AMS Sectional Meeting Full Program
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
Friday October 21, 2005

Friday October 21, 2005, 8:30 a.m.10:50 a.m.
Special Session on Randomness in Computation, I
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.
Quadratic Lower Bounds on Matrix Rigidity.
Satyanarayana V. Lokam*, Microsoft Research, Redmond, WA
(101168177) 
9:00 a.m.
Reconstructive Dispersers and Hitting Set Generators.
Christopher Umans*, Computer Science Dept., Caltech, Pasadena CA
(101168269) 
9:30 a.m.
If NP languages are hard on the worstcase then it is easy to find their hard instances.
Dan Gutfreund, Hebrew University
Ronen Shaltiel, University of Haifa
Amnon TaShma*, TelAviv University
(101168355) 
10:00 a.m.
Dimensions of CopelandErd\"os Sequences.
Jack H. Lutz*, Department of Computer Science, Iowa State University
(101168292) 
10:30 a.m.
FiniteState Dimension and Relative Frequencies.
Xiaoyang Gu*, Department of Computer Science, Iowa State University
(101168337)

8:30 a.m.

Friday October 21, 2005, 12:00 p.m.5:00 p.m.
Meeting Registration
Room 13B, Avery Hall 
Friday October 21, 2005, 12:00 p.m.5:00 p.m.
Exhibit and Book Sale
Room 13B, Avery Hall 
Friday October 21, 2005, 1:45 p.m.3:40 p.m.
Special Session on Combinatorial Matrix Theory, I
Room 120, Burnett Hall
Organizers:
Leslie Hogben, Iowa State University lhogben@iastate.edu
Bryan L. Shader, University of Wyoming bshader@uwyo.edu

1:45 p.m.
Sign patterns, inverses, and generalized inverses.
Thomas Britz, Technical University of Denmark
Dale Olesky, Department of Computer Science, University of Victoria, Canada
Pauline vanden Driessche, Department of Mathematics, University of Victoria, Canada
Bryan L. Shader*, Mathematics Department, University of Wyoming
(101115137) 
2:15 p.m.
On Spectrally Arbitrary Patterns.
Michael S. Cavers, Univeristy of Waterloo
InJae Kim, University of Wyoming
Bryan L. Shader, University of Wyoming
Kevin N. Vander Meulen*, Redeemer University College
(101115106) 
2:45 p.m.
Spectrally Arbitrary ZeroNonzero Patterns.
Judith J McDonald*, Washington State University
(101115159) 
3:15 p.m.
Ray Patterns, Determinants and Inversion.
Jeffrey Stuart*, Pacific Lutheran University
(101115179)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:35 p.m.
Special Session on Geometry of Differential Equations, I
Room 304, Oldfather 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

1:45 p.m.
On the twophase Stefan problem.
Marianne K. Korten, Kansas State University
Charles N. Moore*, Kansas State University
(10113515) 
2:15 p.m.
Existence, uniqueness and regularity of the free boundary in the HeleShaw problem with a degenerate phase.
Ivan Blank, Worcester Polytechnic Institute
Marianne Korten*, Kansas State University
Charles Moore, Kansas State University
(10113516) 
2:45 p.m.
The FinslerLandsberg problem again.
Gerard Thompson*, Department of Mathematics, The University of Toledo, 2801 W Bancroft St, Toledo, OH 43606
(101153302) 
3:15 p.m.
Partial Differential Equations which Admit Integrable Systems.
Paul Bracken*, University of Texas
(10115326)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:35 p.m.
Special Session on Nonlinear Analysis and Control of Partial Differential Equations, I
Room 204, 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

1:45 p.m.
Null Boundary Control: Heat and Schrodinger Equations in One Shot?
Walter Littman*, University of Minnesota
(101135198) 
2:15 p.m.
Global Stabilization of the Generalized Kortewegde Vries Equation Posed on a Finite Domain.
Lionel Rosier, Institut Elie Cartan, Universit\'e Nancy I
Bingyu Zhang*, Departmental of mathematical Sciences, University of Cincinnati
(101135241) 
2:45 p.m.
An Overview of Modelling Challenges for a Nonlinear PlateBeam Model.
Mary Ann Horn*, Vanderbilt University
(101193370) 
3:15 p.m.
Analyticity and Stability of Semigroups of Multilayer MeadMarkus Beam and Plate Models.
Scott Hansen*, Iowa State University
George Avalos, University of NebraskaLincoln
(101193126)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:40 p.m.
Special Session on Mathematical Education of Teachers, I
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

1:45 p.m.
The Mathematics Semester: A Mathematics  Mathematics Education Partnership at the University of Nebraska  Lincoln.
Ruth M. Heaton*, University of NebraskaLincoln
Jim Lewis, University of NebraskaLincoln
(101197300) 
2:15 p.m.
PMET at PCMI.
William McCallum*, University of Arizona
(101197230) 
2:45 p.m.
GeoSET: An Inquirybased Geometry Curriculum for Prospective Elementary Teachers.
John Wolfe*, Oklahoma State University
(101197375) 
3:15 p.m.
Integrating children's thinking in a mathematics content course for future elementary teachers.
Ekaterina Lioutikova*, Saint Joseph College
(101197210)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:30 p.m.
Special Session on KTheory and Algebraic Cycles, I
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

1:45 p.m.
Semitopological Ktheory of rationally connected threefolds.
Mircea Voineagu*, Northwestern University
(101119280) 
2:15 p.m.
Etale BP, with applications to quadratic forms.
Daniel C Isaksen*, Wayne State University
(101155213) 
2:45 p.m.
Cohomology of Bifunctors.
Vincent Franjou, Laboratoire Jean Leray, Universit\'e de Nantes
Eric M. Friedlander*, Department of Mathematics, Northwestern University
(101118207)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:35 p.m.
Special Session on Calculus of Variations, I
Room 203, Burnett Hall
Organizers:
Mikil Foss, University of NebraskaLincoln mfoss@math.unl.edu
Giovanni Leoni, Carnegie Mellon University giovanni@andrew.cmu.edu

1:45 p.m.
New variational principles for models of dielectric breakdown and polycrystal plasticity.
Marian Bocea*, University of Utah
(10114946) 
2:15 p.m.
Variational Methods in the Study of Imaging, Foams, Quantum Dots ... and More.
Irene Fonseca*, Carnegie Mellon University
(10114939) 
2:45 p.m.
On the extension of Lipschitz maps.
B. Dacorogna*, Ecole Polytechnique Federale de Lausanne
(101135378) 
3:15 p.m.
Necessary Conditions for a Minimum at a Radial Cavitating Singularity in Nonlinear Elasticity.
S. J. Spector*, Southern Illinois University Carbondale
J. Sivaloganathan, University of Bath
(10114941)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:35 p.m.
Special Session on Undergraduate Research, I
Room 110, Avery Hall
Organizers:
Richard L. Rebarber, University of NebraskaLincoln rrebarbe@math.unl.edu
Gordon S. Woodward, University of NebraskaLincoln gwoodwar@math.unl.edu

1:45 p.m.
Energy Measures on the Sierpinski Gasket.
Jonas Azzam*, University of NebraskaLincoln
(101130310) 
2:15 p.m.
The Tree Congestion of Graphs.
Diana Carr*, Central College, Pella, IA
(101105329) 
2:45 p.m.
Patterns in Genetic Data.
Leanne Hicks*, University of NebraskaLincoln
Brian Van Koten, Pitzer College
Aya Mitani, Pitzer College
(101192357) 
3:15 p.m.
A Birfurcation in the two by two linear system.
Steven Spriggs*, University of NebraskaLincoln
(101134352)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:35 p.m.
Special Session on Universal Algebra and Order, I
Room 208, Oldfather 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

1:45 p.m.
Algebraic characterizations for topological separation properties.
Wolfram Bentz*, University of Waterloo
(101106130) 
2:15 p.m.
Relation Algebras and Weak Representationis.
Jeremy F Alm*, Iowa State University
(101103349) 
2:45 p.m.
Message Authentication Codes and Quasigroup.
Kristen Meyer*, Iowa State University
(101117168) 
3:15 p.m.
Duality for central algebras.
Jonathan D.H. Smith*, Department of Mathematics, Iowa State University
(101108173)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:35 p.m.
Special Session on Scattering and Spectral Problems in Geometry, I
Room 307, Oldfather Hall
Organizers:
Peter A. Perry, University of Kentucky perry@ms.uky.edu
Alejandro Uribe, University of Michigan uribe@umich.edu

2:15 p.m.
Some Results Concerning Periodic Operators in High Contrast Media.
J L Selden*, University of Northern Iowa
(101135360) 
2:45 p.m.
Exotic expansions and pathological properties of $\zeta$functions on conic manifolds.
Paul Loya*, Binghamton University (SUNY)
Klaus Kirsten, Baylor University
Jinsung Park, Korea Institute for Advanced Study
(10115891) 
3:15 p.m.
Rays of minimal growth for elliptic cone operators.
Juan B. Gil, Penn State Altoona
Thomas Krainer, Univerist\"at Potsdam, Germany
Gerardo A. Mendoza*, Temple University
(10115889)

2:15 p.m.

Friday October 21, 2005, 1:45 p.m.3:30 p.m.
Special Session on Commutative Algebra and Representation Theory of Noetherian Rings, 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
Roger A. Wiegand, University of NebraskaLincoln rwiegand@math.unl.edu
Sylvia Margaret Wiegand, University of NebraskaLincoln swiegand@math.unl.edu

1:45 p.m.
Linkage theory of monomial ideals.
Craig Huneke*, University of Kansas
Bernd Ulrich, Purdue University
(101113147) 
2:45 p.m.
CohenMacaulay Endomorphism Rings.
Graham J Leuschke*, Syracuse University
(101113340)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:35 p.m.
Special Session on Recent Progress in Operator Algebras, I
Room 205, Burnett Hall
Organizers:
Allan P. Donsig, University of NebraskaLincoln adonsig@math.unl.edu
David R. Pitts, University of NebraskaLincoln dpitts@math.unl.edu

1:45 p.m.
Extension and Dilation Theorems for Operators Satisfying Relations.
David Opela*, Dept. of Mathematics, Washington University in St. Louis
(101147114) 
2:15 p.m.
Equivalence of groupoids associated to higherrank graphs with and without sources.
Cynthia Farthing*, University of Nebraska, Lincoln
(101146124) 
2:45 p.m.
Tensor algebras of C*correspondences and their C*envelopes.
Elias Katsoulis*, Department of Mathematics, East Carolina University
David Kribs, Department of Mathematics, University of Guelph
(101147109) 
3:15 p.m.
Derivations for a matrix function algebra.
Benton L Duncan*, North Dakota State University
(10114780)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:30 p.m.
Special Session on Mathematical and Engineering Aspects of Coding Theory, I
Room 121, Burnett Hall
Organizers:
Lance Perez, University of NebraskaLincoln lperez@unl.edu
Judy Walker, University of NebraskaLincoln jwalker@math.unl.edu

1:45 p.m.
Mathematical Topics in Coding Theory.
Vera Pless*, University of Illinois at Chicago
(101105127) 
2:45 p.m.
Communication Channel Models and Their Implications for Error Control.
Thomas E Fuja*, University of Notre Dame
(10119459)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:35 p.m.
Special Session on Dynamic Equations on Time Scales, I
Room 203, Oldfather Hall
Organizers:
Lynn H. Erbe, University of NebraskaLincoln lerbe@math.unl.edu
Allan C. Peterson, University of NebraskaLincoln apeterso@math.unl.edu

1:45 p.m.
Limits of SturmLiouville Eigenvalues When the Domain Shrinks to a Point.
Anton Zettl*, Northern Illinois University
Qingkai Kong, Northern Illinois University
Hongyou Wu, Northern Illinois University
(101134160) 
2:15 p.m.
Asymptotics of some $q$exponentials  are they always of order zero?
Moritz Simon*, Institute of Biomathematics and Biometry; GSF  National Research Center for Environment and Health; Neuherberg, Germany
(101133123) 
2:45 p.m.
Discrete Diffusion Equations.
Andreas L. Ruffing*, Department of Mathematics, Munich University of Technology, Garching, Germany
Maria Meiler, Department of Mathematics, Munich University of Technology, Garching, Germany
(101139363) 
3:15 p.m.
Finite Element Analysis of Quasistatic Variational Inequalities with Applications in Elastoplasticity and Contact Mechanics.
Weimin Han*, Department of Mathematics, University of Iowa
(10116508)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:35 p.m.
Special Session on Geometric Methods in Group Theory and Semigroup Theory, I
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

1:45 p.m.
Hanoi towers, automaton groups and branch groups.
R I Grigorchuk, Texas A&M University
Z Sunik*, Texas A&M University
(10112087) 
2:15 p.m.
Groups of finite type.
R I Grigorchuk*, Texas A&M University
(10112092) 
2:45 p.m.
Profinite groups, profinite trees, Stallings foldings and finite monoids.
Karl Auinger, University of Vienna
Benjamin Steinberg*, Carleton University
(101120142) 
3:15 p.m.
Groups acting on treegraded spaces.
Mark Sapir*, Vanderbilt University
(101120268)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:05 p.m.
Special Session on Randomness in Computation, II
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

1:45 p.m.
On the Complexity of Numerical Analysis.
Eric Allender*, Rutgers University
Peter Buergisser, University of Paderborn
Johan KjeldgaardPedersen, PA Consulting Group, Copenhagen
Peter Bro Miltersen, University of Aarhus
(101168219) 
2:15 p.m.
Stability and chaos in elections (with applications in mathematics and computer science).
Ryan W. O'Donnell*, Microsoft Research
(101160381) 
2:45 p.m.
Pseudorandom bits for low complexity classes: new results and applications.
Emanuele Viola*, Harvard University
(101168277)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:35 p.m.
Special Session on Graph Theory, I
Room 209, Oldfather 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

1:45 p.m.
On a Problem of Horak.
Jonathan Cutler*, University of NebraskaLincoln
(101105192) 
2:15 p.m.
More on Defensive Alliances in Graphs.
Grady Bullington, University of Wisconsin Oshkosh
Steven J Winters, University of Wisconsin Oshkosh
Linda Eroh*, University of Wisconsin Oshkosh
(101105244) 
2:45 p.m.
New Families of Isoperimetric Graphs.
Sergei L Bezrukov*, University of WisconsinSuperior
(101105369) 
3:15 p.m.
Generalized Tur\'an Theorem.
Yoshiharu Kohayakawa, Universidade de S\~{a}o Paulo, Brazil
Vojtech R\"odl, Emory University
Mathias Schacht, HumboldtUniversit\"at zu Berlin, Germany
Papa Amar Sissokho, Illinois State University
Jozef Skokan*, Universidade de S\~{a}o Paulo, Brazil
(10110583)

1:45 p.m.

Friday October 21, 2005, 1:45 p.m.3:35 p.m.
Special Session on Mathematical Ecology, I
Room 118, Avery Hall
Organizers:
David Logan, University of NebraskaLincoln dlogan@math.unl.edu
William Robert Wolesensky, College of St. Mary wwolesensky@CSM.edu

1:45 p.m.
Space: the final frontier of control theory in application to natural resource management.
Louis J. Gross*, University of Tennessee
(101192372) 
2:45 p.m.
Modelling the Evolution of Life Cycle Timing.
James Powell*, Utah State University
(101192391) 
3:15 p.m.
Temperature Induced Variations in Prey Foraging and Predation.
William R Wolesensky*, College of Saint Mary
J David Logan, University of Nebraska
(101192353)

1:45 p.m.

Friday October 21, 2005, 2:45 p.m.3:05 p.m.
Special Session on Analysis of Partial Differential and Integral Equations, I
Room 309, Oldfather Hall
Organizers:
Congming Li, University of Colorado Congming.Li@colorado.edu

2:45 p.m.
Global behavior of a system modelling chemotaxis.
Zhenbu Zhang*, Jackson State University
(10113517)

2:45 p.m.

Friday October 21, 2005, 2:45 p.m.3:35 p.m.
Special Session on Algebraic Geometry, I
Room 204, Oldfather Hall
Organizers:
Brian Harbourne, University of NebraskaLincoln bharbour@math.unl.edu
Bangere P. Purnaprajna, University of Kansas purna@math.ku.edu

2:45 p.m.
Toroidialization of morphisms of 3folds.
Steven D Cutkosky*, University of Missouri
(101114238) 
3:15 p.m.
On the resolutions of edge ideals.
Adam Van Tuyl*, Lakehead University
Huy Tai Ha, Tulane University
(10111393)

2:45 p.m.

Friday October 21, 2005, 4:00 p.m.4:50 p.m.
Einstein Public Lecture in Mathematics ``In celebration of the 100th anniversary of Albert Einstein's annus mirabilis"
The nature of space.
Auditorium, Kimball Recital Hall
Sir Michael Atiyah*, University of Edinburgh
(10110011) 
Friday October 21, 2005, 5:15 p.m.6:45 p.m.
Reception Hosted by the Department of Mathematics
Lobby, Van Brunt Visitor Center
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.
Special Session on Undergraduate Research, III
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

3:00 p.m.
The Root Squeezing Theorem.
Justin From*, Central College
Samuel Kolins, Bowdoin College
(101126361) 
3:30 p.m.
Rearranging Almost Convergent Sequences.
Christopher Bay*, SUNY at Stony Brook
(101140327) 
4:00 p.m.
Discussion: Going to Graduate School?

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on Algebraic Geometry, III
Room 111, Avery Hall
Organizers:
Brian Harbourne, University of NebraskaLincoln bharbour@math.unl.edu
Bangere P. Purnaprajna, University of Kansas purna@math.ku.edu

3:00 p.m.
Construction of rational surfaces in projective fourspace.
Hirotachi Abo*, Department of Mathematics, Colorado State University
(101114204) 
3:30 p.m.
Projective varieties with nef anticanonical divisors.
Qi Zhang*, Department of Mathematics, University of MissouriColumbia
(101114136) 
4:00 p.m.
Eigenschemes.
Donu Arapura, Purdue University
Chris Peterson*, Colorado State University
(101114286) 
4:30 p.m.
On $2$plane arrangements associated to the Petersen Graph.
Holger P. Kley*, Colorado State University
Hirotachi Abo, Colorado State University
Chris Peterson, Colorado State University
(101114336)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on Universal Algebra and Order, III
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

3:00 p.m.
Numerical invariants for varieties of algebras.
Joel Berman*, University of Illinois at Chicago
(101106102) 
3:30 p.m.
Morphisms on Coalgebras.
Key One Chung*, Iowa State University, Department of Mathematics
(101106129) 
4:00 p.m.
Structural Completeness in Algebras of Logic.
Jeffrey S. Olson*, University of Illinois at Chicago
(10110622) 
4:30 p.m.
The equational complexity of Vi{\v s}in's algebra.
George F. McNulty*, University of South Carolina
Zoltan Szekely, Gallaudet University
Ross Willard, University of Waterloo
(101108260)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on Scattering and Spectral Problems in Geometry, III
Room 205, Burnett Hall
Organizers:
Peter A. Perry, University of Kentucky perry@ms.uky.edu
Alejandro Uribe, University of Michigan uribe@umich.edu

3:00 p.m.
The wave invariants on twostep nilmanifolds.
Ruth Gornet*, University of Texas at Arlington
(101153148) 
3:30 p.m.
The Singularities of the Wave Trace of the Basic Laplacian on a Riemannian Foliation.
M. R. Sandoval*, Trinity College, Hartford, Connecticut
(101158143) 
4:00 p.m.
Why should we care about projectively flat connections?
William D Kirwin*, University of Notre Dame
(101151165) 
4:30 p.m.
Spectral Theory of PatternAvoiding Permutations.
Richard Ehrenborg, University of Kentucky
Sergey Kitaev, Reykjavik University
Peter A Perry*, University of Kentucky
(101105252)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.6:30 p.m.
Special Session on Association Schemes and Related Topics, B
Room 119, Avery Hall
Organizers:
Sung Yell Song, Iowa State university sysong@iastate.edu
Paul M. Terwilliger, University of Wisconsin terwilli@math.wisc.edu

3:00 p.m.
On Association Schemes of Odd Order.
PaulHermann Zieschang*, University of Texas at Brownsville
(101105389) 
3:30 p.m.
Characterization of some strongly regular graphs on 64 vertices.
Joohyung Kim*, Dept. of math. at Iowa State University
Sung Y. Song, Dept. of Math. at Iowa State University
(101105200) 
4:00 p.m.
Coherent configuration of type $AK(2)$ on 16 points and its mergings.
Mikhail H. Klin*, Department of Mathematics, BenGurion University of the Negev
Mikhail Muzychuk, Netanya Academic College
Sven Reichard, Greifswald, Germany
(101105222) 
4:30 p.m.
Association Schemes on 28 Points as Mergings of a HalfHomogeneous Coherent Configuration.
M Klin, BenGurion University of the Negev
M Muzychuk, Netanya Academic College
C Pech, Technische Universitaet Dresden
A Woldar*, Villanova University
PH Zieschang, University of Texas at Brownsville
(101105150) 
6:10 p.m.
Terwilliger algebras of certain wreath product schemes.
Sung Y. Song*, Iowa State University
(101105245)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on Recent Progress in Operator Algebras, III
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

3:00 p.m.
1Hyperreflexivity and Complete Hyperreflexivity.
Kenneth R. Davidson*, Pure Math. Dept., University of Waterloo
Rupert H. Levene, Pure Math. Dept., University of Waterloo
(10114788) 
3:30 p.m.
C*algebras associated with interval maps.
Valentin Deaconu*, University of Nevada, Reno
Fred Shultz, Wellesley College
(101146251) 
4:00 p.m.
Shift operator with two equal weights.
Yiu Tung Poon*, Iowa State University
Jasang Yoon, Iowa State University
(101147110) 
4:30 p.m.
The WellPosed Matrix Completion Problem.
David R. Larson*, Texas A&M University
(10114779)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on Mathematical and Engineering Aspects of Coding Theory, III
Room 121, Burnett Hall
Organizers:
Lance Perez, University of NebraskaLincoln lperez@unl.edu
Judy Walker, University of NebraskaLincoln jwalker@math.unl.edu

3:00 p.m.
Discussion 
3:30 p.m.
GraphTheoretic Constructions of LDPC Codes.
Matt Koetz*, Nazareth College
(101194288) 
4:00 p.m.
Minimal Pseudocodewords of Codes from Finite Geometries.
Roxana Smarandache*, Mathematics, Univ of Notre Dame/San Diego State University
Pascal O. Vontobel, Dept. of ECE, University of WisconsinMadison
(10119476) 
4:30 p.m.
Pseudocodewords of LDPC codes.
Ralf Koetter, University of Illinois,Urbana, IL, 61801
WenChing Winnie Li*, Pennsylvania State University, University Park, PA 16802
Pascal O. Vontobel, University of Wisconsin, Madison, WI 53706
Judy L. Walker, University of Nebraska, Lincoln, NE 685880130
(101105235)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on Dynamic Equations on Time Scales, III
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

3:00 p.m.
Generalized Convolution and Transforms.
John M Davis*, Baylor University
(101139366) 
3:30 p.m.
Functional Calculus for Discrete Time Scales II.
Billy Jackson*, Baylor University
John Davis, Baylor University
(101139146) 
4:00 p.m.
An Extension of the Fixed Point Theorem of Cone Expansion and Compression of Functional Type.
Richard I Avery*, Dakota State University
(101134132) 
4:30 p.m.
An Existence Result for a MultiPoint Boundary Value Problem on a Time Scale.
Bonita A. Lawrence*, Marshall University
Basant Karna, Marshall University
(101134377)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on Geometric Methods in Group Theory and Semigroup Theory, III
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

3:00 p.m.
Asymptotic density in free groups and $\mathbb Z^k$, Visible Points and Test Elements.
Ilya Kapovich*, University of Illinois at UrbanaChampaign
Igor Rivin, Temple University
Paul E Schupp, University of Illinois at UrbanaChampaign
Vladimir Shpilrain, City College of the City University of New York
(10112082) 
3:30 p.m.
Detecting the growth of freegroup automorphisms via their action on homology.
Adam Piggott*, Tufts University
(10112074) 
4:00 p.m.
Examples of retracts in a free group that are not the fixed subgroup of any group of automorphisms.
Laura I Ciobanu*, University of Auckland, New Zealand
Warren Dicks, Universitat Autonoma de Barcelona
(101120122) 
4:30 p.m.
Solving one variable equations in free groups.
Robert Gilman*, Stevens Institute of technology
(101120153)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on Graph Theory, III
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

3:00 p.m.
Odd crossing number is not crossing number.
Michael J. Pelsmajer*, Illinois Insitute of Technology, Department of Applied Mathematics
(101105333) 
3:30 p.m.
Random Geometric Graphs.
P. Balister, University of Memphis
B. Bollobas, University of Memphis
A. Sarkar*, University of Memphis
M. Walters, University of Cambridge
(101105182) 
4:00 p.m.
On graphs with few nonisomorphic induced subgraphs.
Maria Axenovich*, Department of Mathematics, Iowa State University
Jozsef Balogh, Department of Mathematics, University of Illinois at UrbanaChampaign
(101105195) 
4:30 p.m.
Signed Graph Factors and Degree Sequences.
Heather Jordon*, Illinois State University
Dean Hoffman, Auburn University
(101105243)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:50 p.m.
Special Session on Mathematical Ecology, III
Room 103, Burnett Hall
Organizers:
David Logan, University of NebraskaLincoln dlogan@math.unl.edu
William Robert Wolesensky, College of St. Mary wwolesensky@CSM.edu

3:00 p.m.
Integrodifference Equations, Invasions, and Branching Random Walks.
Mark Kot*, University of Washington, Seattle, WA
(101192164) 
4:00 p.m.
Group Formation in SelfOrganizing Collectives of Individuals.
R. A. Eftimie*, University of Alberta
M. A. Lewis, University of Alberta
G. deVries, University of Alberta
F. Lutscher, University of Ottawa
(101192104) 
4:30 p.m.
Invasion and persistence in heterogeneous stream flow environments.
Frithjof Lutscher*, University of Ottawa
Mark A. Lewis, University of Alberta
(101135131)

3:00 p.m.

Saturday October 22, 2005, 3:00 p.m.4:10 p.m.
Session for Contributed Papers
Room 124, Burnett Hall

3:00 p.m.
The defect in Jensen's Inequality.
A. M. Fink*, Prof. Em. Iowa State University
(10112609) 
3:15 p.m.
Numerical Approximation for Nonnegative $l_p$ Data Fitting.
Saïd Bahi*, Southern Utah University
(10119012) 
3:30 p.m.
Different Matrices with the Same Eigenvalues.
Donald Beken, University of North Carolina at Pembroke
Ralph DeMarr*, University of New Mexico
(10111537) 
3:45 p.m.
Ultra Hopfian Groups.
Violeta Vasilevska*, The University of South Dakota, Vermillion
(101157152) 
4:00 p.m.
Advanced numericalanalytical methods for path integral calculation and its application to some famous problems of 3D turbulence theory.New scenario for transition to slow turbulence.
Jaykov JSF Foukzon*, Prof. Israel Institute of Tech.
(10117605)

3:00 p.m.

Saturday October 22, 2005, 5:10 p.m.6:00 p.m.
Invited Address
Ear Modeling, Auditory Transforms and Applications.
Room 115, Burnett Hall
Jack Xin*, University of California at Irvine
(101135395)
Sunday October 23, 2005

Sunday October 23, 2005, 8:00 a.m.11:20 a.m.
Special Session on Calculus of Variations, IV
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.
Global Lipschitz regularity of minimizers for asymptotically convex integrals.
Mikil Foss*, University of NebraskaLincoln
(101149320) 
8:30 a.m.
Variational multiscale problems and applications to thin films.
Margarida N Ba\'ia*, Instituto Superior T\'ecnico
(101149273) 
9:00 a.m.
A model for the epitaxial growth of an elastic thin film on a latticemismatched substrate.
Irene Fonseca, Carnegie Mellon University
Nicola Fusco, University of Naples
Giovanni Leoni, Carnegie Mellon University
Massimiliano Morini*, International School for Advanced Studies of Trieste
(101149232) 
9:30 a.m.
Periodic phase separation: the periodic CahnHilliard and isoperimetric problems.
Peter J Sternberg*, Department of Mathematics, Indiana University
Rustum Choksi, Department of Mathematics, Simon Fraser University
(10114997) 
10:00 a.m.
Vortices in 2D BoseEinstein condensates.
Radu Ignat, Laboratoire J.L. Lions, University Paris 6
Vincent Millot*, Carnegie Mellon University
(101135167) 
10:30 a.m.
Lagrangian cartesian currrents and weak continuity of the determinant of the Hessian.
Robert L Jerrard*, University of Toronto
(101158258) 
11:00 a.m.
A twodimensional compressible membrane theory as a Gammalimit of threedimensional incompressible elasticity.
Georg K Dolzmann*, Mathematics Department, University of Maryland, College Park, MD 20742
(101149322)

8:00 a.m.

Sunday October 23, 2005, 8:00 a.m.9:50 a.m.
Special Session on Universal Algebra and Order, IV
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.
Almost Distributive Sublattices and Congruence Heredity.
John W Snow*, Sam Houston State University
(10110632) 
8:30 a.m.
When voter preferences are partially ordered.
Michael Ackerman, Bellarmine University
SulYoung Choi, LeMoyne College
Peter Coughlin, University of Maryland
Eric Gottlieb, Rhodes College
Japheth Wood*, Chatham College
(101106263) 
9:00 a.m.
Tensor Products of Semilattices, Semimodularity and Supersolvability (A Problem of E. T. Schmidt from 1974 and Some Conjectures of Quackenbush from 1985).
Jonathan David Farley*, Center for International Security, Stanford University
(101106299) 
9:30 a.m.
Nondualizability of finite algebras with a semilattice operation.
David M. Clark, SUNY at New Paltz
Brian A. Davey, La Trobe University
Jane G. Pitkethly, La Trobe University
Ross Willard*, University of Waterloo
(101106394)

8:00 a.m.

Sunday October 23, 2005, 8:00 a.m.11:20 a.m.
Special Session on Association Schemes and Related Topics, III
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.
On Euclidean designs.
Etsuko Bannai*, Faculty of Mathematics, Graduate school, Kyushu University
(101105118) 
8:30 a.m.
GelfandTzetlin bases and association schemes.
Kenneth W Johnson*, Penn Sate University, Abington College
(101105256) 
9:00 a.m.
Homogeneous Ppolynomial Integral Table Algebras.
Harvey I. Blau, Northern Illinois University
Robert J. Hein*, Northern Illinois University
(101113145) 
9:30 a.m.
Polygonal Designs: Existence and Construction.
Gargi Bhattacharyya*, Dept. of math. at Iowa State University
John Hegeman, Stanford University
Jeff Langford, Drake University
Joohyung Kim, Iowa State University
Sung Y. Song, Iowa State University
(101105314) 
10:00 a.m.
A new method of finding fusion schemes.
Jianmin Ma*, Oxford College of Emory University
(101105208) 
10:30 a.m.
Duality of BoseMesner algebras.
Brian W Curtin*, University of South Florida
(101105141) 
11:00 a.m.
Some remarks on imprimitive cometric (Qpolynomial) association schemes.
William J. Martin*, Department of Mathematical Sciences, WPI
Jason S. Williford, Department of Mathematical Sciences, WPI
(101105376)

8:00 a.m.

Sunday October 23, 2005, 8:00 a.m.11:20 a.m.
Special Session on Dynamic Equations on Time Scales, IV
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.
Delay Dynamic Equations with Stability.
Robert J. Krueger*, Concordia University, St. Paul
Douglas R. Anderson, Concordia College
Allan C. Peterson, University of NebraskaLincoln
(10113996) 
8:30 a.m.
Linear Fractional Difference Equations.
Paul W Eloe*, University of Dayton
Ferhan Atici, Western Kentucky University
(10113929) 
9:00 a.m.
Oscillation and nonoscillation of forced second order dynamic equations.
Martin Bohner*, University of MissouriRolla
Christopher C Tisdell, University of New South Wales
(101139264) 
9:30 a.m.
On Regularly and Strongly Decaying Solutions of Quasilinear Dynamic Equations.
Elvan AkinBohner*, University of MissouriRolla
(101134354) 
10:00 a.m.
Oscillation for oddorder neutral $\Delta$differential delay equations on a time scale.
Ronald M Mathsen*, North Dakota State University
(10113414) 
10:30 a.m.
Detection of the connecting orbits using the boundary map in Conley index theory.
Catalin Georgescu*, Department of Mathematical Sciences, The University of South Dakota
(10113721) 
11:00 a.m.
Periodicity and Stability in Neutral Nonlinear Dynamic Equations with Functional Delay on a Time Scale.
Eric R Kaufmann*, University of Arkansas at Little Rock
Youssef N Raffoul, University of Dayton
(101134157)

8:00 a.m.

Sunday October 23, 2005, 8:00 a.m.11:20 a.m.
Special Session on Mathematical Ecology, IV
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.
Map reduction for bifurcations en a route to bursting activity in neuron models.
Andrey Shilnikov*, Department of Mathematics & Statistics, GSU
Paul Channel, Department of Mathematics & Statistics, GSU
Genndady Cymbalyuk, Dept Physics and Astronomy, GSU
(101137217) 
8:30 a.m.
Front Solutions to Spatially Discrete Nerve Axon Models.
Christopher Erhart Elmer*, New Jersey Institute of Technology
(101139231) 
9:00 a.m.
The evolution of dispersal in patchy environments.
Steve Kirkland, University of Regina
ChiKwong Li, The College of William and Mary
Sebastian Schreiber*, The College of William and Mary
(101192321) 
10:00 a.m.
Asymptotic Analysis of the Spruce Budworm Model.
Glenn Ledder*, Department of Mathematics, University of NebraskaLincoln
(101192319) 
10:30 a.m.
Bistable Waves in Discrete Media.
Erik S Van Vleck*, Department of Mathematics/University of Kansas
(101135390) 
11:00 a.m.
PoissonNernstPlanck systems for narrow tubularlike membrane channels.
Weishi Liu*, University of Kansas
Bixiang Wang, New Mexico Institute of Mining and Technology
(101137393)

8:00 a.m.

Sunday October 23, 2005, 8:30 a.m.11:30 a.m.
Special Session on Combinatorial Matrix Theory, IV
Room 19, Avery Hall
Organizers:
Leslie Hogben, Iowa State University lhogben@iastate.edu
Bryan L. Shader, University of Wyoming bshader@uwyo.edu

8:30 a.m.
Matrix Completion Problems.
Leslie Hogben*, Iowa State University
(10111547) 
9:00 a.m.
Some results on the matrix completion problem for various classes of $P_{0,1}$matrices.
Amy Wangsness*, Fitchburg State College
(101115161) 
9:30 a.m.
The Totally Nonnegative Completion Problem.
Brenda K. Kroschel*, Univ. of St. Thomas
Charles R. Johnson, College of William and Mary
Emily B. Dryden, McGill University
(101115262) 
10:00 a.m.
Some recent matrix results in mathematical biology.
ChiKwong Li*, College of William and Mary
(10111543) 
10:30 a.m.
Linear maps transforming the higher numerical ranges.
Chi Kwong Li, College of William and Mary
Yiu Tung Poon*, Iowa State University
Nung Sing Sze, The University of Hong Kong
(101115189) 
11:00 a.m.
Some Results on Structured Mmatrices.
J. Ding*, Department of Mathematics, The University of Southern Mississippi
Wallace C. Pye, Department of Mathematics, The University of Southern Mississippi
(10111530)

8:30 a.m.

Sunday October 23, 2005, 8:30 a.m.11:20 a.m.
Special Session on Nonlinear Analysis and Control of Partial Differential Equations, IV
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

8:30 a.m.
Elliptic sineGordon equation.
Zhonghai Ding*, University of Nevada Las Vegas
(10113564) 
9:00 a.m.
Stochastic Equations with a Fractional Brownian Motion.
Tyrone E. Duncan*, University of Kansas
(101160166) 
9:30 a.m.
Hadamard Wellposedness for a Class of Nonlinear Shallow Shell Problems.
Catherine Lebiedzik*, Wayne State University
(101135392) 
10:00 a.m.
The VlasovPoisson System with Infinite Mass and Energy.
Stephen D Pankavich*, Indiana University
(101135374) 
10:30 a.m.
Solvability of the Possio integral equation.
Peter L Polyakov*, University of Wyoming
(101145184) 
11:00 a.m.
Stochastic Differential Equations in a Hilbert Space Induced from a Fractional Brownian Motion.
Bozenna J. PasikDuncan*, University of Kansas
(101160384)

8:30 a.m.

Sunday October 23, 2005, 8:30 a.m.11:15 a.m.
Special Session on Commutative Algebra, III
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.
Vanishing of Ext and Tor over certain local rings.
David A. Jorgensen*, University of Texas at Arlington
(101113272) 
9:30 a.m.
Strict Map of Modules and Intersection Multiplicity.
Sankar P Dutta*, Dept. of Mathematics, University of Illinois at UrbanaChampaign
(10111356) 
10:30 a.m.
Squarezero matrices over commutative local rings.
Luchezar L. Avramov*, University of Nebraska, Lincoln
RagnarOlaf Buchweitz, Universty of Toronto
Srikanth Iyengar, University of Nebraska
Claudia Miller, Syracuse University
(101113259)

8:30 a.m.

Sunday October 23, 2005, 8:30 a.m.11:20 a.m.
Special Session on KTheory and Algebraic Cycles
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.
Two Extended Forms of the HirzebruchRiemannRoch Formula.
CY. Jean Chan*, Department of Mathematical Sciences, University of Arkansas
(101113284) 
9:00 a.m.
Comparing cycles in positive and mixed characteristic.
Paul C Roberts*, University of Utah
(101113229) 
10:00 a.m.
Projective modules over smooth real affine varieties.
S. M. Bhatwadekar, School of Mathematics, Tata Institute of Fundamental Research, India
Mrinal K. Das*, University of Kansas
Satya Mandal, University of Kansas
(101113247) 
10:30 a.m.
Cyclic homology, $cdh$cohomology and negative $K$theory.
G Corti\~nas, Universidad de Valladolid
C Haesemeyer, University of Illinois
M Schlichting, Louisiana State University
C Weibel*, Rutgers University
(10111963)

8:30 a.m.

Sunday October 23, 2005, 8:30 a.m.11:20 a.m.
Special Session on Analysis of Partial Differential and Integral Equations, IV
Room 232, Burnett Hall
Organizers:
Congming Li, University of Colorado Congming.Li@colorado.edu

8:30 a.m.
A parabolic equation with coefficients in a new Kato type class.
Qi S. Zhang*, Math. Dept. University of California Riverside
(101135293) 
9:00 a.m.
Isolated Singularities of Nonlinear Elliptic Inequalities.
Steven D. Taliaferro*, Texas A&M University
(10113572) 
9:30 a.m.
Ramified transportation and the formation of tree leaves.
Qinglan Xia*, University of California at Davis
(101149318) 
10:00 a.m.
Global WellPosedness of Some PDEs of Fluid Type.
Tom Hou, CalTech
Congming Li*, Applied Math, Univ of Colorado, Boulder, CO 80309
(10113569) 
10:30 a.m.
Vorticity and Regularity of Viscous 3D Incompressible Flows.
Ning Ju*, Oklahoma State University
(10113518) 
11:00 a.m.
Stability of Traveling wave solutions of Nonlinear Reaction Diffusion Equations.
XiaoJie Hou, The University of Cincinnati
Yi Li*, University of Iowa
(101135386)

8:30 a.m.

Sunday October 23, 2005, 8:30 a.m.11:20 a.m.
Special Session on Undergraduate Research, IV
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.
SampledData Stabilization of a Beam Equation.
Jonas Azzam, University of NebraskaLincoln
Jesse Windle*, University of TexasAustin
(101193309) 
9:00 a.m.
Alexander Quandle Identification.
Gabriel Murillo*, University of California, Riverside
Sam Nelson, University of California, Riverside
Anthony Thompson, University of California, Riverside
(101155341) 
9:30 a.m.
Twist Number for Graphs.
Thomas Albertson*, California State University, Long Beach
(101105312) 
10:00 a.m.
A Genetic Algorithm For the Minimum Tollbooth Problem.
Corby Harwood*, Whitworth College, Spokane, WA
(101190335) 
10:30 a.m.
Virtually cyclic subgroups of threedimensional crystallographic groups.
Andrew Gainer*, Mercer University, Macon, GA
Lisa Lackney, University of Akron
Katelyn Parker, Wellesley College
(101120332) 
11:00 a.m.
The Pebbling Number for Graphs.
Joyce Charlesworth, WarrenWilson College
Theang Ho*, University of NebraskaLincoln
Brian Keinath, Central Michigan University
David Lin, Princeton University
(101105338)

8:30 a.m.

Sunday October 23, 2005, 8:30 a.m.10:50 a.m.
Special Session on Algebraic Geometry, IV
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.
Set theoretic complete intersection of ideals in a regular affine algebra.
Ze Min Zeng*, Washington University in St. Louis
(101113185) 
9:00 a.m.
Generators for vector bundles.
Mohan Kumar Neithalath, Washington University in St. Louis, St. Louis MO
A. P. Rao, University of Missouri St. Louis
Ravindra V Girivaru*, Washington University in St. Louis, St. Louis MO
(101114221) 
9:30 a.m.
The Jacobian Conjecture as a Problem in Combinatorics.
David L Wright*, Washington University
(101114196) 
10:00 a.m.
Minimal Separators of fat points in $\mathbb{P}^n$.
Elena Guardo*, Dipartimento di Matematica e Informatica  Catania  Italy
Lucia Marino, Dipartimento di Matematica e Informatica  Catania  Italy
(101114265) 
10:30 a.m.
The GreenGriffithsKobayashi conjectures on algebraic degeneracy.
Karen Anne Chandler*, University of Missouri  St. Louis
PitMann Wong, University of Notre Dame
(101113364)

8:30 a.m.

Sunday October 23, 2005, 8:30 a.m.9:20 a.m.
Special Session on Scattering and Spectral Problems in Geometry, IV
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.
Determinant of Laplacian associated to a Kleinian group.
Andrew McIntyre*, Centre de recherches math\'ematiques
(101158350) 
9:00 a.m.
Linearized boundary distance rigidity problem and DirichlettoNeumann map.
Vladimir A. Sharafutdinov*, Sobolev Institute of Mathematics
(101158139)

8:30 a.m.

Sunday October 23, 2005, 8:30 a.m.11:20 a.m.
Special Session on Recent Progress in Operator Algebras, IV
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.
A Contractive MASA Bimodule Projection Whose Range Is Not a SubTRO.
Vern Ival Paulsen*, Mathematics Department, University of Houston
(101147267) 
9:00 a.m.
Operator Quantum Error Correction.
David W Kribs*, Institute for Quantum Computing and University of Guelph
(101181121) 
9:30 a.m.
An additive formula for invariant subspaces and their complements.
Xiang Fang*, Kansas State University
(101147154) 
10:00 a.m.
Covariant Poisson structures on complex Grassmannians.
A. Sheu*, University of Kansas
N. Ciccoli, Universit/'a di Perugia
(101153313) 
10:30 a.m.
${Z}^{2}$actions and semicrossed products.
Justin R. Peters*, Iowa State University
(10114765) 
11:00 a.m.
Fock space techniques in tensor algebras of directed graphs.
Alvaro Arias*, University of Denver
(101146120)

8:30 a.m.

Sunday October 23, 2005, 8:30 a.m.11:20 a.m.
Special Session on Geometric Methods in Group Theory and Semigroup Theory, IV
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.
What properties do groups of random knots have?
Paul Schupp*, University of Illinois
Kari Barkley, Lafayette College
(101120274) 
9:00 a.m.
Ends for Monoids and Semigroups.
Vesna Kilibarda*, Indiana University Northwest
David A. Jackson, Saint Louis University
(10112027) 
9:30 a.m.
A criterion for property FA$_n$.
Angela K. Barnhill*, The Ohio State University
(101120331) 
10:00 a.m.
Artin groups in a continuous context.
Jon McCammond*, UC Santa Barbara
(101120169) 
10:30 a.m.
Rewriting systems and orderings on Artin monoids.
Patrick Bahls*, The University of North Carolina, Asheville
Tyler Smith, Vanderbilt University
(101120246) 
11:00 a.m.
Minimal Splittings of Coxeter Groups.
Michael L Mihalik*, Vanderbilt University
Steve Tschantz, Vanderbilt University
(101120285)

8:30 a.m.

Sunday October 23, 2005, 8:30 a.m.11:20 a.m.
Special Session on Graph Theory, IV
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.
Multidecomposition of the Complete Graph with Various Leaves.
Atif Abueida*, University of Dayton
(101105305) 
9:30 a.m.
Ranks of Complements of Graphs.
Gayla S Domke*, Purdue University North Central
George J Davis, Georgia State University
Charles R Garner, Rockdale County High School
(101105351) 
10:00 a.m.
Combinatorial structures with regular (full) automorphism group.
Robert Jajcay*, Indiana State University
(101105358) 
10:30 a.m.
Hamilton paths in cubic Cayley graphs.
Henry H Glover*, Ohio State University
Dragan Maru\v si\v c, IMFM, University of Ljubljana
(101105190) 
11:00 a.m.
Local $3$colorings of complete graphs.
Steven Klee, Valparaiso University
Daniel Menna, Valparaiso University
Amy Palash, Valparaiso University
Zsuzsanna Szaniszlo*, Valparaiso University
William Young, Valparaiso University
(101105242)

8:30 a.m.

Sunday October 23, 2005, 9:00 a.m.11:20 a.m.
Special Session on Geometry of Differential Equations, IV
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.
Moving Frames for Lie Pseudogroups.
Peter J. Olver*, University of Minnesota
(10115831) 
9:30 a.m.
Variational Calculus in Moving Frames.
Irina A Kogan*, North Carolina State University
Ian Anderson, Utah State University
(10115371) 
10:00 a.m.
Shallow water equation on a symplectic submanifold and solutions.
Zhijun George Qiao*, University of Texas  Pan American
(10113585) 
10:30 a.m.
Geometric Invariant Theory on Killing Tensors.
Roman Smirnov*, Department of Mathematics and Statistics, Dalhousie University
(101153343) 
11:00 a.m.
Representations of lowdimensional Lie algebras.
Ryad A Ghanam*, University of Pittsburgh at Greensburg
(101153214)

9:00 a.m.

Sunday October 23, 2005, 9:00 a.m.11:20 a.m.
Special Session on Representation Theory of Noetherian Rings, III
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

9:00 a.m.
Mixed Polynomial/Power Series Rings and Relations among their Spectra.
William Heinzer*, Purdue University
Christel Rotthaus, Michigan State University
Sylvia Wiegand, University of Nebraska
(10111368) 
9:30 a.m.
Generic Rings for Local Cohomology.
Raymond C Heitmann*, University of Texas at Austin
(101113276) 
10:00 a.m.
The core of ideals in arbitrary characteristic.
Louiza Fouli*, Purdue University
(101113257) 
10:30 a.m.
Integrally closed overrings of twodimensional Noetherian domains.
Bruce Olberding*, New Mexico State University
(101113223) 
11:00 a.m.
Rings cofinite in their Henselization.
Peter Vamos*, Department of Mathematical Sciences, University of Exeter, UK
(101113311)

9:00 a.m.

Sunday October 23, 2005, 9:00 a.m.11:20 a.m.
Special Session on Mathematical and Engineering Aspects of Coding Theory, IV
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.
Duality Theory for SpaceTime Codes over Finite Fields.
David Grant*, University of Colorado at Boulder
Mahesh K Varanasi, University of Colorado at Boulder
(101194291) 
9:30 a.m.
McEliece Theorems for Cyclic Codes over Galois Rings.
Daniel J. Katz*, Princeton University, Department of Mathematics
(101105253) 
10:00 a.m.
sExtremal Additive GF(4) Codes.
JonLark Kim*, University of Louisville
Judy Walker, University of Nebraska  Lincoln
(101194289) 
10:30 a.m.
SelfDual Codes over $Z_8$ and $Z_9$.
Steven Dougherty, University of Scranton
Aaron Gulliver*, University of Victoria
(101194144) 
11:00 a.m.
Invariantbased Face Recognition.
Nigel Boston*, University of Wisconsin, Madison
(101122283)

9:00 a.m.

Sunday October 23, 2005, 11:40 a.m.12:30 p.m.
Invited Address
LDPC codes and their pseudocodewords.
Room 115, Burnett Hall
Judy L. Walker*, University of Nebraska
(101194315) 
Sunday October 23, 2005, 2:00 p.m.3:20 p.m.
Special Session on Nonlinear Analysis and Control of Partial Differential Equations, V
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

2:00 p.m.
A discontinuous solution for the timedependent compressible NavierStokes system in a bounded domain.
Minsu Song*, Department of Mathematics,Pohang University of Science and Technology,Korea
(10113528) 
2:30 p.m.
Computation of controllable pairs in discretizations of the Schroedinger equation.
Katherine A. Kime*, Department of Mathematics and Statistics, University of Nebraska at Kearney, Kearney NE 68849
(101193162) 
3:00 p.m.
Some controllability results for parabolic equations by means of multiplicative and nonnegative additive controls of local support.
Alexander Y Khapalov*, Washington State University
Luis Alberto Fernandez, Universidad de Cantabria, Spain
(101193324)

2:00 p.m.

Sunday October 23, 2005, 2:00 p.m.2:50 p.m.
Special Session on Calculus of Variations, V
Room 203, Burnett Hall
Organizers:
Mikil Foss, University of NebraskaLincoln mfoss@math.unl.edu
Giovanni Leoni, Carnegie Mellon University giovanni@andrew.cmu.edu

2:00 p.m.
The structure of spaces of maps into homogeneous spaces.
Dave Auckly*, Kansas State University
Lev Kapitanski, University of Miami
(10115824) 
2:30 p.m.
Homogeneous spaces and FaddeevSkyrme model.
Sergiy V. Koshkin*, Kansas State University
(101158275)

2:00 p.m.

Sunday October 23, 2005, 2:00 p.m.2:50 p.m.
Special Session on Dynamic Equations on Time Scales, I
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

2:00 p.m.
Positive solutions of the nonlinear semipositone SturmLiouville problem on time scales.
Nickolai Kosmatov*, University of Arkansas at Little Rock
(101134362) 
2:30 p.m.
Discrete Solutions of Basic Diffusion Equations.
Andreas Dr. Ruffing, Technical University Munich, Germany
Maria Meiler*, Technical University Munich, Germany
(101100346)

2:00 p.m.

Sunday October 23, 2005, 2:00 p.m.3:20 p.m.
Special Session on Geometric Methods in Group Theory and Semigroup Theory, V
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

2:00 p.m.
Embeddings of rightangled Artin groups into graph braid groups.
Lucas A Sabalka*, University of Illinois at UrbanaChampaign
(101120125) 
2:30 p.m.
The Simultaneous Conjugacy Problem for Thompson's Group $F$ is Solvable.
Francesco Matucci*, Cornell University
Martin Kassabov, Cornell University
(101120128) 
3:00 p.m.
On the Homotopy Classification of 1Relator Groups.
Jens Harlander*, Western Kentucky University
Jaqueline A Jensen, Sam Houston State University
(101120383)

2:00 p.m.