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