
AMS Sectional Meeting Full Program
Current as of Saturday, October 29, 2005 01:24:04
Program 
Deadlines 
Registration/Housing/Etc. 
Special Event or Lecture 
Inquiries: meet@ams.org
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)

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)

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)

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

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

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

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

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

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

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

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

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

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

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)

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

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

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)

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

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

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

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)

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)

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)

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)

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)

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)

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)

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)

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

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)

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

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)

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)

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)

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)

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)

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

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

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)

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)

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)

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)

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

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

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

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

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

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

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

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)

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

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

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

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

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)

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)

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)

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

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)

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)

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)

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

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)

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)

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)

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)

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)

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)

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

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

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)

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)

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)

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)

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

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

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)

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)

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

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

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)

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

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

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

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
Inquiries: meet@ams.org

