math.unl.edu

8:30 a.m.
Directsum decompositions over onedimensional reduced local rings.
Alberto Facchini, Università di Padova
Wolfgang Hassler, KarlFranzensUniversität Graz
Lee Klingler*, Florida Atlantic University
Roger Wiegand, University of Nebraska, Lincoln
(101113163) 
9:00 a.m.
Failure of KrullSchmidt for Twodimensional Local Domains.
Nicholas R Baeth*, Central Missouri State University
(10111333) 
9:30 a.m.
Decomposition of modules over onedimensional Noetherian rings.
Meral Arnavut*, SUNY Fredona, Department of Mathematical Sciences
Melissa Luckas, University of NebrskaLincoln
Sylvia Wiegand, University of NebraskaLincoln
(101113261) 
10:00 a.m.
Indecomposable modules of large multiplicity over local rings.
W. Hassler, KarlFranzensUniversität Graz
R. Karr*, Wilkes Honors College FAU
L. Klingler, Florida Atlantic University
R. Wiegand, University of Nebraska  Lincoln
(101113227) 
10:30 a.m.
Decomposition of modules over onedimensional Noetherian rings II.
Meral Arnavut, SUNY Fredonia
Melissa Luckas*, University of Nebraska Lincoln
Sylvia Wiegand, University of Nebraska Lincoln
(101113308) 
11:00 a.m.
Directsum cancellation for modules over real quadratic orders.
Wolfgang Hassler*, University of Graz, Austria
(10111390)

8:30 a.m.

Saturday October 22, 2005, 8:30 a.m.11:15 a.m.
Special Session on Commutative Algebra, I
Room 106, Avery Hall
Organizers:
Lars Winther Christensen, University of NebraskaLincoln winther@math.unl.edu
Srikanth B. Iyengar, University of NebraskaLincoln iyengar@math.unl.edu
Sean M. SatherWagstaff, California State University, Dominguez Hills swagstaff@math.unl.edu

8:30 a.m.
Tangent algebras.
Aron Simis, Universidade Federal de Pernambuco
Bernd Ulrich*, Purdue University
Wolmer V. Vasconcelos, Rutgers University
(101113176) 
9:30 a.m.
A Class of coherent regular rings.
Christel  Rotthaus*, Michigan State University
Liana M Sega, University of Missouri at Kansas City
(101113215) 
10:30 a.m.
Questions on Noetherian rings of mixed characteristic.
Paul C Roberts*, University of Utah
(101113228)

8:30 a.m.

Saturday October 22, 2005, 8:30 a.m.10:55 a.m.
Special Session on Mathematical Education of Teachers, III
Room 119, Burnett Hall
Organizers:
W. James Lewis, University of NebraskaLincoln jlewis@math.unl.edu
Cheryl Lynn Olsen, Shippensburg University of Pennsylvania clolse@ship.edu
Ira J. Papick, University of MissouriColumbia papicki@missouri.edu

8:30 a.m.
A Distance Education Course in Experimentation, Conjecture and Reasoning for MiddleSchool Teachers.
Steven R Dunbar*, University of NebraskaLincoln
Heidi Feller, University of NebraskaLincoln
(101197282) 
9:00 a.m.
Preparation and Support of Mathematics Teachers: the role of an A\&S Math Department.
Paul M Eakin*, University of Kentucky
(101197249) 
9:30 a.m.
Calculus for middle school teachers.
Dorina Mitrea*, University of Missouri
(101197226) 
10:00 a.m.
Elementary and Middle School Teachers as Mathematicians: Training K8 Mathematics Teacher Leaders.
Kenneth I. Gross*, University of Vermont and Lesley University
(101197188) 
10:30 a.m.
The Impact of KTEM on Preservice Elementary Teachers' Beliefs on Learning and Teaching Whole Number Operations.
Hortensia SotoJohnson*, University of Northern Colorado
Michele Iiams, University of North Dakota
Todd Oberg, Illinois College
Barbara Boschmans, Plymouth State University
April Hoffmeister, University of Memphis
(101197287)

8:30 a.m.

Saturday October 22, 2005, 8:30 a.m.11:20 a.m.
Special Session on KTheory and Algebraic Cycles, II
Room 109, Avery Hall
Organizers:
Christian Haesemeyer, University of Illinois at UrbanaChampaign chh@math.uiuc.edu
Gregory Grant Piepmeyer, University of NebraskaLincoln gpiepmey@math.unl.edu
Mark Edward Walker, University of NebraskaLincoln mwalker@math.unl.edu

8:30 a.m.
Karoubi's Construction for Motivic Cohomology Operations.
Zhaohu Nie*, Texas A&M University
(101114108) 
9:00 a.m.
Mixed Tate Motives.
Madhav V Nori*, The University of Chicago
(101119100) 
10:00 a.m.
A Lefschetz (1,1)theorem for proper seminormal complex varieties.
Andreas Rosenschon*, University at Buffalo, SUNY
(101114317) 
10:30 a.m.
Applications of homotopy theory to algebraic geometry.
Marc Levine*, Northeastern University
(101114237)

8:30 a.m.

Saturday October 22, 2005, 8:30 a.m.11:20 a.m.
Special Session on Analysis of Partial Differential and Integral Equations, II
Room 232, Burnett Hall
Organizers:
Congming Li, University of Colorado Congming.Li@colorado.edu

8:30 a.m.
Locating the peaks of leastenergy solutions to a quasilinear elliptic Neumann problem.
Yi Li, University of Iowa
ChunShan Zhao*, University of Iowa
(101135387) 
9:00 a.m.
The symmetry of the solutions to the intergral equations related with weighted HardyLittlewoodSobolev inequality.
Chao Jin*, Ph.D student, Dept. of Applied Math, University of Colorado at Boulder
Congming Li, Professor, Dept. of Applie math, university of colorado at boulder
(101145233) 
9:30 a.m.
The Asymptotics of Solutions to Some Integral Equations.
Jisun Lim*, University of Colorado at Boulder
Congming Li, University of Colorado at Boulder
Chao Jin, University of Colorado at Boulder
(10114577) 
10:00 a.m.
Global existence and a priori estimates of GiererMeinhardt system.
Huiqiang Jiang*, School of Mathematics, University of Minnesota
WeiMing Ni, School Of Mathematics, University of Minnesota
(10113586) 
10:30 a.m.
Layer potentials on spaces with vanishing mean oscillations.
Dorina Mitrea*, University of MissouriColumbia
(10113534) 
11:00 a.m.
Mathematical models for the propagation of electromagnetic waves in generally nonlinear magnetized and polarized media.
Frank Jochmann*, TUBerlin, Institut fur Mathematik
(10113550)

8:30 a.m.

Saturday October 22, 2005, 8:30 a.m.11:20 a.m.
Special Session on Undergraduate Research, II
Room 115, Avery Hall
Organizers:
Richard L. Rebarber, University of NebraskaLincoln rrebarbe@math.unl.edu
Gordon S. Woodward, University of NebraskaLincoln gwoodwar@math.unl.edu

8:30 a.m.
Theorems on Nonnegative Primitive Matrices.
Derek Boeckner*, University of NebraskaLincoln
(101115359) 
9:00 a.m.
Robustness and Transients Applied to Harvesting Peregrine Falcon Populations, Preliminary report.
Alyson Deines*, Kansas State University
Ellen Peterson*, Wittenberg University
Richard Ryan*, University of Rhode Island
(101192298) 
9:30 a.m.
Cheetah Conservation  A New Approach.
Amy Keighley*, Rensselaer Polytechnic Institute
Joan Lubben, University of NebraskaLincoln
(101192307) 
10:00 a.m.
The Evolution of Cooperation in Finite, Growing Populations.
Allison Bishop*, Princeton University
(101191328) 
10:30 a.m.
The HenstockKurzweil Delta Integral on Unbounded Time Scales.
Stephen Avsec*, Princeton University
Brittany Bannish, Mt. Holyoke College
Brian Johnson*, North Dakota State University
Scott Meckler, SUNY at Geneseo
(101139304) 
11:00 a.m.
Optimization algorithms in portfolio management with nonlinear constraints.
Bill Bade*, St. Mary's University of Minnesota
(101190325)

8:30 a.m.

Saturday October 22, 2005, 8:30 a.m.11:20 a.m.
Special Session on Algebraic Geometry, II
Room 111, Avery Hall
Organizers:
Brian Harbourne, University of NebraskaLincoln bharbour@math.unl.edu
Bangere P. Purnaprajna, University of Kansas purna@math.ku.edu

8:30 a.m.
Syzygies, multigraded regularity and toric varieties.
Milena Hering*, University of Michigan
Hal Schenck, Texas A&M University
Greg Smith, Queens University, Ontario
(10111407) 
9:00 a.m.
Birational Equivalence, Linear Systems, and Desingularization.
Yasuyuki Kachi*, Department of Mathematics, University of Kansas
(10111442) 
9:30 a.m.
The Geometry of the Weak Lefschetz Property.
Juan C. Migliore*, University of Notre Dame
(101114112) 
10:00 a.m.
The equations of curves on a quadric.
Roberta Di Gennaro, Universita degli Studi di Napoli "Federico II"
Uwe Nagel*, University of Kentucky
(101114279) 
10:30 a.m.
On threefolds without nonconstant regular functions.
Jing Zhang*, Department of Mathematics, University of Missouri, Columbia, MO 65211
(101114149) 
11:00 a.m.
Stable bundles on CalabiYau manifolds and DonaldsonThomas invariants.
Zhenbo Qin*, University of Missouri at Columbia
WeiPing Li, Hong Kong University of Science and Technology
(10111454)

8:30 a.m.

Saturday October 22, 2005, 8:30 a.m.11:20 a.m.
Special Session on Scattering and Spectral Problems in Geometry, II
Room 205, Burnett Hall
Organizers:
Peter A. Perry, University of Kentucky perry@ms.uky.edu
Alejandro Uribe, University of Michigan uribe@umich.edu

8:30 a.m.
Sharp upper bounds on the number of scattering poles.
Plamen Stefanov*, Purdue University
(10113594) 
9:00 a.m.
The resonance counting function for Schr\"odinger operators in odd dimensions.
T. Christiansen*, University of Missouri
P. D. Hislop, University of Kentucky
(10113567) 
9:30 a.m.
Semiclassical Scattering Amplitude at a Maximum Point of the Potential.
Ivana Alexandrova*, University of Toronto
JeanFrancois Bony, Universite Bordeaux
Thierry Ramond, Universite ParisSud
(101135194) 
10:00 a.m.
Inverse spectral results on even dimensional tori.
Carolyn S Gordon*, Dartmouth College
Pierre Guerini, Institut f\"ur Mathematik, Universit\"at Z\"urichIrchel\
Thomas Kappeler, Institut f\"ur Mathematik, Universit\"at Z\"urichIrchel\
David L Webb, Dartmouth College
(101158367) 
10:30 a.m.
Compactness of Isospectral Potentials.
Harold G Donnelly*, Purdue University
(10115820) 
11:00 a.m.
Maximal $L^{\infty}$bounds for modes and quasimodes of the Laplacian.
John A Toth*, McGill University
(101135101)

8:30 a.m.

Saturday October 22, 2005, 8:30 a.m.11:20 a.m.
Special Session on Recent Progress in Operator Algebras, II
Room 118, Burnett Hall
Organizers:
Allan P. Donsig, University of NebraskaLincoln adonsig@math.unl.edu
David R. Pitts, University of NebraskaLincoln dpitts@math.unl.edu

8:30 a.m.
Representations of Product Systems over Semigroups and Dilations of Commuting CP maps.
Baruch Solel*, Technion, Israel Institute of Technology
(10114651) 
9:00 a.m.
Nonouter conjugate actions on a free product factor.
Maria Grazia Viola*, Department of Mathematics, Queen's University
Kenneth Dykema, Department of Mathematics, Texas A&M University
(101146345) 
9:30 a.m.
Paving Small Matrices.
Gary Weiss, University of Cincinnati
Vrej Zarikian*, United States Naval Academy
(101147271) 
10:00 a.m.
$C^{*}$Algebras associated with MauldinWilliams Graphs.
Marius V Ionescu*, Deparmtent of Mathematics, Dartmouth College
(101147113) 
10:30 a.m.
Algebraic Solution of the Lifting Problem for Commuting Subnormals.
Raul E Curto*, The University of Iowa
(10114799) 
11:00 a.m.
Classifying the Stable Ideals of a Nest Algebra.
John Lindsay Orr*, University of Nebraska  Lincoln
(101147250)

8:30 a.m.

Saturday October 22, 2005, 8:30 a.m.11:20 a.m.
Special Session on Geometric Methods in Group Theory and Semigroup Theory, II
Room 107, Burnett Hall
Organizers:
Susan M. Hermiller, University of NebraskaLincoln smh@math.unl.edu
John C. Meakin, University of NebraskaLincoln jmeakin@math.unl.edu
Zoran Sunik, Texas A&M University sunik@math.tamu.edu

8:30 a.m.
Algebraic characterizations of oneway functions.
JeanCamille Birget*, Rutgers University, Camden Campus
(10112048) 
9:00 a.m.
Reidemeister number as a quasiisometry invariant for the solvable BaumslagSolitar groups.
Jennifer Taback*, Bowdoin College
Peter Wong, Bates College
(10112045) 
9:30 a.m.
Distortion of surface groups in freebycyclic groups.
Noel Brady*, University of Oklahoma
Josh Barnard, University of Oklahoma
(101120356) 
10:00 a.m.
Curvature properties of limit groups.
Emina Alibegovic*, University of Michigan
(101120326) 
10:30 a.m.
Biautomaticity and CAT(0) piecewise Euclidean 2complexes.
Rena Hull*, UC Santa Barbara
(101120170) 
11:00 a.m.
Groups acting on CAT(0) spaces of the form $X\times\mathbb R$.
Kim Ruane*, Tufts University
(101120330)

8:30 a.m.

Saturday October 22, 2005, 8:30 a.m.10:00 p.m.
Special Session on Randomness in Computation, III
Room 347, Avery Hall
Organizers:
John M. Hitchcock, University of Wyoming jhitchco@cs.uwyo.edu
Aduri Pavan, Iowa State University pavan@cs.iastate.edu
Vinodchandran Variyam, University of NebraskaLincoln vinod@cse.unl.edu

8:30 a.m.
Connections Between Kolmogorov and Computational Complexity.
Lance Fortnow*, University of Chicago
(10116898) 
9:00 a.m.
The listdecoding radius for ReedSolomon codes.
Eli BenSasson, Toyota Technological Institute at Chicago
Swastik Kopparty, MIT
Jaikumar Radhakrishnan*, Toyota Technological Institute at Chicago and Tata Institute, Mumbai
(101168255) 
9:30 a.m.
The Directed Planar Reachability Problem.
Eric Allender, Rutgers University
Samir Datta, Chennai Mathematical Institute
Sambuddha Roy*, Rutgers University
(101168239) 
10:00 a.m.
Break 
10:30 a.m.
Discussion 
11:00 a.m.
Hierarchies for Smoothed Probabilistic Classes.
Rahul Santhanam*, Simon Fraser University
(101168388)

8:30 a.m.

Saturday October 22, 2005, 8:30 a.m.11:20 a.m.
Special Session on Graph Theory, II
Room 102, Burnett Hall
Organizers:
Andrew J. Radcliffe, University of NebraskaLincoln jradclif@math.unl.edu
Zsuzsanna Szaniszlo, Valparaiso University zsuzsanna.szaniszlo@valpo.edu
Jonathan Cutler, University of NebraskaLincoln jcutler@math.unl.edu

8:30 a.m.
Discussion 
9:00 a.m.
Highly connected multicoloured subgraphs of multicoloured graphs.
Henry Liu, The University of Memphis
Robert Morris*, The University of Memphis
Noah Prince, The University of Memphis
(101105107) 
9:30 a.m.
On listcoloring outerplanar graphs.
M. O. Albertson, Smith College
J. P. Hutchinson*, Macalester College
R Ramamurthi, California State University San Marcos
(101105174) 
10:00 a.m.
Improved bounds for the two person guessing secrets game.
Boris Bukh, Princeton University
Anant P Godbole*, East Tennessee State University
Eden Hochbaum, Harvard University
(10110578) 
10:30 a.m.
On a conjecture of Berge and Simonovits about hypergraph products.
Dhruv Mubayi*, University of Illinois at Chicago
Vojtech Rodl, Emory University
(101105158) 
11:00 a.m.
Nearperfect pseudoharmonious matchings randomly labeled planar point sets.
Jozsef Balogh*, The University of Illinois at UrbanaChampaign
Boris Pittel, The Ohio State University
Gelasio Salazar, University of San Luis, Mexico
(10110581)

8:30 a.m.

Saturday October 22, 2005, 9:00 a.m.11:20 a.m.
Special Session on Geometry of Differential Equations, II
Room 204, Burnett Hall
Organizers:
Jeanne Nielsen Clelland, University of Colorado Jeanne.Clelland@Colorado.EDU
Irina A. Kogan, North Carolina State University iakogan@ncsu.edu
Zhijun Qiao, University of TexasPan American qiao@utpa.edu

9:00 a.m.
An Integrable Reduction in Coassociative Geometry.
Daniel Fox*, University of California, Irvine
(101153220) 
9:30 a.m.
Special Lagrangians in the Deformed and Resolved Conifolds.
Marianty Ionel*, The University of Toledo
(101153224) 
10:00 a.m.
Geodesics of SubRiemannian Engel Manifolds.
Christopher G Moseley*, US Miltary Academy, West Point, NY
(101153187) 
10:30 a.m.
Geometry of subFinsler Engel manifolds.
Jeanne N. Clelland*, University of Colorado, Boulder
Christopher G. Moseley, U.S. Military Academy
George R. Wilkens, University of Hawaii
(101153218) 
11:00 a.m.
An Inverse Problem from SubRiemannian Geometry.
Thomas A. Ivey*, College of Charleston
(10115373)

9:00 a.m.

Saturday October 22, 2005, 9:00 a.m.11:20 a.m.
Special Session on Mathematical and Engineering Aspects of Coding Theory, II
Room 121, Burnett Hall
Organizers:
Lance Perez, University of NebraskaLincoln lperez@unl.edu
Judy Walker, University of NebraskaLincoln jwalker@math.unl.edu

9:00 a.m.
Nested Interpolation for Reduced Complexity Soft Decoding of Reed Solomon Codes.
Ralf Koetter*, University of Illinois at Urbana Champaign
(101194382) 
9:30 a.m.
Multivariate Interpolation Decoding of ReedSolomon Codes And Decoding Beyond the GuruswamiSudan Radius.
Farzad Parvaresh*, University of California, San Diego
Alexander Vardy, University of California, San Diego
(101114205) 
10:00 a.m.
On linear programming bounds for codes.
Alexander Barg*, University of Maryland
(101194212) 
10:30 a.m.
An Explicit Construction of Universally Decodable Matrices.
Pascal O Vontobel*, Department of Electrical and Computer Engineering, University of WisconsinMadison
Ashwin Ganesan, Department of Electrical and Computer Engineering, University of WisconsinMadison
(101194135) 
11:00 a.m.
Sequences in chemistry and physics.
Jonathan I Hall*, Michigan State University
(101194303)

9:00 a.m.

Saturday October 22, 2005, 11:40 a.m.12:30 p.m.
Invited Address
Billiards in polygons: Connections of geometry and complex analysis to dynamical systems.
Room 115, Burnett Hall
Howard A. Masur*, University of Illinois at Chicago
(10113706) 
Saturday October 22, 2005, 2:00 p.m.2:50 p.m.
Invited Address
Some mathematical manifestations of the quantumclassical relationship.
Room 115, Burnett Hall
Alejandro Uribe*, University of MIchigan
(10110044) 
Saturday October 22, 2005, 3:00 p.m.4:55 p.m.
Special Session on Combinatorial Matrix Theory, III
Room 19, Avery Hall
Organizers:
Leslie Hogben, Iowa State University lhogben@iastate.edu
Bryan L. Shader, University of Wyoming bshader@uwyo.edu

3:00 p.m.
An Interlacing Result on Normalized Laplacians.
Guantao Chen, Georgia State University
George Davis, Georgia State University
Frank Hall*, Georgia State University
Zhongshan Li, Georgia State University
Kinnari Patel, Emory University
Michael Stewart, Georgia State University
(10111549) 
3:30 p.m.
Some remarks on unispectral graphs.
Wasin So*, San Jose State University
(10111519) 
4:00 p.m.
Corona of two Graphs.
Sasmita Barik, Indian Institute of Technology Guwahati
Sukanta Pati, Indian Institute of Technology Guwahati
Bhaba Kumar Sarma*, Indian Institute of Technology Guwahati
(10110552) 
4:30 p.m.
Perfect matchings, eigenvalues and expansion.
Sebastian M Cioab\u{a}*, Queen's University at Kingston
(101105156)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on Geometry of Differential Equations, III
Room 204, Burnett Hall
Organizers:
Jeanne Nielsen Clelland, University of Colorado Jeanne.Clelland@Colorado.EDU
Irina A. Kogan, North Carolina State University iakogan@ncsu.edu
Zhijun Qiao, University of TexasPan American qiao@utpa.edu

3:00 p.m.
Singular Normal Forms for Symplectic MongeAmpere PDE in the Plane.
Jeanne Clelland, University of Colorado at Boulder
Marek Kossowski, University of South Carolina
George R Wilkens*, University of Hawaii at Manoa
(101158295) 
3:30 p.m.
Rigidity of submanifolds in homogeneous spaces.
Sung Ho Wang*, Kias
(10115384) 
4:00 p.m.
On B\"acklund Transformations Using Two PseudoPotentials.
Hongyou Wu*, Northern Illinois University
(101135171) 
4:30 p.m.
Hamiltonian Structures of Constrained Flows.
WenXiu Ma*, University of South Florida
(101137201)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on Representation Theory of Noetherian Rings, II
Room 112, Avery Hall
Organizers:
Roger A. Wiegand, University of NebraskaLincoln rwiegand@math.unl.edu
Sylvia Margaret Wiegand, University of NebraskaLincoln swiegand@math.unl.edu

3:00 p.m.
Generalizations of Koszul algebras.
Edward L Green*, Virginia Tech
(101116236) 
3:30 p.m.
Approximately Simultaneously Diagonalizable Matrices.
C I Vinsonhaler*, University of Connecticut
(101116206) 
4:00 p.m.
Classifying finite dimensional representations with squarefree tops.
Birge HuisgenZimmermann*, University of California at Santa Barbara
(101116216) 
4:30 p.m.
Multiisomorphism for quotient divisible groups; connections with representations of rings.
Bill Wickless*, University of Connecticut
(10112053)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on Nonlinear Analysis and Control of Partial Differential Equations, III
Room 120, Burnett Hall
Organizers:
George Avalos, University of NebraskaLincoln gavalos@math.unl.edu
Petronela Radu, University of NebraskaLincoln pradu@math.unl.edu
Mohammad A. Rammaha, University of NebraskaLincoln rammaha@math.unl.edu
Richard L. Rebarber, University of NebraskaLincoln rrebarbe@math.unl.edu

3:00 p.m.
Linear and Nonlinear Controllability of Viscoelastic Shear Flows.
Michael Renardy*, Virginia Tech
(10117658) 
3:30 p.m.
A Posteriori Error Analysis For Mathematical Idealizations And Numerical Approximations.
Weimin Han*, Department of Mathematics, University of Iowa
(101165119) 
4:00 p.m.
Models for Material Damage.
Meir Shillor*, Oakland University
(101174197) 
4:30 p.m.
Semigroup theory for Yeow`s equations of free liquid films.
Thomas Hagen*, The University of Memphis
(10113561)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:45 p.m.
Special Session on Commutative Algebra, II
Room 106, Avery Hall
Organizers:
Lars Winther Christensen, University of NebraskaLincoln winther@math.unl.edu
Srikanth B. Iyengar, University of NebraskaLincoln iyengar@math.unl.edu
Sean M. SatherWagstaff, California State University, Dominguez Hills swagstaff@math.unl.edu

3:00 p.m.
Encoding injective resolutions.
Ezra Miller*, University of Minnesota, Twin Cities
(101113281) 
4:00 p.m.
Duality and stability.
Alex Martsinkovsky*, Northeastern University
Idun Reiten, NTNU (Trondheim)
(101116209)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:55 p.m.
Special Session on Mathematical Education of Teachers, III
Room 119, Burnett Hall
Organizers:
W. James Lewis, University of NebraskaLincoln jlewis@math.unl.edu
Cheryl Lynn Olsen, Shippensburg University of Pennsylvania clolse@ship.edu
Ira J. Papick, University of MissouriColumbia papicki@missouri.edu

3:00 p.m.
A Course in Number Theory and Cryptology for Middle Level Teachers.
Kristin Pfabe*, Department of Mathematics, Nebraska Wesleyan University, Lincoln NE
Michelle Reeb Homp, Center for Science, Mathematics and Computer Education, University of Nebraska  Lincoln
(101197334) 
3:30 p.m.
Geometry for Middle School Mathematics Teachers.
John K. Beem*, University of MissouriColumbia
(101197199) 
4:00 p.m.
In Polya's words: "The student shall have a reasonable share of the work".
Kristin L. Umland*, University of New Mexico
(101197294) 
4:30 p.m.
The Mathematical Education of Teachers: The Small College Plan.
Robert E Glasgow*, Southwest Baptist University
(101197342)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on KTheory and Algebraic Cycles, III
Room 109, Avery Hall
Organizers:
Christian Haesemeyer, University of Illinois at UrbanaChampaign chh@math.uiuc.edu
Gregory Grant Piepmeyer, University of NebraskaLincoln gpiepmey@math.unl.edu
Mark Edward Walker, University of NebraskaLincoln mwalker@math.unl.edu

3:00 p.m.
Triangular Witt groups of punctured vector bundles.
Seva Joukhovitski*, University of California, Los Angeles
(101119181) 
3:30 p.m.
A Bivariant Theory for QuasiProjective Schemes.
Mona Mocanasu*, Northwestern University
(101119211) 
4:00 p.m.
Nonabelian localization in equivariant $K$theory.
Dan Edidin*, University of Missouri
(101119180)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on Calculus of Variations, III
Room 203, Burnett Hall
Organizers:
Mikil Foss, University of NebraskaLincoln mfoss@math.unl.edu
Giovanni Leoni, Carnegie Mellon University giovanni@andrew.cmu.edu

3:00 p.m.
RateIndependent Evolution Problems in ElastoPlasticity: a Variational Approach.
Gianni Dal Maso*, SISSA
(101149297) 
3:30 p.m.
A variational approach to quasistatic evolution for a class of dissipative materials.
Gilles A. Francfort*, L.P.M.T.M., Université ParisNord
(101174111) 
4:00 p.m.
Quasistatic evolution of steps along a phase boundary.
Anna Vainchtein*, Department of Mathematics, University of Pittsburgh
(101149234) 
4:30 p.m.
Asymptotic stability of solitary waves in models of water wave dynamics.
Robert L Pego*, Carnegie Mellon University
(101135339)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on Analysis of Partial Differential and Integral Equations, III
Room 232, Burnett Hall
Organizers:
Congming Li, University of Colorado Congming.Li@colorado.edu

3:00 p.m.
Topologically driven local minimizers of the OseenFrank energy.
Peter J Sternberg*, Department of Mathematics, Indiana University
Jacob Rubinstein, Department of Mathematics, Indiana University
Yunhui Kim, Department of Mathematics, Indiana University
(10114995) 
3:30 p.m.
Nonlinear Instability for the NavierStokes Equations.
Susan Friedlander*, University of IllinoisChicago
(10117675) 
4:00 p.m.
Free Boundary Euler Equations with Surface Tension.
Daniel Coutand, UC Davis
Steve Shkoller*, Dept. of Math, University of California at Davis
(101135373) 
4:30 p.m.
Some special boundary value problems for complex MongeAmp\`ere equations.
Bo Guan*, Ohio State University
(101135290)

3:00 p.m.
 Saturday October 22, 2005, 3:00 p.m.5:00 p.m.