AMS Sectional Meeting Full Program
Current as of Tuesday, April 12, 2005 15:21:44
2004 Fall Central Section Meeting
Evanston, IL, October 2324, 2004
Meeting #1001
Associate secretaries: Susan J Friedlander, AMS susan@math.northwestern.edu
Saturday October 23, 2004

Saturday October 23, 2004, 7:00 a.m.4:00 p.m.
Exhibit and Book Sale
Room L 150, Technological Institute 
Saturday October 23, 2004, 7:15 a.m.4:00 p.m.
Meeting Registration
Lobby, Technological Institute 
Saturday October 23, 2004, 8:00 a.m.11:20 a.m.
Special Session on Solving Polynomial Systems, I
Room G 43, Donald P. Jacobs Center
Organizers:
Anton Leykin, University of Illinois at Chicago leykin@math.uic.edu
Jan Verschelde, University of Illinois at Chicago jan@math.uic.edu

8:00 a.m.
Homotopies to Compute Intersections of Solution Components of Polynomial Systems.
Andrew J Sommese*, University of Notre Dame
(10016591) 
8:30 a.m.
Solving Polynomial Systems by Intersecting Subsystems Using Diagonal Homotopies.
Andrew J Sommese, University of Notre Dame
Jan Verschelde, University of Illinois at Chicago
Charles W Wampler*, General Motors R&D Center
(100165104) 
9:00 a.m.
Advantages of Parsing Polynomials into Straightline Programs.
Daniel J Bates*, University of Notre Dame
(100168243) 
9:30 a.m.
Break 
10:00 a.m.
Is the attained solution isolated?
TienYien Li*, Department of Mathematics, Michigan State University, E.Lansing,MI
(100165201) 
10:30 a.m.
Newton's Method with Deflation for Isolated Singularities of Polynomial Systems.
Anton Leykin, University of Illinois at Chicago
Jan Verschelde, University of Illinois at Chicago
Ailing Zhao*, University of Illinois at Chicago
(100165235) 
11:00 a.m.
Determination of the dimension of a variety and some applications.
Wenyuan Wu*, Department of Applied Mathematics, University of Western Ontario
Greg Reid, Department of Applied Mathematics, University of Western Ontario
(10011494)

8:00 a.m.

Saturday October 23, 2004, 8:30 a.m.10:50 a.m.
Special Session on Iterated Function Systems and Analysis on Fractals, I
Room L 160, Technological Institute
Organizers:
KaSing Lau, Chinese University of Hong Kong kslau@math.cuhk.edu.hk
Stephen S.T. Yau, University of Illinois at Chicago yau@uic.edu

8:30 a.m.
Orthogonal families of exponentials.
Steen Pedersen*, Wright State University
(100128361) 
9:00 a.m.
Variable coefficient Iterated Function Systems associated with multiresolution analysis.
Palle E. T. Jorgensen*, University of Iowa
(10014605) 
9:30 a.m.
Refinable functions with arbitrary dilations.
Yang Wang*, Georgia Institute of Technology
Dejun Feng, Tsinghua University
(10012807) 
10:00 a.m.
The 3x+1 Semigroup.
David Applegate, At&T LabsResearch
Jeffrey C Lagarias*, University of Michigan
(100111352) 
10:30 a.m.
On the Connectedness and Disklikeness of Selfaffine Tiles.
KaSing Lau*, Department of Mathematics, The Chinese University of Hong Kong
King Shun Leung, Department of Mathematics, Hong Kong Inst.of Education
(10012654)

8:30 a.m.

Saturday October 23, 2004, 8:30 a.m.11:20 a.m.
Special Session on Nonlinear Waves, I
Room L R2, Technological Institute
Organizers:
Jerry L. Bona, University of Illinois at Chicago bona@math.uic.edu
Shuming Sun, Virginia Polytechnic Institute and State University sun@math.vt.edu
Bingyu Zhang, University of Cincinnati bzhang@math.uc.edu

8:30 a.m.
Collapse dynamics in YangMills, nonlinear Schroedinger and KellerSegel equations.
I M Sigal*, University of Notre Dame and University of Toronto
(100135368) 
9:00 a.m.
Eventual Periodicity for dispersive wave equations in a quarter plane.
Jiahong Wu*, Oklahoma State University
(100135152) 
9:30 a.m.
Comparison of Quarterplane and Twopoint Boundary Value Problems: The BBMequation.
Hongqiu Chen*, Univerity of Memphis and University of Illinois at Chicago
Jerry L Bona, University of Illinois at Chicago
Shuming Sun, Virginia Polytechnic Institute and State University
Bingyu Zhang, University of Cincinnati
(100135327) 
10:00 a.m.
Beyond 3/4 for the Kortewegde Vries Equation.
Jerry L. Bona, University of Illinois at Chicago
Shuming Sun, Virginia Tech
BingYu Zhang*, University of Cincinnati
(100135158) 
10:30 a.m.
The initialboundary value problem for the onedimensional nonlinear Schr\"odinger equation.
Justin Holmer*, University of California, Berkeley
(100135309) 
11:00 a.m.
Spectra of Positive and Negative Energies in the Linearized NLS Problem.
Vitali G Vougalter*, University of Notre Dame Department of Mathematics
(100135408)

8:30 a.m.

Saturday October 23, 2004, 8:30 a.m.10:45 a.m.
Special Session on Mathematical Problems in Robotics, I
Room A 110, Technological Institute
Organizers:
Robert W. Ghrist, University of Illinois at UrbanaChampaign ghrist@math.uiuc.edu

8:30 a.m.
Mathematical and Computational Models in Robotics and Structural Biology.
Gregory S. Chirikjian*, Johns Hopkins University
(100143128) 
9:00 a.m.
Regulation of Walking Speed in Bipedal Locomotion.
Mark W Spong*, University of Illinois at UrbanaChampaign
(10019352) 
9:30 a.m.
Topological Localization and Mapping in the Horizontal Plane via Successive Visual Registration.
Daniel Koditschek*, University of Michigan
Gabriel Lopes, University of Michigan
(100193374) 
10:00 a.m.
Computer Vision Challenges: 3D Photography and Object Recognition.
Jean A Ponce*, University of Illinois at UrbanaChampaign
(100168290)

8:30 a.m.

Saturday October 23, 2004, 8:30 a.m.10:50 a.m.
Special Session on Algebraic Representations and Deformations, I
Room LG 52, Technological Institute
Organizers:
Stephen R. Doty, Loyola University of Chicago doty@math.luc.edu
Anthony Giaquinto, Loyola University of Chicago tonyg@math.luc.edu

8:30 a.m.
Endotrivial modules for finite groups of Lie type (joint work with J. Carlson and D. Nakano).
Nadia Paola Mazza*, University of Georgia, Athens, GA
(10012089) 
9:00 a.m.
Ideal Structure of Iterated Smash Tensor Power of the Restricted Enveloping Algebra of $sl_2$.
Stefan Catoiu*, DePaul University
(100116386) 
9:30 a.m.
Algebras related to branching rules.
Jeb F. Willenbring*, University of Wisconsin  Milwaukee
(100122272) 
10:00 a.m.
FCR factors of Enveloping algebras.
Ian M Musson*, Department of Mathematical Sciences, University of WisconsinMilwaukee
Jeb F. Willenbring, Department of Mathematical Sciences, University of Wisconsin
(100116389) 
10:30 a.m.
Fixed Subrings of Noetherian Graded Regular Rings.
Ellen E. Kirkman*, Wake Forest University
James J. Kuzmanovich, Wake Forest University
(100116262)

8:30 a.m.

Saturday October 23, 2004, 8:30 a.m.11:20 a.m.
Special Session on Mathematical Techniques in Musical Analysis, I
Auditorium, Technological Institute
Organizers:
Judith Baxter, University of Illinois at Chicago baxter@uic.edu
Richard Cohn, University of Chicago rcohn@uchicago.edu
Robert Peck, Louisiana State University rpeck@lsu.edu

8:30 a.m.
Musical Properties of QuasiPeriodic Sequences.
Norman A Carey*, Eastman School of Music
David L Clampitt, Yale University
(100111178) 
9:30 a.m.
Some remarks about wellformedness.
Domenico Vicinanza*, Musica Inaudita  DMI  University of Salerno
Vittorio Cafagna, Musica Inaudita  DMI  University of Salerno
(100120206) 
10:30 a.m.
Rubber Band Geometry: navigating within and between microtonal universes.
Stephen G. Soderberg*, Library of Congress
(100151355)

8:30 a.m.

Saturday October 23, 2004, 8:30 a.m.11:20 a.m.
Special Session on Hopf Algebras at the Crossroads of Algebra, Category Theory, and Topology, I
Room G 45, Donald P. Jacobs Center
Organizers:
Louis H. Kauffman, University of Illinois at Chicago kauffman@uic.edu
David E. Radford, University of Illinois at Chicago radford@uic.edu
Fernando J. O. Souza, University of Iowa fernandosouza@uiowa.edu

8:30 a.m.
Groups of grouplikes of a semisimple Hopf algebra and its dual.
Yevgenia Kashina*, DePaul University
(100116399) 
9:00 a.m.
Application of the FadeevReshetikhinTaxhtajan construction to produce new finitedimensional quasitriangular Hopf algebras which are not equivalent via cocycle twisting.
Jacob Towber*, Mathematics Department, De Paul Univrsity, Chicago, Illinois
(100108342) 
9:30 a.m.
Differential Algebra Structures on Families of Trees.
Robert L. Grossman, Uinv. of Illinois at Chicago
Richard G. Larson*, Univ. of Illinois at Chicago
(100116274) 
10:00 a.m.
A note on antiYetterDrinfeld modules.
Mihai D Staic*, SUNY at Buffalo
(100116222) 
10:30 a.m.
YetterDrinfeld modules, flatness, and Hopfcyclic cohomology.
Masoud Khalkhali*, Mathematics Department, University of Western Ontario, London ON, Canada
(100118237) 
11:00 a.m.
Some results on coFrobenius Hopf algebras.
Margaret Beattie*, Mount Allison University
(100116348)

8:30 a.m.

Saturday October 23, 2004, 8:30 a.m.11:20 a.m.
Special Session on Extremal Combinatorics, I
Room G 36, Donald P. Jacobs Center
Organizers:
Dhruv Mubayi, University of Illinois at Chicago mubayi@math.uic.edu
Yi Zhao, University of Illinois at Chicago zhao@math.uic.edu

8:30 a.m.
It's raining hyperedges: Online intersecting hypergraphs beyond the threshold.
Ryan Martin*, Iowa State University
Tom Bohman, Carnegie Mellon University
Alan Frieze, Carnegie Mellon University
Miklos Ruszinko, Computer and Automation Research Institute, Hungarian Academy of Sciences
Cliff Smyth, Carnegie Mellon University
(10010529) 
9:00 a.m.
The Ramsey number for hypergraph cycles I.
P Haxell*, University of Waterloo
T. Luczak, Adam Mickiewicz University
Y. Peng, Indiana State University
V. Rodl, Emory University
A. Rucinski, Adam Mickiewicz University
M. Simonovits, Renyi Institute of Mathematics
J. Skokan, Universidade de Sao Paulo
(100105323) 
9:30 a.m.
Ramsey number of hypergraph cycles II.
Jozef Skokan*, Universidade de Sao Paulo
(100105184) 
10:00 a.m.
Codegree Density of hypergraphs.
Dhruv Mubayi, University of Illinois at Chicago
Yi Zhao*, University of Illinois at Chicago
(100105192) 
10:30 a.m.
Extremal problems on packing of $d$degenerate graphs.
Bela Bollob\' as, University of Memphis
Alexandr Kostochka*, University of Illinois at UrbanaChampaign
Kittikorn Nakprasit, University of Illinois at UrbanaChampaign
(10010518) 
11:00 a.m.
Maximum $K_{r+1}$free graphs which are not $r$partite.
Mihyun Kang, Humbodlt University, Berlin
Oleg Pikhurko*, Carnegie Mellon University
(100105137)

8:30 a.m.

Saturday October 23, 2004, 8:30 a.m.11:20 a.m.
Special Session on Fluid Dynamics, Diffusion and Reaction, I
Room M 177, Technological Institute
Organizers:
Peter S. Constantin, University of Chicago const@cs.uchicago.edu
Leonid V. Ryzhik, University of Chicago ryzhik@math.uchicago.edu

8:30 a.m.
On ReactionConvection in Incompressible 3DFluid: a Homogenization Problem.
Mark Freidlin*, University of Maryland
(100135174) 
9:30 a.m.
Effects of heat loss and differential diffusion on the propagation of a premixed flame opposed to or assisted by a imposed flow.
Moshe Matalon*, Northwestern University
(100135175) 
10:30 a.m.
Homogenization in stationary ergodic media.
P. Souganidis*, University of Texas
(100135305)

8:30 a.m.

Saturday October 23, 2004, 8:30 a.m.11:20 a.m.
Special Session on Computability Theory and Applications, I
Room G 03, Donald P. Jacobs Center
Organizers:
Robert I. Soare, University of Chicago soare@math.uchicago.edu
Denis R. Hirschfeldt, University of Chicago drh@math.uchicago.edu

8:30 a.m.
Degrees of nontrivial selfembeddings of computable linear orderings.
Rodney G. Downey, Victoria University of Wellington
Carl Jockusch*, University of Illinois at UrbanaChampaign
Joseph S. Miller, Victoria University of Wellington
(10010344) 
9:00 a.m.
Computable structures of high rank.
W. Calvert, University of Notre Dame
S. S. Goncharov, Sobolev Institute/Novosibirsk State University
J. F. Knight*, University of Notre Dame
O. Kudinov, Sobolev Institute/Novosibirsk State University
A. S. Morozov, Sobolev Institute/Novosibirsk State University
V. Puzarenko, Sobolev Institute/Novosibirsk State University
(10010369) 
9:30 a.m.
Index sets of dense Boolean algebras.
Barbara F. Csima*, Cornell University
Antonio Montalban, Cornell University
Richard A. Shore, Cornell University
(100103170) 
10:00 a.m.
Ramsey Degrees.
Joseph R Mileti*, University of Chicago
(100103161) 
10:30 a.m.
Undecidability in the Enumeration Degrees.
Thomas F. Kent*, University of Wisconsin, Madison
(100103199) 
11:00 a.m.
Description and Comparison of Computable Structures.
Wesley Calvert*, University of Notre Dame
Valentina Harizanov, George Washington University
Julia F. Knight, University of Notre Dame
Sara Miller, University of Notre Dame
(10010382)

8:30 a.m.

Saturday October 23, 2004, 9:00 a.m.10:50 a.m.
Special Session on Differential Geometry, I
Room MG 28, Technological Institute
Organizers:
Anders Ingemar Linner, Northern Illinois University linner@math.northwestern.edu
Hongyou Wu, Northern Illinois University wu@math.niu.edu

9:00 a.m.
Skew loops and hyperboloids.
Bruce Solomon*, Indiana University
(100153313) 
9:30 a.m.
Magnetic systems with the same geodesics.
Keith Burns*, Northwestern University
Vladimir Matveev, Universitaet Freiburg
(100153338) 
10:00 a.m.
Closed, Knotted and Symmetric Solutions of the Vortex Filament Equation.
Thomas A. Ivey*, College of Charleston
Annalisa M. Calini, College of Charleston
(100153107) 
10:30 a.m.
Elastic energy and variable length.
Anders Linner*, Northern Illinois University/Northwestern
(100158418)

9:00 a.m.

Saturday October 23, 2004, 9:00 a.m.10:45 a.m.
Special Session on Spectral Problems of Differential Operators, I
Room M 128, Technological Institute
Organizers:
Qingkai Kong, Northern Illinois University kong@math.niu.edu
Hongyou Wu, Northern Illinois University wu@math.niu.edu
Anton Zettl, Northern Illinois University zettl@math.niu.edu

9:00 a.m.
SturmLiouville Problems: A Survey.
Anton Zettl*, Northern Illinois University
(100134244) 
10:00 a.m.
Comparison of eigenvalue problems due to Krein, Feller and Atkinson.
Hans W Volkmer*, University of WisconsinMilwaukee
(100147216)

9:00 a.m.

Saturday October 23, 2004, 9:00 a.m.11:20 a.m.
Special Session on Modern Schubert Calculus, I
Room G 44, Donald P. Jacobs Center
Organizers:
Ezra Miller, University of Minnesota ezra@math.umn.edu
Frank Sottile, Texas A&M University sottile@math.tamu.edu

9:00 a.m.
Monodromy and Galois groups of Schubert problems.
Ravi Vakil*, Stanford
(100114141) 
9:30 a.m.
Mondrian tableaux and LittlewoodRichardson rules.
Izzet Coskun*, M.I.T.
(100114106) 
10:00 a.m.
Gr\"obner geometry of Schubert and Grothendieck transition formulae.
Alexander Yong*, UC Berkeley
Allen Knutson, UC Berkeley
(100114256) 
10:30 a.m.
Kogan's and Buch's problems via transition.
Allen Knutson*, UC Berkeley
Alexander Yong, UC Berkeley
(100105344) 
11:00 a.m.
Horn's Problem, Honeycombs and Vinnikov Curves.
David E Speyer*, University of California, Berkeley
(100122425)

9:00 a.m.

Saturday October 23, 2004, 9:00 a.m.11:20 a.m.
Special Session on Representation Theory of Reductive Groups, I
Room LG 66, Technological Institute
Organizers:
Jeffrey D. Adler, University of Akron adler@uakron.edu
JuLee Kim, University of Illinois at Chicago julee@math.uic.edu

9:00 a.m.
Representations of $p$adic $GL_2(D)$.
A. Raghuram*, University of Iowa
(100122168) 
9:30 a.m.
The spherical unitary dual for split padic exceptional groups.
Dan M. Ciubotaru*, Massachusetts Institute of Technology
(100122301) 
10:00 a.m.
Tempered spectrum for special unitary groups.
David Goldberg*, Purdue University
(100122294) 
10:30 a.m.
Decomposition of Restrictions of Principal Series Representations of $p$adic $GL(3)$ to a Maximal Compact Subgroup.
Peter S. Campbell, University of Ottawa
Monica Nevins*, University of Ottawa
(100120289) 
11:00 a.m.
On the Steinberg representation of a $p$adic group.
Peter S Campbell*, University of Ottawa
(100120288)

9:00 a.m.

Saturday October 23, 2004, 9:00 a.m.11:20 a.m.
Special Session on LowDimensional Topology and Kleinian Groups, I
Room LG 76, Technological Institute
Organizers:
Ian Agol, University of Illinois at Chicago agol@math.uic.edu
John Holt, University of Illinois at Chicago jholt@math.uic.edu
Saul Schleimer, University of Illinois at Chicago saul@math.uic.edu

9:00 a.m.
Minimal Triangulations of Closed Orientable Reducible 3Manifolds.
Alexander Charles Barchechat*, Tulane University
(10015788) 
9:30 a.m.
Eigenvalue fields of arithmetic Kleinian groups.
Emily Hamilton*, Emory University
Alan W Reid, University of Texas at Austin
(100157363) 
10:00 a.m.
The density conjecture for manifolds with bounded geometry.
Kenneth Bromberg*, University of Utah
Juan Souto, Bonn
(100157405) 
10:30 a.m.
The mapping class group action on quasiFuchsian space.
Juan Souto, CNRS
Peter Storm*, Stanford University
(100153291) 
11:00 a.m.
Surface groups are frequently faithful.
Jason DeBlois, University of Texas at Austin
Richard P Kent*, University of Texas at Austin
(100157131)

9:00 a.m.

Saturday October 23, 2004, 9:00 a.m.11:25 a.m.
Special Session on Special Functions, Orthogonal Polynomials, and their Applications, I
Room L 158, Technological Institute
Organizers:
George Gasper, Northwestern University george@math.northwestern.edu
Ahmed I. Zayed, DePaul University azayed@math.depaul.edu

9:00 a.m.
Orthogonal polynomials and coefficients of modular forms.
Sharon Frechette, College of Holy Cross
Ken Ono*, University of Wisconsin at Madison
Matthew Papanikolas, Texas A&M University
(100111166) 
9:30 a.m.
A new formula for 9 squares and Humbert's class number formulas.
Stephen C. Milne*, The Ohio State University
(100111412) 
10:00 a.m.
Generalized Lambert series identities.
Song Heng Chan*, University of Illinois at UrbanaChampaign
(100111341) 
10:30 a.m.
The compact representation of a Leonard pair.
Paul M Terwilliger*, Math Department, University of WisconsinMadison
(100133227) 
11:00 a.m.
Orthogonal Polynomials in Two Discrete Variables Related to the Quantum Group $U_q(so(5))$.
Alexander Rozenblyum*, New York City College of Technology, CUNY
(10013343)

9:00 a.m.

Saturday October 23, 2004, 9:00 a.m.10:50 a.m.
Special Session on Codes and Applications, I
Room G 42, Donald P. Jacobs Center
Organizers:
William C. Huffman, Loyola University of Chicago wch@math.luc.edu
Vera S. Pless, University of Illinois at Chicago pless@math.uic.edu

9:00 a.m.
Explicit Goppa code construction on fibre products of Kummer Covers.
Hiren Maharaj*, Clemson University
(10011425) 
9:30 a.m.
Enumeration of ${\rm AGL}(\frac m3,\,{\Bbb F}_{p^3})$Invariant Extended Cyclic Codes.
Xiangdong Hou*, University of South Florida
(100105103) 
10:00 a.m.
Highly symmetric weight functions on matrix rings.
Jay A. Wood*, Western Michigan University
(100194373) 
10:30 a.m.
MacWilliams duality for cosets over rings.
Iwan Duursma*, Univ of Illinois at UrbanaChampaign
(100111404)

9:00 a.m.

Saturday October 23, 2004, 9:00 a.m.10:55 a.m.
Special Session on Nonlinear Partial Differential Equations and Applications, I
Room L R3, Technological Institute
Organizers:
GuiQiang Chen, Northwestern University gqchen@math.northwestern.edu
Mikhail Feldman, University of Wisconsin at Madison feldman@math.wisc.edu

9:00 a.m.
Shock and boudary layers for Boltzmann equation.
TaiPing Liu*, Stanford University
(100135203) 
9:30 a.m.
Uniqueness of weak solutions of the NavierStokes equations of multidimensional, compressible flow.
David Hoff*, Indiana University
(100135113) 
10:00 a.m.
Nonlinear hyperbolic surface waves.
John K Hunter*, Department of Mathematics, University of California at Davis
(100135400) 
10:30 a.m.
Twodimensional regular shock reflection for the pressure gradient system of conservation laws.
Yuxi Zheng*, Penn State University
(100135234)

9:00 a.m.

Saturday October 23, 2004, 9:30 a.m.11:20 a.m.
Special Session on Stability Issues in Fluid Dynamics, I
Room L R4, Technological Institute
Organizers:
Susan J. Friedlander, University of Illinois at Chicago susan@math.uic.edu
Roman Shvydkoy, University of Illinois at Chicago shvydkoy@math.uic.edu

9:30 a.m.
The effect of gravity modulation on the onset of filtrational convection.
Natalya Popova*, University of Illinois at Chicago
(100176326) 
10:00 a.m.
Generic hydrodynamic instability via contact homology.
Robert Ghrist*, University of Illinois, UrbanaChampaign, Mathematics
John Etnyre, Univeristy of Pennsylvania, Mathematics
(100137395) 
10:30 a.m.
Fractal patterns formed by growth of radial viscous fingers.
Harry L. Swinney*, University of Texas at Austin
O. Praud, University of Texas at Austin
E. Sharon, University of Texas at Austin
(100176293) 
11:00 a.m.
Faraday wave pattern selection via multifrequency forcing.
Mary Silber*, Applied Mathematics Dept., Northwestern University
Jeff Porter, Dept. of Applied Mathematics, University of Leeds
Chad M. Topaz, Dept. of Mathematics, UCLA
(100176245)

9:30 a.m.

Saturday October 23, 2004, 9:30 a.m.11:20 a.m.
Special Session on Applications of Motives, I
Room L 211, Technological Institute
Organizers:
Eric M. Friedlander, Northwestern University eric@math.northwestern.edu
Alexander Goncharov, Brown University sasha@math.brown.edu
Mikhail Kapranov, Yale University mikhail.kapranov@yale.edu
Yuri Manin, Max Planck Institute for Mathematics manin@mpimbonn.mpg.de

9:30 a.m.
On some parity questions about pure and mixed motives.
Yves Andre*, Ecole Normale Superieure
(100114159) 
10:30 a.m.
Motivic decomposition of projective homogeneous varieties and the method of BialynickiBirula.
Patrick Brosnan*, UCLA
(100114123)

9:30 a.m.

Saturday October 23, 2004, 9:30 a.m.11:15 a.m.
Special Session on Index Theory, Morse Theory, and the Witten Deformation Method, I
Room L 221, Technological Institute
Organizers:
Igor Prokhorenkov, Texas Christian University i.prokhorenkov@tcu.edu
Ken Richardson, Texas Christian University k.richardson@tcu.edu

9:30 a.m.
KirwanNovikov inequalities on a manifold with boundary.
Maxim Braverman*, Northeastern University
(100158345) 
10:30 a.m.
Topology of Quasiperiodic Functions on the Plane.
Sergey P Novikov*, IPST and Math Department, University of Maryland, College Park
(100137381)

9:30 a.m.

Saturday October 23, 2004, 9:30 a.m.11:00 a.m.
Special Presentation, Part I
TA Development using case studies: A workshop for faculty
Room L 170, Technological Institute
Organizers:
Diane Herrmann, University of Chicago 
Saturday October 23, 2004, 10:00 a.m.10:50 a.m.
Special Session on Algebraic Topology: Interactions with Representation Theory and Algebraic Geometry, I
Room LG 68, Technological Institute
Organizers:
Paul G. Goerss, Northwestern University pgoerss@math.northwestern.edu
Jesper Kragh Grodal, University of Chicago jg@math.uchicago.edu
Brooke E. Shipley, University of Illinois at Chicago bshipley@math.uic.edu

10:00 a.m.
DyerLashof algebras for Morava Etheory.
Charles W Rezk*, Assistant Professor/University of Illinois at UrbanaChampaign
(100155306) 
10:30 a.m.
On Jacobians of complex curves with boundary.
T. Fiore, University of Michigan
I. Kriz*, University of Michigan
(100155351)

10:00 a.m.

Saturday October 23, 2004, 10:00 a.m.10:50 a.m.
Special Session on Geometric Aspects of the Langlands Program, I
Room L 251, Technological Institute
Organizers:
Edward Frenkel, University of California Berkeley frenkel@math.berkeley.edu
Dennis Gaitsgory, University of Chicago gaitsgde@math.uchicago.edu
Mark Goresky, Institute for Advanced Study goresky@ias.edu
Kari Vilonen, Northwestern University vilonen@math.northwestern.edu

10:00 a.m.
Introduction to the Geometric Langlands Correspondence.
Edward Frenkel*, University of California, Berkeley
(100114254)

10:00 a.m.

Saturday October 23, 2004, 11:40 a.m.12:30 p.m.
Invited Address
Fractional dimensions in geometry and algebra.
Auditorium, Technological Institute
Yuri Manin*, Northwestern University 
Saturday October 23, 2004, 1:00 p.m.2:00 p.m.
Special Presentation, Part II
TA Development using case studies: A workshop for faculty
Room L 170, Technological Institute
Organizers:
Diane Herrmann, University of Chicago 
Saturday October 23, 2004, 2:00 p.m.2:50 p.m.
Invited Address
The geometry and topology of reconfiguration.
Auditorium, Technological Institute
Robert Ghrist*, University of Illinois, UrbanaChampaign, Mathematics
(100168396) 
Saturday October 23, 2004, 3:00 p.m.5:50 p.m.
Special Session on Differential Geometry, II
Room MG 28, Technological Institute
Organizers:
Anders Ingemar Linner, Northern Illinois University linner@math.northwestern.edu
Hongyou Wu, Northern Illinois University wu@math.niu.edu

3:00 p.m.
Positive harmonic function on open manifolds with nonpositive curvature.
Jianguo Cao*, University of Notre Dame,
Huijun Fan, Peking University
Francois Leddreppier, Univeristy of Notre Dame
(100158220) 
3:30 p.m.
KSurfaces (smooth and discrete) of nonfinite type.
Ivan Charles Sterling*, St Mary's College of Maryland
(100153265) 
4:00 p.m.
Soliton surfaces in the mechanical equilibrium of closed membranes.
Brian Smyth*, University of Notre Dame
(100153271) 
4:30 p.m.
Spectral properties of the FourierMukai transform.
James F. Glazebrook*, Eastern Illinois University and University of Illinois at UrbanaChampaign
Marcos Jardim, IMECCUNICAMP, Campinas, Brazil
Franz W. Kamber, University of Illinois at UrbanaChampaign
(10015815) 
5:00 p.m.
Dupin hypersurfaces with four principal curvatures.
Thomas E Cecil, College of the Holy Cross
QuoShin Chi, Washington University
Gary R Jensen*, Washington University
(100153238)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:50 p.m.
Special Session on Stability Issues in Fluid Dynamics, II
Room L R4, Technological Institute
Organizers:
Susan J. Friedlander, University of Illinois at Chicago susan@math.uic.edu
Roman Shvydkoy, University of Illinois at Chicago shvydkoy@math.uic.edu

3:00 p.m.
Regularity of Variational Weak Solutions of the Euler Equations.
Alexander Shnirelman*, Concordia University, Montreal
(100135424) 
3:30 p.m.
Are viscoelastic flows under control or out of control?
Michael Renardy*, Virginia Tech
(10017610) 
4:00 p.m.
The Tiger fountain problem.
Carmen Chicone*, University of MissouriColumbia
(100176139) 
4:30 p.m.
Break 
5:00 p.m.
Viscous and Viscoelastic Potential Flow.
Daniel D. Joseph*, University of Minnesota
(100135242) 
5:30 p.m.
PROST: a Parabolic Reconstruction Of Surface Tension for the volumeoffluid method.
Yuriko Renardy*, Department of Mathematics, Virginia Tech
(10017617)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:50 p.m.
Special Session on Iterated Function Systems and Analysis on Fractals, II
Room L 160, Technological Institute
Organizers:
KaSing Lau, Chinese University of Hong Kong kslau@math.cuhk.edu.hk
Stephen S.T. Yau, University of Illinois at Chicago yau@uic.edu

3:00 p.m.
Some good news about those gaps in the spectrum of the Laplacian on certain fractals.
Robert S. Strichartz*, Math Dept, Cornell Univ,
(10012842) 
3:30 p.m.
Selfsimilar Dirichlet forms on p.c.f. fractals.
B. M. Hambly, University of Oxford
V. Metz, Bielefeld University
A. Teplyaev*, University of Connecticut
(100146410) 
4:00 p.m.
Local structures and differentiation on fractals.
Martina C. Zähle*, Mathematical Institute, University of Jena, Germany
(10012878) 
4:30 p.m.
Measurable Riemannian geometry on a selfsimilar set, energy measue and heat kernel estimate.
Jun Kigami*, Graduate School of Informatics, Kyoto University
(10013147) 
5:00 p.m.
Quasisymmetric and quasiconformal equivalence of postcritically finite selfsimilar sets.
Jeremy T. Tyson*, University of Illinois
JangMei G. Wu, University of Illinois
(100130142) 
5:30 p.m.
Entropy spectrum of Banach valued Birkhoff ergodic average.
Aihua Fan*, Picardie University
(100137150)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:50 p.m.
Special Session on Algebraic Topology: Interactions with Representation Theory and Algebraic Geometry, II
Room LG 68, Technological Institute
Organizers:
Paul G. Goerss, Northwestern University pgoerss@math.northwestern.edu
Jesper Kragh Grodal, University of Chicago jg@math.uchicago.edu
Brooke E. Shipley, University of Illinois at Chicago bshipley@math.uic.edu

3:00 p.m.
On conformal field theories and dessins d'enfants.
Po Hu*, Wayne State University
(100155367) 
3:30 p.m.
Orbifolds and Stable Equivariant Homotopy Groups.
Johann K Leida*, Univ. of WisconsinMadison
(100155179) 
4:00 p.m.
Complete Segal spaces as models for simplicial categories.
Julie Bergner*, University of Notre Dame
(10015599) 
4:30 p.m.
The $p$adic $K$theory of the BousfieldKuhn Functor.
Kristen Joy Schemmerhorn*, Albion College
(100155231) 
5:00 p.m.
A localization sequence for $K(ku)$.
Andrew J. Blumberg*, University of Chicago
(100119337) 
5:30 p.m.
Computations for Toroidal Orbifolds.
A Adem*, University of Wisconsin
J Pan, Academia Sinica
(100120133)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:50 p.m.
Special Session on Nonlinear Waves, II
Room L R2, Technological Institute
Organizers:
Jerry L. Bona, University of Illinois at Chicago bona@math.uic.edu
Shuming Sun, Virginia Polytechnic Institute and State University sun@math.vt.edu
Bingyu Zhang, University of Cincinnati bzhang@math.uc.edu

3:00 p.m.
Special solutions of a Boussinesq system.
Min Chen*, Purdue University
(100176280) 
3:30 p.m.
The Existence of Three Dimensional Localized Waves.
ShuMing Sun*, Virginia Tech
Mark Groves, Loughborough University, UK
(100176278) 
4:00 p.m.
Control of the surface of water by a wavemaker.
Lionel Rosier*, Institut Elie Cartan de Nancy
(100176190) 
4:30 p.m.
On the variational characterization of KdV multisolitons.
John P. Albert*, University of Oklahoma
Jerry L. Bona, University of Illinois at Chicago
Nghiem V. Nguyen, University of Oklahoma
(100135279) 
5:00 p.m.
Decay of Solutions for Some Nonlinear Partial Differential Equations.
Jerry Bona, University of Illinois at Chicago, USA
Thanasis Fokas, University of Cambridge, UK
Laihan Luo*, Richard Stockton College of New Jersey, USA
(100135261) 
5:30 p.m.
Generalized Poincar\'eHopf bifurcation and galloping instability of traveling waves.
Benjamin Texier*, Indiana University
Kevin Zumbrun, Indiana University
(100135308)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:45 p.m.
Special Session on Mathematical Problems in Robotics, II
Room A 110, Technological Institute
Organizers:
Robert W. Ghrist, University of Illinois at UrbanaChampaign ghrist@math.uiuc.edu

3:00 p.m.
Topology in Motion Planning.
Howie Choset*, Carnegie Mellon
Alfred A Rizzi, Carnegie Mellon
(10015451) 
3:30 p.m.
MinimumSwitch Motion Planning with a Discrete Set of Vector Fields.
Kevin M Lynch*, Northwestern University
(100193196) 
4:00 p.m.
Pursuitevasion in complex environments: from graphs to polygons.
Volkan Isler*, University of Pennsylvania
(100105100) 
4:30 p.m.
New results in topological robotics.
S Yuzvinsky*, University of Oregon
(100155182) 
5:00 p.m.
Control of Shape and Distribution for Swarming Behaviors.
Luiz Chaimowicz, GRASP Lab.  University of Pennsylvania
Vijay Kumar*, GRASP Lab.  University of Pennsylvania
(100193253)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.6:20 p.m.
Special Session on Spectral Problems of Differential Operators, II
Room M 128, Technological Institute
Organizers:
Qingkai Kong, Northern Illinois University kong@math.niu.edu
Hongyou Wu, Northern Illinois University wu@math.niu.edu
Anton Zettl, Northern Illinois University zettl@math.niu.edu

3:00 p.m.
Continuous Families of Complete, Negatively Curved Metrics with the Same Scattering Data.
Peter A. Perry*, University of Kentucky
Dorothee Schueth, HumboldtUniversität zu Berlin
(100135349) 
4:00 p.m.
On the spectrum of the Euler equations.
Susan Friedlander*, University of IllinoisChicago
(10017687) 
5:00 p.m.
Detour torsion.
Thomas Branson*, University of Iowa
A. Rod Gover, University of Auckland
(100153300) 
6:00 p.m.
Asymptotic expansions of the eigenvalues of anharmonic oscillators.
Kwang C. Shin*, University of MissouriColumbia
(100134393)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.4:50 p.m.
Special Session on Geometric Aspects of the Langlands Program, II
Room L 251, Technological Institute
Organizers:
Edward Frenkel, University of California Berkeley frenkel@math.berkeley.edu
Dennis Gaitsgory, University of Chicago gaitsgde@math.uchicago.edu
Mark Goresky, Institute for Advanced Study goresky@ias.edu
Kari Vilonen, Northwestern University vilonen@math.northwestern.edu

3:00 p.m.
On de Jong's conjecture.
Dennis Gaitsgory*, The University of Chicago
(100111268) 
4:00 p.m.
Real groups and the geometric Langlands program.
David Nadler*, University of Chicago
(100114296)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:50 p.m.
Special Session on Applications of Motives, II
Room L 211, Technological Institute
Organizers:
Eric M. Friedlander, Northwestern University eric@math.northwestern.edu
Alexander Goncharov, Brown University sasha@math.brown.edu
Mikhail Kapranov, Yale University mikhail.kapranov@yale.edu
Yuri Manin, Max Planck Institute for Mathematics manin@mpimbonn.mpg.de

3:00 p.m.
Motivic fundamental groups and Feynman integrals.
Alexander Goncharov*, Brown University
(100114124) 
5:00 p.m.
Floer homology of indschemes.
Mikhail Kapranov*, Yale University
(100114127)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:50 p.m.
Special Session on Algebraic Representations and Deformations, II
Room LG 52, Technological Institute
Organizers:
Stephen R. Doty, Loyola University of Chicago doty@math.luc.edu
Anthony Giaquinto, Loyola University of Chicago tonyg@math.luc.edu

3:00 p.m.
Results on the peak algebra of the symmetric group algebra.
Kathryn Nyman*, Loyola University Chicago
Marcelo Aguiar, Texas A \& M University
Rosa Orellana, Dartmouth College
(100105434) 
3:30 p.m.
Extensions, Levi subgroups, and Lusztig conjectures.
Leonard Scott*, The University of Virginia
(100120266) 
4:00 p.m.
Representation type of Schur superalgebras.
David J Hemmer*, University of Toledo
Jonathan Kujawa, University of Georgia
Daniel Nakano, University of Georgia
(100120210) 
4:30 p.m.
On the "q to q" phenomenon.
Bhama Srinivasan*, University of Illinois at Chicago
(100120382) 
5:00 p.m.
Quantized hyperalgebras of rank one.
William Chin*, DePaul University
Leonid Krop, DePaul University
(100116263) 
5:30 p.m.
Quantum and QuasiPl\"ucker Coordinates.
Aaron Lauve*, Rutgers UniversityNew Brunswick
(10011624)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:20 p.m.
Special Session on Modern Schubert Calculus, II
Room G 44, Donald P. Jacobs Center
Organizers:
Ezra Miller, University of Minnesota ezra@math.umn.edu
Frank Sottile, Texas A&M University sottile@math.tamu.edu

3:00 p.m.
Experimentation in real Schubert calculus for flag manifolds.
James Ruffo, TAMU
Yuval Sivan, University of Massachusetts, Amherst
Evgenia Soprunova*, University of Massachusetts, Amherst
Frank Sottile, TAMU
(100114273) 
3:30 p.m.
Applying Pieri Homotopies to compute dynamic output feedback laws.
Yusong Wang*, University of Illinois at Chicago
Jan Verschelde, University of Illinois at Chicago
(100112194) 
4:00 p.m.
Lower bounds in some problems of real Schubert calculus.
Alexandre Eremenko, Purdue University
Andrei Gabrielov*, Purdue University
(10011465) 
4:30 p.m.
Tranversality of nongeneral Schubert cycles.
Brian Osserman*, University of California, Berkeley
(100114223) 
5:00 p.m.
Quantum cohomology of isotropic Grassmannians.
Harry Tamvakis*, Brandeis University
(100114230)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:20 p.m.
Special Session on Representation Theory of Reductive Groups, II
Room LG 66, Technological Institute
Organizers:
Jeffrey D. Adler, University of Akron adler@uakron.edu
JuLee Kim, University of Illinois at Chicago julee@math.uic.edu

3:00 p.m.
Equivalence of Data Parametrizing Tame Supercuspidal Representations.
Jeffrey L Hakim*, American University
(100122282) 
3:30 p.m.
Distinguished supercuspidal representations.
Jeffrey Hakim, American University
Fiona Murnaghan*, University of Toronto
(100122155) 
4:00 p.m.
Uniqueness of minimal representation.
Gordan Savin*, University of Utah
(100122130) 
4:30 p.m.
Distinguished, but not even.
Stephen DeBacker*, University of Michigan
(100122406) 
5:00 p.m.
On the Theta Correspondences for U(1) and the Quasisplit U(2).
Ryan Stuffelbeam*, Boston College
(100122249)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:50 p.m.
Special Session on LowDimensional Topology and Kleinian Groups, II
Room LG 76, Technological Institute
Organizers:
Ian Agol, University of Illinois at Chicago agol@math.uic.edu
John Holt, University of Illinois at Chicago jholt@math.uic.edu
Saul Schleimer, University of Illinois at Chicago saul@math.uic.edu

3:00 p.m.
Noncyclic covers of knot complements.
Nathan Darrell Broaddus*, Cornell University
(10015755) 
3:30 p.m.
Quasiconformal homogeneity of hyperbolic manifolds.
Dick Canary*, University of Michigan
(100100433) 
4:00 p.m.
Cusp Shapes of Hyperbolic Link Complements.
Jessica S Purcell*, University of Texas at Austin
(100157275) 
4:30 p.m.
Group Actions and Codimension One Foliations.
Sergio Fenley, Florida State University
Rachel Roberts*, Washington University
(100157415) 
5:00 p.m.
Closed Essential Surfaces in the Complements of Large Volume Berge Knots.
Ken Baker*, The University of Georgia at Athens
(100157379) 
5:30 p.m.
Cohomology constructions for hyperbolic knot and link complements.
Anneke Bart, Saint Louis University
Kevin P. Scannell*, Saint Louis University
(100157365)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:25 p.m.
Special Session on Special Functions, Orthogonal Polynomials, and their Applications, II
Room L 158, Technological Institute
Organizers:
George Gasper, Northwestern University george@math.northwestern.edu
Ahmed I. Zayed, DePaul University azayed@math.depaul.edu

3:00 p.m.
Ramanujan Continued Fractions and Orthogonal Polynomials.
Mourad E H Ismail*, University of Central Florida, Orlando, FL 33218
Dennis Stanton, School of Mathematics, University of Minnesota
(100133315) 
3:30 p.m.
A conditionally convergent double series of ordinary Bessel functions in Ramanujan's lost notebook.
Bruce C. Berndt*, University of Illinois at UrbanaChampaign
(100133241) 
4:00 p.m.
On Generalizations of Certain WellKnown $q$series Identities Associated to Root Systems.
Hasan Coskun*, Texas A&M UniversityCommerce
(100133163) 
4:30 p.m.
Poisson Kernel for the associated continuos q Jacobi Polynomials.
Mizan Rahman, Carleton University
Tariq M Qazi*, Virginia State University
(100133151) 
5:00 p.m.
Summation, transformation, and expansion formulas for elliptic, modular, and theta hypergeometric series.
George Gasper*, Northwestern University
(10013330)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:40 p.m.
Special Session on Mathematical Techniques in Musical Analysis, II
Auditorium, Technological Institute
Organizers:
Judith Baxter, University of Illinois at Chicago baxter@uic.edu
Richard Cohn, University of Chicago rcohn@uchicago.edu
Robert Peck, Louisiana State University rpeck@lsu.edu

3:00 p.m.
Wreath Products, nCubes, and Musical VoiceLeading.
Jack M Douthett*, TVI Commubity College
Richard Hermann, University of New Mexico
(100120212) 
4:00 p.m.
The Algebra of Minimal Voice Leading among Triads of All Species.
Ian Quinn*, Department of Music, Yale University
(100100409) 
5:00 p.m.
Minimal Voiceleading.
Dmitri Tymoczko*, Princeton University
(100105156)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:50 p.m.
Special Session on Hopf Algebras at the Crossroads of Algebra, Category Theory, and Topology, II
Room G 45, Donald P. Jacobs Center
Organizers:
Louis H. Kauffman, University of Illinois at Chicago kauffman@uic.edu
David E. Radford, University of Illinois at Chicago radford@uic.edu
Fernando J. O. Souza, University of Iowa fernandosouza@uiowa.edu

3:00 p.m.
Parametrization of simple modules for the Quantum double of FrobeniusLusztig kernels.
Leonid Krop*, Department of Mathematical Sciences, DePaul University
David E Radford, Department of Mathematics, Statistics and Computer Science, University of Illinois at Chicago
(100116148) 
3:30 p.m.
A Left Quantum Group.
Suemi RodriguezRomo, Universidad Nacional Autonoma de Mexico
Earl J. Taft*, Rutgers University
(10011656) 
4:00 p.m.
A New Lie Bialgebra Structure on $sl(2,1)$.
Gizem Karaali*, University of California, Santa Barbara
(100117285) 
4:30 p.m.
Representations of the Hopf algbera U(n).
Mitsuhiro Takeuchi*, University of Tsukuba, Institute of Mathematics
(100116188) 
5:00 p.m.
Hopfalgebraic approach to super affine groups and super formal groups.
Akira Masuoka*, University of Tsukuba, Institute of Mathematics
(100116187) 
5:30 p.m.
Representations of quantum groups: constructions and characters from a Hopf algebraic point of view.
Marc Rosso*, Departement de Mathematiques et Applications, Ecole Normale Superieure, Paris, France
(100120353)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:20 p.m.
Special Session on Extremal Combinatorics, II
Room G 36, Donald P. Jacobs Center
Organizers:
Dhruv Mubayi, University of Illinois at Chicago mubayi@math.uic.edu
Yi Zhao, University of Illinois at Chicago zhao@math.uic.edu

3:00 p.m.
Incidence matrices and a zerosum Ramseytype problem.
Richard M Wilson*, Department of Mathematics, California Institute of Technology
(100105343) 
3:30 p.m.
Extremal Problems for Linear Dependences.
Jacques A Verstraete*, University of Waterloo
(100105181) 
4:00 p.m.
Listening for Perfect Matchings in Bipartite Graphs.
Andre E Kezdy*, University of Louisville
(100105140) 
4:30 p.m.
Creating a giant component.
Tom Bohman*, Carnegie Mellon University
David Kravitz, Carnegie Mellon University
(100105394) 
5:00 p.m.
Large graphs with bounded degree and no long induced path.
Myung S Chung, National Institutes of Health
Tao Jiang, Miami University of Ohio
Douglas B West*, University of Illinois
(100105177)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:45 p.m.
Special Session on Index Theory, Morse Theory, and the Witten Deformation Method, II
Room L 221, Technological Institute
Organizers:
Igor Prokhorenkov, Texas Christian University i.prokhorenkov@tcu.edu
Ken Richardson, Texas Christian University k.richardson@tcu.edu

3:00 p.m.
Morse inequalities for orbit spaces.
Jes\'us A. \'Alvarez L\'opez*, Universidade de Santiago de Compostela
Manuel Calaza Cabanas, Universidade de Santiago de Compostela
(100158209) 
4:00 p.m.
Laplace Transforms, Dynamics and Spectral Geometry.
Dan Burghelea*, OSU, Columbus, OH
Stefan Haller, Depatment of mathematics, University of Vienna
(100158189) 
5:00 p.m.
The geometric complex of a MorseBottSmale pair and an extension of a theorem by BismutZhang.
Dan Burghelea, The Ohio State University
Stefan Haller*, University of Vienna
(100157111)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:50 p.m.
Special Session on Fluid Dynamics, Diffusion and Reaction, II
Room M 177, Technological Institute
Organizers:
Peter S. Constantin, University of Chicago const@cs.uchicago.edu
Leonid V. Ryzhik, University of Chicago ryzhik@math.uchicago.edu

3:00 p.m.
Symmetry and related properties of positive solutions of parabolic equations on $R^N$.
Peter Polacik*, School of Mathematics, University of Minnesota
(100135144) 
4:00 p.m.
Bulk diffusion for interacting random walks in random media.
Jeremy Quastel*, University of Toronto
(100135176) 
5:00 p.m.
Jacobian estimates for GinzburgLandau functionals, and applications.
Robert Jerrard*, University of Toronto
(100135311)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:50 p.m.
Special Session on Codes and Applications, II
Room G 42, Donald P. Jacobs Center
Organizers:
William C. Huffman, Loyola University of Chicago wch@math.luc.edu
Vera S. Pless, University of Illinois at Chicago pless@math.uic.edu

3:00 p.m.
Parametrization of SelfDual Binary Codes.
Gerald J. Janusz*, University of Illinois at UrbanaChampaign
(10019432) 
3:30 p.m.
On the Order of the Automorphism Group of a Putative Extremal Code Vassil Yorgov.
Vassil Yorgov*, Fayetteville State University
(10019460) 
4:00 p.m.
Formally selfdual even codes of length divisible by 8.
JonLark Kim*, University of Nebraska  Lincoln
Vera Pless, University of IllinoisChicago
(100194251) 
4:30 p.m.
On the double circulant presentation of the binary extended quadratic residue code.
Mona Musa*, Southern Illinois University at Edwardsville
(100194335) 
5:00 p.m.
Negacyclic Duadic Codes.
Tom Blackford*, Western Illinois University
(10010527) 
5:30 p.m.
Focused aperiodic correlation and binary phase shaping.
Jonathan I. Hall*, Department of Mathematics, Michigan State University
(100194191)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:55 p.m.
Special Session on Nonlinear Partial Differential Equations and Applications, II
Room L R3, Technological Institute
Organizers:
GuiQiang Chen, Northwestern University gqchen@math.northwestern.edu
Mikhail Feldman, University of Wisconsin at Madison feldman@math.wisc.edu

3:00 p.m.
Bifurcation and Stability for GinzburgLandau Model of Superconductivity.
Tian Ma, Indiana University and Sichuan University
Shouhong Wang*, Indiana University
(100135407) 
3:30 p.m.
Global Solvabilty for a Nonlinear Maxwell's Equation in Quasistationary Electromagnetic Fields.
HongMing Yin*, Washington State University
Wei Wei, Guizhou University
(100135211) 
4:00 p.m.
Free boundary problems for quasilinear degenerate equations.
Eun Heui Kim*, California State University Long Beach
(100135372) 
4:30 p.m.
On the pointwise jump condition of the free boundary in the 1phase Stefan problem.
Donatella Danielli*, Purdue University
Marianne Korten, Kansas State University
(100135385) 
5:00 p.m.
Obstacle problem in Carnot groups of step 2.
Arshak Petrosyan*, Purdue University
(100135267) 
5:30 p.m.
A Poincare inequality on $R^{n}$ and its application to potential fluid flows.
Guozhen Lu, Wayne State University
Biao Ou*, University of Toledo
(10013541)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:55 p.m.
Special Session on Geometric Partial Differential Equations, I
Room L R5, Technological Institute
Organizers:
GuiQiang Chen, Northwestern University gqchen@math.northwestern.edu
Jared Wunsch, Northwestern University jwunsch@math.northwestern.edu

3:00 p.m.
Geometric optics and the wave equation on manifolds with corners.
Andras Vasy*, Northwestern University/ MIT
(10015848) 
3:30 p.m.
The normal trace of vector fields with weak divergences.
William P. Ziemer*, Indiana University
(100176120) 
4:00 p.m.
Local pointwise and Harnack estimates for solutions of the $\sigma_k$ curvature equation.
ZhengChao Han*, Rutgers University, Piscataway, NJ
(100135200) 
4:30 p.m.
Solutions of Tricomi Equations.
Qing Han*, Department of Mathmetics, University of Notre Dame
(10013585) 
5:00 p.m.
Sharp local embedding inequalities.
Junfang Li, University of Oklahoma
Meijun Zhu*, University of Oklahoma
(10013583) 
5:30 p.m.
Motion of Surfaces by Curvature.
Gieri Simonett*, Vanderbilt University
(100135225)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:50 p.m.
Special Session on Computability Theory and Applications, II
Room G 03, Donald P. Jacobs Center
Organizers:
Robert I. Soare, University of Chicago soare@math.uchicago.edu
Denis R. Hirschfeldt, University of Chicago drh@math.uchicago.edu

3:00 p.m.
On Downey's Conjecture.
Marat M. Arslanov, Kazan State University
Iskander Sh. Kalimullin, Kazan State University
Steffen Lempp*, University of WisconsinMadison
(100103132) 
3:30 p.m.
The initial segment complexity of random reals.
Joseph S. Miller*, Indiana University Bloomington
Liang Yu, Victoria University of Wellington
(100103183) 
4:00 p.m.
Degree Spectra of Homogeneous Models.
Karen M. Lange*, University of Chicago
(100103180) 
4:30 p.m.
Computability Theory and Logic Programming.
Douglas Cenzer*, University of Florida
Jeffrey Remmel, University of California at San Diego
(100103138) 
5:00 p.m.
Degrees of Saturated Models.
Kenneth A. Harris*, University of Chicago
Denis R. Hirschfeldt, University of Chicago
Robert I. Soare, University of Chicago
(100103205) 
5:30 p.m.
Effectively and Relatively Effectively Categorical Structures.
Valentina Harizanov*, George Washington University
(100103162)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:50 p.m.
Special Session on Solving Polynomial Systems, II
Room G 43, Donald P. Jacobs Center
Organizers:
Anton Leykin, University of Illinois at Chicago leykin@math.uic.edu
Jan Verschelde, University of Illinois at Chicago jan@math.uic.edu

3:00 p.m.
Soprunova Room G 44 
3:30 p.m.
Wang Room G 44 
4:00 p.m.
Break 
4:30 p.m.
An Algebraic Method for Analyzing Dynamic Systems.
Wenqin Zhou*, Applied Mathmatics Department, Unversity of Western Ontario, London, Ontario
Greg Reid, University of Western Ontario
David Jeffrey, University of Western Ontario
(10013495) 
5:00 p.m.
On Polynomial Gcds over Direct Products of Fields Given by Towers of Simple Extensions.
Marc Moreno Maza*, University of Western Ontario
Boulier, University of Lille 1 (France)
Oancea, University of Western Ontario
(100112401) 
5:30 p.m.
An Exact Toric ResultantBased RUR Approach for Solving Polynomial Systems.
Koji Ouchi*, Department of Computer Science, Texas A&M University
John Keyser, Department of Computer Science, Texas A&M University
(100168204)

3:00 p.m.

Saturday October 23, 2004, 3:00 p.m.5:10 p.m.
Session for Contributed Papers
Room L 168, Technological Institute

3:00 p.m.
Classification of simply connected 4dim Einstein Lie groups.
Thomas Edward Poole*, La Trobe University Australia
(10015368) 
3:15 p.m.
Intrinsically Linked Graphs with Knotted Components.
Thomas Fleming*, University of California, San Diego
(10015731) 
3:30 p.m.
Explicit Evaluations of a Class of Double Lvalues.
David A. Terhune*, Pennsylvania State University
(10011120) 
3:45 p.m.
Relative Randomness and Real Closed Fields.
Alexander Raichev*, University of WisconsinMadison
(10010306) 
4:00 p.m.
Inductive logic of the genetic code.
Dennis F. Cudia*, none
(10019279) 
4:15 p.m.
Open Formulas of RungeKutta Method.
Maitree Podisuk*, Faculty of Science KMITL Ladkrabang Bangkok 10520 Thailand
(100165149) 
4:30 p.m.
Properties of the von NeumannKakutani adding machine transformation.
Dmitriy V Akimov*, North Dakota State University
(100137332) 
4:45 p.m.
Constraint Preserving Boundary Conditions for a Hyperbolic Formulation of Einstein's Equations.
Nicolae Tarfulea*, University of Minnesota  Purdue University Calumet
(10013533) 
5:00 p.m.
2D QuasiGeostrophic Equations.
Ning Ju*, Oklahoma State University
(10013537)

3:00 p.m.

Saturday October 23, 2004, 6:00 p.m.7:00 p.m.
Reception Hosted by the Department of Mathematics
Louis Room, Norris Center, 1999 Campus Drive
Sunday October 24, 2004

Sunday October 24, 2004, 7:30 a.m.12:00 p.m.
Meeting Registration
Lobby, Technological Institute 
Sunday October 24, 2004, 7:30 a.m.12:00 p.m.
Exhibit and Book Sale
Room L 150, Technological Institute 
Sunday October 24, 2004, 8:00 a.m.10:50 a.m.
Special Session on Algebraic Topology: Interactions with Representation Theory and Algebraic Geometry, III
Room LG 68, Technological Institute
Organizers:
Paul G. Goerss, Northwestern University pgoerss@math.northwestern.edu
Jesper Kragh Grodal, University of Chicago jg@math.uchicago.edu
Brooke E. Shipley, University of Illinois at Chicago bshipley@math.uic.edu

8:00 a.m.
Some connected covers of the specturm tmf(3).
Mark Mahowald*, Northwestern University
Charles Rezk, University of Illinois
(100155325) 
8:30 a.m.
Algebraic $K$theory and sumsofsquares formulas.
Daniel C Isaksen*, Wayne State University
Daniel Dugger, University of Oregon
(100155171) 
9:00 a.m.
Break. 
9:30 a.m.
Free $p$group actions on products of spheres.
\"{O}zg\"{u}n \"{U}nl\"{u}*, McMaster University
(100157310) 
10:00 a.m.
DyerLashof operations in the string topology of spheres and projective spaces.
Craig Westerland*, Institute for Advanced Study
(10015564) 
10:30 a.m.
Representation and character theory in 2categories.
Nora Ganter*, UIUC
Mikhail Kapranov, Yale
(100155322)

8:00 a.m.

Sunday October 24, 2004, 8:00 a.m.11:20 a.m.
Special Session on Solving Polynomial Systems, III
Room G 43, Donald P. Jacobs Center
Organizers:
Anton Leykin, University of Illinois at Chicago leykin@math.uic.edu
Jan Verschelde, University of Illinois at Chicago jan@math.uic.edu

8:00 a.m.
The maximum likelihood degree and the likelihood equations.
Fabrizio Catanese, Universitaet Bayreuth
Serkan Hosten*, San Francisco State University, Mathematics Department
Amit Khetan, University of Massachusetts, Amherst
Bernd Sturmfels, University of California, Berkeley
(100114164) 
8:30 a.m.
Reconstructing dynamical systems from their zeta functions.
Christopher J Hillar*, U.C. Berkeley
(100112121) 
9:00 a.m.
Resultants of Sparse Polynomials and Toric Vanishing Theorems.
Amit Khetan*, University of Massachusetts Amherst
(10011457) 
9:30 a.m.
On Smale's 6th Problem: A solution in the fourbody case.
Marshall E Hampton*, University of Minnesota
Richard Moeckel, University of Minnesota
(100137119) 
10:00 a.m.
Cellular Exclusion Algorithms for Polynomial Systems.
Eugene L. Allgower*, Colorado State University
Kurt Georg, deceased
(100165195) 
10:30 a.m.
Solving the Polynomial Equations of the Geometric Design Problem of the Spatial 3R Mechanisms.
Eric C Lee*, Northeastern University
Constantinos Mavroidis, Northeastern University
(100114421) 
11:00 a.m.
Using Polynomial Homotopy Method to Mechanism Synthesis.
HaiJun Su*, University of California, Irvine
(100108129)

8:00 a.m.

Sunday October 24, 2004, 8:30 a.m.10:50 a.m.
Special Session on Iterated Function Systems and Analysis on Fractals, III
Room L 160, Technological Institute
Organizers:
KaSing Lau, Chinese University of Hong Kong kslau@math.cuhk.edu.hk
Stephen S.T. Yau, University of Illinois at Chicago yau@uic.edu

8:30 a.m.
Gaussian Random Fields and Salem Sets.
Yimin Xiao*, Michigan State University
(10016081) 
9:00 a.m.
Break 
9:30 a.m.
General finite type IFS and Mmatrix.
Stephen S.T. Yau*, Dept. of Math. Stat. & Computer Sci., University of Illinois at Chicago
Ning Jin, Dept. of Math., Nanjing University, China
(10013711) 
10:00 a.m.
A generalized finite type condition for iterated function systems.
KaSing Lau, Department of Mathematics, The Chinese University of Hong Kong
SzeMan Ngai*, Department of Mathematical Sciences, Georgia Southern University
(100128112) 
10:30 a.m.
Asymptotical Geometry of Cantor Systems.
Yunping Jiang*, CUNY/CAS
(10013777)

8:30 a.m.

Sunday October 24, 2004, 8:30 a.m.11:20 a.m.
Special Session on Nonlinear Waves, III
Room L R2, Technological Institute
Organizers:
Jerry L. Bona, University of Illinois at Chicago bona@math.uic.edu
Shuming Sun, Virginia Polytechnic Institute and State University sun@math.vt.edu
Bingyu Zhang, University of Cincinnati bzhang@math.uc.edu

8:30 a.m.
On the persistence of KdV solitons in the unstable dynamics of inclined film flow.
Robert L Pego*, Carnegie Mellon University
Guido Schneider, Mathematisches Institut I, Universit\"at Karlsruhe
Hannes Uecker, Mathematisches Institut I, Universit\"at Karlsruhe
(100135357) 
9:00 a.m.
Stability of solitarywave solutions for the Ostrovsky equation with weak rotation.
Yue Liu*, University of Texas at Arlington
(10013550) 
9:30 a.m.
Longtime Soliton Dynamics of Variable Bottom KdVs.
Steven Ivan Dejak*, University of Toronto, Toronto, Canada
I. M. Sigal, University of Notre Dame and University of Toronto
(100135377) 
10:00 a.m.
Existence and stability of periodic travellingwave solutions of the Benjamin equation.
Borys Alvarez*, University of Illinois at Chicago
Jaime Angulo, IMECC  UNICAMP, Brazil
(10013558) 
10:30 a.m.
HigherOrder Stability of Solitary Waves.
Nghiem V. Nguyen*, University of Oklahoma/ Purdue University
John P. Albert, University of Oklahoma
Jerry L. Bona, University of Illinois at Chicago
Yue Liu, University of Texas at Arlington
(100135304) 
11:00 a.m.
Asymptotic Stability of Nonlinear Schr\"odinger Equations with Potential.
Gang Zhou*, University of Notre Dame & University of Toronto
I M Sigal, University of Notre Dame & University of Toronto
(100135376)

8:30 a.m.

Sunday October 24, 2004, 8:30 a.m.10:45 a.m.
Special Session on Mathematical Problems in Robotics, III
Room A 110, Technological Institute
Organizers:
Robert W. Ghrist, University of Illinois at UrbanaChampaign ghrist@math.uiuc.edu

8:30 a.m.
Braid groups of graphs: some new results.
Aaron D. Abrams*, MSRI and Emory University
(100157402) 
9:00 a.m.
Protein Similarity from Isotopic Line Weavings.
Michael A. Erdmann*, Carnegie Mellon University
(100192213) 
9:30 a.m.
Optimal Robot Navigation Without Measuring Distances.
Steven M. LaValle*, University of Illinois at UrbanaChampaign
Benjamin Tovar, University of Illinois at UrbanaChampaign
Luis Guilamo, University of Illinois at UrbanaChampaign
Rafael Murrieta, University of Illinois at UrbanaChampaign
(100168364) 
10:00 a.m.
Algorithms for Neural Prosthetics.
Joel W Burdick*, California Institute of Technology
(100192370)

8:30 a.m.

Sunday October 24, 2004, 8:30 a.m.10:50 a.m.
Special Session on Algebraic Representations and Deformations, III
Room LG 52, Technological Institute
Organizers:
Stephen R. Doty, Loyola University of Chicago doty@math.luc.edu
Anthony Giaquinto, Loyola University of Chicago tonyg@math.luc.edu

8:30 a.m.
The Noncommutative Ward Correspondence.
K. C. Hannabuss, Balliol College, University of Oxford
S. J. Brain*, St Cross College, University of Oxford
(100151260) 
9:00 a.m.
Applications of the path model.
Arun Ram*, Department of Mathematics, University of Wisconsin, Madison
(100117269) 
9:30 a.m.
New examples of quantum ${\mathbb P}^3$ with finitely many points.
Darin R. Stephenson*, Hope College
Michaela Vancliff, University of Texas at Arlington
(100116229) 
10:00 a.m.
An AlgebroGeometric Method for Constructing Clifford Quantum~${\mathbb{P}}^3$s with a Predetermined Finite Point Scheme.
Darin R Stephenson, Hope College, MI
Michaela Vancliff*, Univ. of Texas at Arlington
(100116250) 
10:30 a.m.
Flat Monoids and Deformations of a Semisimple Group.
Lex E. Renner*, University of Western Ontario
(100120110)

8:30 a.m.

Sunday October 24, 2004, 8:30 a.m.11:20 a.m.
Special Session on Mathematical Techniques in Musical Analysis, III
Auditorium, Technological Institute
Organizers:
Judith Baxter, University of Illinois at Chicago baxter@uic.edu
Richard Cohn, University of Chicago rcohn@uchicago.edu
Robert Peck, Louisiana State University rpeck@lsu.edu

8:30 a.m.
Discussion 
9:30 a.m.
From Rhythmic Canons to Fuglede's conjecture.
Emmanuel Amiot*, Perpignan, France
(100112114) 
10:30 a.m.
Measuring Musical Dissimilarity: First and Second Order Center of Effect (CE) Differences Inside the Spiral Array.
Elaine Chew*, University of Southern California Viterbi School of Engineering, Epstein Dep of Industrial and Systems Engineering
(100115416)

8:30 a.m.

Sunday October 24, 2004, 8:30 a.m.11:20 a.m.
Special Session on Hopf Algebras at the Crossroads of Algebra, Category Theory, and Topology, III
Room G 45, Donald P. Jacobs Center
Organizers:
Louis H. Kauffman, University of Illinois at Chicago kauffman@uic.edu
David E. Radford, University of Illinois at Chicago radford@uic.edu
Fernando J. O. Souza, University of Iowa fernandosouza@uiowa.edu

8:30 a.m.
Central Braided Hopf Algebras.
Peter C Schauenburg*, Mathematisches Institut der Universit\"at M\"unchen
(100116186) 
9:00 a.m.
Central Invariants and Higer Indicators for Semisimple QuasiHopf Algebras.
SiuHung Ng*, Iowa State University
Peter Schauenburg, Mathematisches Institut Der Universit\"{a}t M\"{u}nchen
(100116380) 
9:30 a.m.
Canonical central elements in quasitriangular Hopf algebras.
Thomas Kerler*, The Ohio State University
(100116287) 
10:00 a.m.
On integrals and trace functions for Hopfalgebra objects in symmetric, traced categories.
Fernando J. O. Souza*, University of Iowa
(100116420) 
10:30 a.m.
About categories of matched pairs and Singer pairs of Hopf algebras.
Mitja Mastnak*, Dalhousie University
(100116347) 
11:00 a.m.
A uniqueness property for quantizations of Teichm\"uller spaces.
Hua Bai*, University of Southern California
(100117202)

8:30 a.m.

Sunday October 24, 2004, 8:30 a.m.11:20 a.m.
Special Session on Extremal Combinatorics, III
Room G 36, Donald P. Jacobs Center
Organizers:
Dhruv Mubayi, University of Illinois at Chicago mubayi@math.uic.edu
Yi Zhao, University of Illinois at Chicago zhao@math.uic.edu

8:30 a.m.
Optimal Graph Labellings: Edgebandwidth of graphs.
Jozsef Balogh*, The Ohio State University, Columbus, OH
Dhruv Mubayi, University of Illinois at Chicago
Andras Pluhar, University of Szeged, Szeged, Hungary
(100105303) 
9:00 a.m.
Channel Assignments for Infinite Graphs.
Jerrold R. Griggs*, University of South Carolina
Xiaohua Teresa Jin, University of South Carolina
(100105247) 
9:30 a.m.
On colored arithmetic progressions.
Maria Axenovich*, Iowa State University
(100105154) 
10:00 a.m.
The Steiner Problem in the hypercube.
Tao Jiang*, Miami University, Oxford, Ohio
Dan Pritikin, Miami University, Oxford, Ohio
(100105136) 
10:30 a.m.
Convex crossing numbers, circular arrangement problem, and isoperimetric functions.
Eva Czabarka, College of William & Mary
Ondrej Sykora, Loughborough University
Laszlo Szekely*, University of South Carolina
Imrich Vrto, Institute of Informatics, Slovak Academy of Sciences
(100105197) 
11:00 a.m.
Families with forbidden inclusion pattern.
Gyula O.H. Katona*, University of South Carolina, Columbia, SC and R\'enyi Institute, Budapest,
(100105429)

8:30 a.m.

Sunday October 24, 2004, 8:30 a.m.11:20 a.m.
Special Session on Fluid Dynamics, Diffusion and Reaction, III
Room M 177, Technological Institute
Organizers:
Peter S. Constantin, University of Chicago const@cs.uchicago.edu
Leonid V. Ryzhik, University of Chicago ryzhik@math.uchicago.edu

8:30 a.m.
A variational principle based study of KPP front speeds in random shear flows.
Jack Xin*, University of Texas
(100135173) 
9:30 a.m.
Estimates in singularly perturbed models for diffusion flames.
JeanMichel Roquejoffre*, Université Paul Sabatier Toulouse
(100135378) 
10:30 a.m.
Quenching of combustion by fluid flow.
Alexander Kiselev*, University of Wisconsin, Madison
(100135255)

8:30 a.m.

Sunday October 24, 2004, 8:30 a.m.10:55 a.m.
Special Session on Geometric Partial Differential Equations, II
Room L R5, Technological Institute
Organizers:
GuiQiang Chen, Northwestern University gqchen@math.northwestern.edu
Jared Wunsch, Northwestern University jwunsch@math.northwestern.edu

8:30 a.m.
Asymptotics of neckpinching in Ricci flow.
Sigurd B Angenent*, Math Dept/UW Madison
(100153236) 
9:00 a.m.
Ideal boundary conditions and intersection cohomology.
Eugenie Hunsicker*, Lawrence University
(100135259) 
9:30 a.m.
The Bernstein problem in the Heisenberg group.
Nicola Garofalo*, Purdue University
Scott Pauls, Dartmouth University
(100151165) 
10:00 a.m.
Resolvents of elliptic cone operators.
Juan B Gil*, Penn State Altoona
Thomas Krainer, University of Potsdam, Germany
Gerardo A Mendoza, Temple University
(100158246) 
10:30 a.m.
Gluing and comparison formulae for the spectral invariants of Dirac operators on compact and noncompact manifolds.
Paul A Loya*, SUNY Binghamton
(10015849)

8:30 a.m.

Sunday October 24, 2004, 8:30 a.m.11:20 a.m.
Special Session on Computability Theory and Applications, III
Room G 03, Donald P. Jacobs Center
Organizers:
Robert I. Soare, University of Chicago soare@math.uchicago.edu
Denis R. Hirschfeldt, University of Chicago drh@math.uchicago.edu

8:30 a.m.
The existential theory of the jumpusl of Turing degrees with least element.
Manuel Lerman*, University of Connecticut
(10010362) 
9:00 a.m.
What is computability for physical systems?
Anil Nerode*, Department of Mathematics, Cornell University
(100103185) 
9:30 a.m.
On Fra\"{\i}ss\'{e}'s conjecture and some equivalent statements.
Antonio Montalban*, Cornell University
(10010380) 
10:00 a.m.
Mass Problems to the Rescue!
Stephen G. Simpson*, Department of Mathematics, Pennsylvania State University
(10010398) 
10:30 a.m.
Invariance and degree in the lattice of $\Pi^0_1$ classes.
Rebecca Weber*, Penn State
(10010392) 
11:00 a.m.
An Application of Kolmogorov Complexity to the Structure of Scott Sets.
Theodore A. Slaman*, University of California, Berkeley
(100103143)

8:30 a.m.

Sunday October 24, 2004, 9:00 a.m.10:50 a.m.
Special Session on Differential Geometry, III
Room MG 28, Technological Institute
Organizers:
Anders Ingemar Linner, Northern Illinois University linner@math.northwestern.edu
Hongyou Wu, Northern Illinois University wu@math.niu.edu

9:00 a.m.
Cylindrical Contact Homology of Subcritical Steinfillable Contact Manifolds.
MeiLin Yau*, Michigan State University
(10015736) 
9:30 a.m.
Mixed Dimensional Compactness and $\mathbb{R}^n X \mathbb{S} ^{n1}$ Sphere Bundle Measures.
Simon P Morgan*, University of Minnesota
(10015309) 
10:00 a.m.
The Theorema Egregium for $\nu$Gaussian curvatures.
Matias Navarro*, Facultad de Matematicas, Universidad Autonoma de Yucatan
F SanchezBringas, Facultad de Ciencias, UNAM
(10015334) 
10:30 a.m.
Comparison theorems for generalized Riccati equations and applications.
Libin Mou*, Bradley University
(100153214)

9:00 a.m.

Sunday October 24, 2004, 9:00 a.m.10:50 a.m.
Special Session on Spectral Problems of Differential Operators, III
Room M 128, Technological Institute
Organizers:
Qingkai Kong, Northern Illinois University kong@math.niu.edu
Hongyou Wu, Northern Illinois University wu@math.niu.edu
Anton Zettl, Northern Illinois University zettl@math.niu.edu

9:00 a.m.
Simple and double eigenvalues of the Hill operator with a two term potential.
Boris Mityagin*, Department of Mathematics, the Ohio State University
Plamen Djakov,
(100147226) 
10:00 a.m.
Asymptotics of spectral gaps of 1D periodic Schroedinger operators with two term potentials.
Plamen Djakov*, Sofia University
Boris Mityagin, The Ohio State University
(10014726) 
10:30 a.m.
Abstract LeftDefinite Theory for Positive SelfAdjoint Operators.
L. L. Littlejohn*, Department of Mathematics and Statistics, Utah State University
(100134302)

9:00 a.m.

Sunday October 24, 2004, 9:00 a.m.10:50 a.m.
Special Session on Geometric Aspects of the Langlands Program, III
Room L 251, Technological Institute
Organizers:
Edward Frenkel, University of California Berkeley frenkel@math.berkeley.edu
Dennis Gaitsgory, University of Chicago gaitsgde@math.uchicago.edu
Mark Goresky, Institute for Advanced Study goresky@ias.edu
Kari Vilonen, Northwestern University vilonen@math.northwestern.edu

9:00 a.m.
Towards higherdimensional Langlands correspondence.
Mikhail Kapranov*, Yale University
(100114362) 
10:00 a.m.
Applications of Motivic Integration to Representation Theory.
Thomas C Hales*, University of Pittsburgh
(100122219)

9:00 a.m.

Sunday October 24, 2004, 9:00 a.m.11:20 a.m.
Special Session on Modern Schubert Calculus, III
Room G 44, Donald P. Jacobs Center
Organizers:
Ezra Miller, University of Minnesota ezra@math.umn.edu
Frank Sottile, Texas A&M University sottile@math.tamu.edu

9:00 a.m.
Equivariant cohomology of the Quot scheme.
Tom Braden*, University of Massachusetts, Amherst
Linda Chen, Ohio State University
Frank Sottile, Texas A&M University
(100114324) 
9:30 a.m.
The Tequivariant cohomology of cell complexes and the case of infinite Grassmannians.
Megumi Harada*, University of Toronto
(100153228) 
10:00 a.m.
MirkovicVilonen cycles and polytopes.
Joel Kamnitzer*, University of California, Berkeley
(100122307) 
10:30 a.m.
Generalizing group exponents using the topology of subvarieties of the flag variety.
Julianna S Tymoczko*, University of Michigan
(100114428) 
11:00 a.m.
Some new results on Thom polynomials.
Richard Rimanyi*, University of North Carolina at Chapel Hill
(100114321)

9:00 a.m.

Sunday October 24, 2004, 9:00 a.m.11:20 a.m.
Special Session on Representation Theory of Reductive Groups, III
Room LG 66, Technological Institute
Organizers:
Jeffrey D. Adler, University of Akron adler@uakron.edu
JuLee Kim, University of Illinois at Chicago julee@math.uic.edu

9:00 a.m.
Transfer of generic representations from $GSp(4)$ to $GL(4)$.
Mahdi Asgari*, Institute for Advanced Study
(100111314) 
9:30 a.m.
Local newforms for GSp(4).
Brooks Roberts*, University of Idaho
Ralf Schmidt, University of Oklahoma
(100122105) 
10:00 a.m.
SaitoKurokawa representations of $PGSp_4$ and its inner forms.
Wee Teck Gan*, University of California, San Diego
(100122346) 
10:30 a.m.
Functoriality and applications.
Muthu Krishnamurthy*, University of Michigan
(100111354) 
11:00 a.m.
Base Change and Ktypes for U(3).
Joshua Michael Lansky*, American University
Jeffrey D. Adler, University of Akron
(100122398)

9:00 a.m.

Sunday October 24, 2004, 9:00 a.m.11:20 a.m.
Special Session on LowDimensional Topology and Kleinian Groups, III
Room LG 76, Technological Institute
Organizers:
Ian Agol, University of Illinois at Chicago agol@math.uic.edu
John Holt, University of Illinois at Chicago jholt@math.uic.edu
Saul Schleimer, University of Illinois at Chicago saul@math.uic.edu

9:00 a.m.
Discussion 
9:30 a.m.
Distribution of length segments for a random geodesic.
Martin Bridgeman*, Boston College
David Dumas, Harvard University
(100100432) 
10:00 a.m.
Towards a classification of Primitive/SeifertFibered tunnel number one knots.
John O. Berge*, Madison, WI
(100157366) 
10:30 a.m.
Punctured torus quasifuchsian groups.
Francois Gueritaud*, University of Southern California
(100157330) 
11:00 a.m.
Heegaard splittings and hyperbolic geometry.
Hossein Namazi*, Yale University and Stony Brook University
(100157422)

9:00 a.m.

Sunday October 24, 2004, 9:00 a.m.11:25 a.m.
Special Session on Special Functions, Orthogonal Polynomials, and their Applications, III
Room L 158, Technological Institute
Organizers:
George Gasper, Northwestern University george@math.northwestern.edu
Ahmed I. Zayed, DePaul University azayed@math.depaul.edu

9:00 a.m.
A Generalization of the Prolate Spheroidal Wave Functions.
Ahmed I Zayed*, DePaul University
(100133316) 
9:30 a.m.
A new method of calculating values of prolate spheroidal wave functions.
Gilbert G. Walter*, UWMilwaukee
Tatiana Soleski, UWMilwaukee
(10014172) 
10:00 a.m.
A new approach to the orthogonality of the Laguerre and Hermite polynomials.
Slobodan B. Trickovic*, University of Nis, Serbia
Miomir S. Stankovic, University of Nis, Serbia
(10013316) 
10:30 a.m.
Asymptotic analysis of the Krawtchouk polynomials by the WKB method.
Diego Dominici*, SUNY New Paltz
(10014128) 
11:00 a.m.
Analysis of the Paraxial Wave Equation: An Application of Special Functions.
Pete A McCoy*, U.S. Naval Academy
Reza MalekMadani, U.S. Naval Academy
(100133153)

9:00 a.m.

Sunday October 24, 2004, 9:00 a.m.10:50 a.m.
Special Session on Codes and Applications, III
Room G 42, Donald P. Jacobs Center
Organizers:
William C. Huffman, Loyola University of Chicago wch@math.luc.edu
Vera S. Pless, University of Illinois at Chicago pless@math.uic.edu

9:00 a.m.
Constructing Optimal Linear Codes.
Anton Betten*, Colorado State University
(100105208) 
9:30 a.m.
On Optimal linear codes over GF(8).
Christopher M Jones*, St. Mary's College of California
(10019475) 
10:00 a.m.
Identifying codes and their cousins.
Ari Trachtenberg*, Boston University
(100194298) 
10:30 a.m.
Optimal Linear Codes over $Z_4$.
Steven T. Dougherty, University of Scranton
T. Aaron Gulliver*, University of Victoria
(100194340)

9:00 a.m.

Sunday October 24, 2004, 9:00 a.m.10:55 a.m.
Special Session on Nonlinear Partial Differential Equations and Applications, III
Room L R3, Technological Institute
Organizers:
GuiQiang Chen, Northwestern University gqchen@math.northwestern.edu
Mikhail Feldman, University of Wisconsin at Madison feldman@math.wisc.edu

9:00 a.m.
Plasma sheaths and their dynamics.
M. Slemrod*, University of Wisconsin Madison
(10013540) 
9:30 a.m.
Regularity of solutions to anisotropic elliptic equations.
Gary M Lieberman*, Iowa State University
(100135135) 
10:00 a.m.
On a Multidimensional Model for the Dynamic Combustion of Compressible Reacting Flows.
D. Donatelli, University of L'Aquila
K. Trivisa*, University of Maryland at College Park
(10013593) 
10:30 a.m.
Global Structure of Solutions to a TwoDimensional System of Conservation Laws.
Dehua Wang*, University of Pittsburgh
(10013590)

9:00 a.m.

Sunday October 24, 2004, 9:30 a.m.11:20 a.m.
Special Session on Stability Issues in Fluid Dynamics, III
Room L R4, Technological Institute
Organizers:
Susan J. Friedlander, University of Illinois at Chicago susan@math.uic.edu
Roman Shvydkoy, University of Illinois at Chicago shvydkoy@math.uic.edu

9:30 a.m.
Dynamic Bifurcation in Geophysical Fluid Dynamics.
Tiian Ma, Indiana University and Sichuan University
Shouhong Wang*, Indiana University
(100176336) 
10:00 a.m.
Strange eigenmodes of linear operators occuring in stability theory.
Raymond T Pierrehumbert*, The University of Chicago
(10013523) 
10:30 a.m.
Stability of Lagrangian ideal flows.
Stephane Leblanc*, LSEET/CNRS, University of ToulonVar, France
David Guimbard, LSEET/CNRS, University of ToulonVar, France
(100176299) 
11:00 a.m.
Ergodicity of the degenerately forced Stochastic NavierStokes Equations.
Jonathan C Mattingly*, Mathematics Department, Duke University
Etienne Pardoux, Universite de Provence
Martin Hairer, University of Warwick, UK
(100176423)

9:30 a.m.

Sunday October 24, 2004, 9:30 a.m.11:20 a.m.
Special Session on Applications of Motives, III
Room L 211, Technological Institute
Organizers:
Eric M. Friedlander, Northwestern University eric@math.northwestern.edu
Alexander Goncharov, Brown University sasha@math.brown.edu
Mikhail Kapranov, Yale University mikhail.kapranov@yale.edu
Yuri Manin, Max Planck Institute for Mathematics manin@mpimbonn.mpg.de

9:30 a.m.
Motivic tubular neighborhoods.
Marc Levine*, Northeastern University
(100114117) 
10:30 a.m.
Ktheory of logschemes.
Wieslawa Krystyna Niziol*, University of Utah
(100111417)

9:30 a.m.

Sunday October 24, 2004, 9:30 a.m.11:15 a.m.
Special Session on Index Theory, Morse Theory, and the Witten Deformation Method, III
Room L 221, Technological Institute
Organizers:
Igor Prokhorenkov, Texas Christian University i.prokhorenkov@tcu.edu
Ken Richardson, Texas Christian University k.richardson@tcu.edu

9:30 a.m.
Equivalence of spectral projections in semiclassical limit and a vanishing theorem for higher traces in $K$theory.
Yuri Kordyukov, Institute of Mathematics, Russian Academy of Sciences, Ufa, Russia
Varghese Mathai, University of Adelaide, Adelaide, Australia
Mikhail Shubin*, Northeastern University, Boston, USA
(10015870) 
10:30 a.m.
Morse Inequalitites, A Path Space Approach.
Ionel Popescu*, Northwestern University / MIT
(100153427)

9:30 a.m.

Sunday October 24, 2004, 11:40 a.m.12:30 p.m.
Invited Address
Khovanov homology and nilpotent slices.
Auditorium, Technological Institute
Paul Seidel*, Imperial CollegeLondon and University of Chicago
(10010004) 
Sunday October 24, 2004, 2:00 p.m.2:50 p.m.
Invited Address
Two generator Kleinian groups.
Auditorium, Technological Institute
Ian Agol*, University of Illinois at Chicago
(100157331) 
Sunday October 24, 2004, 3:00 p.m.4:20 p.m.
Special Session on Stability Issues in Fluid Dynamics, IV
Room L R4, Technological Institute
Organizers:
Susan J. Friedlander, University of Illinois at Chicago susan@math.uic.edu
Roman Shvydkoy, University of Illinois at Chicago shvydkoy@math.uic.edu

3:00 p.m.
Nonlinear Instability of Ideal Plane Flows.
Zhiwu Lin*, Courant Institute
(100176297) 
3:30 p.m.
Linear Stability in an Ideal Incompressible Fluid.
Yuri Latushkin*, Department of Mathematics, University of MissouriColumbia
(100176134) 
4:00 p.m.
Geometric optics spectral theory for advective equations.
Roman Shvydkoy*, University of Illinois at Chicago
(100135240)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.5:20 p.m.
Special Session on Iterated Function Systems and Analysis on Fractals, IV
Room L 160, Technological Institute
Organizers:
KaSing Lau, Chinese University of Hong Kong kslau@math.cuhk.edu.hk
Stephen S.T. Yau, University of Illinois at Chicago yau@uic.edu

3:00 p.m.
A NonAdditive Thermodynamic Formalism.
Yakov Pesin, Penn State University
Anna Mummert*, Penn State University
(10013719) 
3:30 p.m.
Diophantine Approximation for Conformal Measures of OneDimensional Iterated Function Systems.
Mariusz Urbanski*, University of North Texas
(10013714) 
4:00 p.m.
Complex Dimensions of SelfSimilar Fractals: OneDimensional Theory and the Example of the Koch Snowflake Curve in Two Dimensions.
Michel L. Lapidus*, University of California, Riverside
Erin P. J. Pearse, University of California, Riverside
(10012861) 
4:30 p.m.
A tube formula for the Koch snowflake curve, with applications to complex dimensions.
Michel L. Lapidus, University of California, Riverside
Erin P.J. Pearse*, University of California, Riverside
(10013722) 
5:00 p.m.
Housdorff Dimension of General Sierpinski Carpets in $R^m$.
Ning Jin*, University of Illinois at Chicago, Chicago, IL 60607
(100137419)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.5:50 p.m.
Special Session on Algebraic Topology: Interactions with Representation Theory and Algebraic Geometry, IV
Room LG 68, Technological Institute
Organizers:
Paul G. Goerss, Northwestern University pgoerss@math.northwestern.edu
Jesper Kragh Grodal, University of Chicago jg@math.uchicago.edu
Brooke E. Shipley, University of Illinois at Chicago bshipley@math.uic.edu

3:00 p.m.
Automorphism groups of free groups with boundaries.
Nathalie Wahl*, Aarhus University
(100155320) 
3:30 p.m.
Parametrized equivariant stable homotopy theory.
Johann Sigurdsson*, Univeristy of Notre Dame
J. Peter May, The University of Chicago
(100155270) 
4:00 p.m.
The Goodwillie derivatives of a monoid.
Andrew MauerOats*, Northwestern University
(100155334) 
4:30 p.m.
The CircleEquivariant Sigma Orientation.
David Gepner*, University of Illinois UrbanaChampaign
(100155276) 
5:00 p.m.
$\lambda$ring structures over $\mathbf{Z} \lbrack \lbrack x \rbrack \rbrack$.
Donald Y. Yau*, University of Illinois at UrbanaChampaign
(100155101) 
5:30 p.m.
A report on weak ncategories.
J. P. May*, The University of Chicago
(100155284)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.3:50 p.m.
Special Session on Nonlinear Waves, IV
Room L R2, Technological Institute
Organizers:
Jerry L. Bona, University of Illinois at Chicago bona@math.uic.edu
Shuming Sun, Virginia Polytechnic Institute and State University sun@math.vt.edu
Bingyu Zhang, University of Cincinnati bzhang@math.uc.edu

3:00 p.m.
A model for Landau damping in plasma physics.
Thierry Colin*, University Bordeaux 1
Radouin Belaouard, CEACESTA
Gerard Gallice, CEACESTA
Cedric Galusinski, University Bordeaux 1
(10013559) 
3:30 p.m.
Forward stimulated Brillouin scattering instability of a spatially and temporally incoherent laser beam.
Pavel M Lushnikov*, Department of Mathematics, University of Notre Dame
(100178375)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.5:15 p.m.
Special Session on Mathematical Problems in Robotics, IV
Room A 110, Technological Institute
Organizers:
Robert W. Ghrist, University of Illinois at UrbanaChampaign ghrist@math.uiuc.edu

3:00 p.m.
A Grammatical Approach to SelfOrganizing Robotic Systems.
Eric Klavins*, University of Washington
(100168172) 
3:30 p.m.
Coverage, Complexity and Feasibility Issues in Mobile Sensor Networks.
Abubakr Muhammad*, Georgia Institute of Technology, Atlanta, GA
(100193371) 
4:00 p.m.
Deterministic Sampling Methods for Spheres and SO(3).
Anna Yershova*, University of Illinois
Steven M. LaValle, University of Illinois
(100168328) 
4:30 p.m.
Collisionfree motion planning.
Michael Farber*, University of Durham, UK
(100155397)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.6:20 p.m.
Special Session on Spectral Problems of Differential Operators, IV
Room M 128, Technological Institute
Organizers:
Qingkai Kong, Northern Illinois University kong@math.niu.edu
Hongyou Wu, Northern Illinois University wu@math.niu.edu
Anton Zettl, Northern Illinois University zettl@math.niu.edu

3:00 p.m.
A Borg type theorem for matrixvalued supersymmetric Dirac difference operators.
S Clark*, University of MissouriRolla
F Gesztesy, University of MissouriColumbia
(100134339) 
3:30 p.m.
On Periodic MatrixValued WeylTitchmarsh Functions.
Miron Bekker*, University of MissouriRolla
Eduard Tsekanovskii, Niagara University
(100147157) 
4:00 p.m.
The spectral function associated with SturmLiouville equations with potential of Wignervon Neumann type.
D. J. Gilbert, Dublin Institute of Technology
B. J. Harris, Northern Illinois University
S. M. Riehl*, University of Northern Iowa
(100134108) 
4:30 p.m.
Rightdefinite halflinear SturmLiouville Problems.
Lingju Kong*, Northern Illinois University, Dekalb, IL 60115
Qingkai Kong, Northern Illinois University
(10013445) 
5:00 p.m.
Break 
5:30 p.m.
Geometric Aspects of SturmLiouville Problems, V. Natural Loops of Boundary Conditions for Monotonicity of Eigenvalues and Their Applications.
WuJian Peng, Northern Illinois University
Mihai T. Racovitan*, Northern Illinois University
HongYou Wu, Northern Illinois University
(10013408) 
6:00 p.m.
Discontinuous BoundaryValue Problems: Expansion and Sampling Theorems.
Ahmed Zayed*, DePaul University
M. Annaby, Cairo University
G. Freiling, University of Duisburg
(100134430)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.4:50 p.m.
Special Session on Geometric Aspects of the Langlands Program, IV
Room L 251, Technological Institute
Organizers:
Edward Frenkel, University of California Berkeley frenkel@math.berkeley.edu
Dennis Gaitsgory, University of Chicago gaitsgde@math.uchicago.edu
Mark Goresky, Institute for Advanced Study goresky@ias.edu
Kari Vilonen, Northwestern University vilonen@math.northwestern.edu

3:00 p.m.
On the stability of invariant distributions over local fields.
David Kazhdan*, Hebrew university, Jerusaelm, Israel
(10011773) 
4:00 p.m.
Uhlenbeck spaces for ${\mathbb A}^2$ and affine Lie algebras.
Michael Finkelberg*, Independent Moscow University
(10011476)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.5:50 p.m.
Special Session on Algebraic Representations and Deformations, IV
Room LG 52, Technological Institute
Organizers:
Stephen R. Doty, Loyola University of Chicago doty@math.luc.edu
Anthony Giaquinto, Loyola University of Chicago tonyg@math.luc.edu

3:00 p.m.
A qPartition Algebra.
Tom Halverson*, Macalester College
Arun Ram, Univeristy of Wisconsin  Madison
(10012086) 
3:30 p.m.
Hochschild cohomology of nalgebras and string topology.
Alexander A Voronov*, University of Minnesota
(100116145) 
4:00 p.m.
Deformations and Extensions of Infinity Algebras.
Michael R. Penkava*, University of WisconsinEau Claire
(100117257) 
4:30 p.m.
Kronecker quiver and bases of quantum affine $sl_2$.
Kevin McGerty*, University of Chicago
(100116356) 
5:00 p.m.
Quantum group actions, Rmatrices and deformations of algebras.
Georgia Benkart, University of Wisconsin
Sarah Witherspoon*, Texas A&M University
(100116169) 
5:30 p.m.
The affine BirmanWenzlMurakami algebras and tangles in the solid torus.
Frederick M. Goodman*, University of Iowa
Holly Hauschild, University of Iowa
(100116387)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.5:20 p.m.
Special Session on Modern Schubert Calculus, IV
Room G 44, Donald P. Jacobs Center
Organizers:
Ezra Miller, University of Minnesota ezra@math.umn.edu
Frank Sottile, Texas A&M University sottile@math.tamu.edu

3:00 p.m.
Eigenvalue problems and a new product in the cohomology of flag varieties.
Prakash Belkale*, Department of Mathematics UNC, Chapel Hill, North Carolina, USA.
Shrawan Kumar, Department of Mathematics, UNC Chapel Hill.
(100114295) 
3:30 p.m.
A Horntype Recursion for Minuscule Schubert Calculus.
Kevin Purbhoo*, Fields Institute
Frank Sottile, Texas A&M University
(100114147) 
4:00 p.m.
Equivariant Quantum Schubert Calculus.
Leonardo Constantin Mihalcea*, University of Michigan
(100114109) 
4:30 p.m.
A New Combinatorial Model for the Equivariant $K$theory of $G/P$.
Cristian P. Lenart*, State University of New York at Albany
(10012253) 
5:00 p.m.
Degrees of Schubert varieties.
Alexander Postnikov*, MIT
(100105383)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.4:50 p.m.
Special Session on Representation Theory of Reductive Groups, IV
Room LG 66, Technological Institute
Organizers:
Jeffrey D. Adler, University of Akron adler@uakron.edu
JuLee Kim, University of Illinois at Chicago julee@math.uic.edu

3:00 p.m.
A construction of primitive ideals in enveloping algebras by explicit generators.
Victor Protsak*, Department of Mathematics, University of Oklahoma
(100117319) 
3:30 p.m.
Jacquet modules for $p$adic general linear groups.
Chris S. Jantzen*, East Carolina University
(10012246) 
4:00 p.m.
Supercuspidal characters of $SL_\ell$ over a $p$adic field, $\ell$ a prime.
Loren R Spice*, University of Michigan
(100122116) 
4:30 p.m.
On the local constancy of characters.
Jonathan Korman*, Univ. of Toronto, Math. Dept.
(10012263)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.5:50 p.m.
Special Session on LowDimensional Topology and Kleinian Groups, IV
Room LG 76, Technological Institute
Organizers:
Ian Agol, University of Illinois at Chicago agol@math.uic.edu
John Holt, University of Illinois at Chicago jholt@math.uic.edu
Saul Schleimer, University of Illinois at Chicago saul@math.uic.edu

3:00 p.m.
Heegaard surfaces and measured laminations.
Tao Li*, Oklahoma State University
(100157292) 
3:30 p.m.
A combination theorem for Veech subgroups of the mapping class group.
Christopher J. Leininger*, Columbia University
Alan W. Reid, University of Texas at Austin
(100151198) 
4:00 p.m.
Representationvolume rigidity for hyperbolic manifolds.
Ben Klaff*, University of Texas at Austin
(100157329) 
4:30 p.m.
Geometric tameness in wordhyperbolic closed threemanifold groups.
Joshua B Barnard*, University of Oklahoma
(100157388) 
5:00 p.m.
Teichmuller geodesics and Lines of Minima.
Kasra Rafi*, University of California Santa Barbara
Caroline Series, University of Warwick
YoungEun Choi,
(100100431) 
5:30 p.m.
The Heegaard genus of a union of small manifolds.
Eric Sedgwick*, DePaul University
David Bachman, Pitzer College
Saul Schleimer, Rutgers University
(100157369)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.4:25 p.m.
Special Session on Special Functions, Orthogonal Polynomials, and their Applications, IV
Room L 158, Technological Institute
Organizers:
George Gasper, Northwestern University george@math.northwestern.edu
Ahmed I. Zayed, DePaul University azayed@math.depaul.edu

3:00 p.m.
Secondorder superintegrable systems on conformally flat spaces.
Willard Miller*, School of Mathematics, University of Minnesota
(10013396) 
3:30 p.m.
The coexistence problem for the Heun equation.
Hans W Volkmer*, Univeristy of WisconsinMilwaukee
(100133217) 
4:00 p.m.
A nonlinear differential equation satisfied by modular forms with level 2.
Heekyoung Hahn*, University of Rochester
(100133193)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.5:40 p.m.
Special Session on Mathematical Techniques in Musical Analysis, IV
Auditorium, Technological Institute
Organizers:
Judith Baxter, University of Illinois at Chicago baxter@uic.edu
Richard Cohn, University of Chicago rcohn@uchicago.edu
Robert Peck, Louisiana State University rpeck@lsu.edu

3:00 p.m.
Towards a MetaPhysics of the Musical Mind: Canonical Formulation of Weber/Fechner's Law in Application to Tonal Music.
Thomas Noll*, Technical University of Berlin
(100122359) 
4:00 p.m.
Toward a General Theory of Key Signatures and Enharmonic Equivalence.
Julian Hook*, Indiana University
(10010084) 
5:00 p.m.
Piano technique and permutation groups.
Lucian B. Zidaru*, Louisiana State University
Robert W. Peck, Louisiana State University
(100120413)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.5:20 p.m.
Special Session on Hopf Algebras at the Crossroads of Algebra, Category Theory, and Topology, IV
Room G 45, Donald P. Jacobs Center
Organizers:
Louis H. Kauffman, University of Illinois at Chicago kauffman@uic.edu
David E. Radford, University of Illinois at Chicago radford@uic.edu
Fernando J. O. Souza, University of Iowa fernandosouza@uiowa.edu

3:00 p.m.
Hopf algebras at the crossroads: mathematical structure in quantum fields.
Dirk Kreimer*, CNRSIHES and Center for Math.Phys., Boston Univ.
(100181102) 
3:30 p.m.
Representations of the Poincare 2Group.
Louis Crane*, Kansas State University
(100118215) 
4:00 p.m.
Groupoidenriched groupoid category, Frobenius algebra, and relativity.
Zbigniew Oziewicz*, Universidad Nacional Autonoma de Mexico, Facultad de Estudios Superiores Cuautitlan
(100118160) 
4:30 p.m.
On the Tensor Product of an Oriented Quantum Algebra with Itself.
David E. Radford*, University of Illinois at Chicago
(100116384) 
5:00 p.m.
Quantum Invariants of Virtual Knots and Links.
Louis H Kauffman*, University of Illinois at Chicago
(100157286)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.3:50 p.m.
Special Session on Extremal Combinatorics, IV
Room G 36, Donald P. Jacobs Center
Organizers:
Dhruv Mubayi, University of Illinois at Chicago mubayi@math.uic.edu
Yi Zhao, University of Illinois at Chicago zhao@math.uic.edu

3:00 p.m.
Random geometric graph diameter threshold in the unit disk.
Robert B. Ellis*, Texas A&M University
Xingde Jia, Texas State UniversitySan Marcos
Jeremy L. Martin, University of Minnesota
Catherine H. Yan, Texas A&M University
(100105391) 
3:30 p.m.
On the abelian sandpile model.
Evelin Toumpakari*, Department of Mathematics, University of Chicago
(100105403)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.5:50 p.m.
Special Session on Fluid Dynamics, Diffusion and Reaction, IV
Room M 177, Technological Institute
Organizers:
Peter S. Constantin, University of Chicago const@cs.uchicago.edu
Leonid V. Ryzhik, University of Chicago ryzhik@math.uchicago.edu

3:00 p.m.
Travelling fronts in a Boussinesq system.
Henri Berestycki*, EHESS
(100135312) 
4:00 p.m.
Advectiondiffusion for cellular flows at high Peclet number.
Alexei Novikov*, Penn State University
George Papanicolaou, Stanford University
Lenya Ryzhik, University of Chicago
(100176233) 
5:00 p.m.
Quenching and Propagation of Combustion Without Ignition Temperature Cutoff.
Andrej Zlatos*, University of Wisconsin  Madison
(100135390)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.5:50 p.m.
Special Session on Codes and Applications, IV
Room G 42, Donald P. Jacobs Center
Organizers:
William C. Huffman, Loyola University of Chicago wch@math.luc.edu
Vera S. Pless, University of Illinois at Chicago pless@math.uic.edu

3:00 p.m.
On Some Graph Theoretic Properties of LDPC Codes.
Hossein PishroNik*, Georgia Institute of Technology
Faramarz Fekri, Georgia Institute of Technology
(100105252) 
3:30 p.m.
Codes on graphs and hypergraphs.
Alexander Barg*, University of Maryland
(100194426) 
4:00 p.m.
Pseudocodewords, cycle codes, and the edge zeta function of graphs.
Ralf Koetter*, University of Illinois at UrbanaChampaign
WenChing W Li, Pennsylvania State University
Pascal O. Vontobel, University of Wisconsin
Judy L. Walker, University of Nebraska
(100194414) 
4:30 p.m.
LDPC codes obtained from quadratic surfaces of finite projective spaces.
Keith E Mellinger*, University of Mary Washington
Amanda Passmore, University of Mary Washington
Jennifer Stovall, University of Mary Washington
(10019439) 
5:00 p.m.
Problems in Combinatorial and Number Theory Related to LDPC Code Construction.
Olgica Milenkovic*, ECE Department, University of Colorado, Boulder
(100194264) 
5:30 p.m.
Results on FiniteField Wavelets and Their Applications to Error Correcting Codes.
Faramarz Fekri*, School of ECE, Georgia Institute of Technology
Farshid Delgosha, School of ECE, Georgia Institute of Technology
Mina Sartipi, School of ECE, Georgia Institute of Technology
(100194360)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.4:55 p.m.
Special Session on Nonlinear Partial Differential Equations and Applications, IV
Room L R3, Technological Institute
Organizers:
GuiQiang Chen, Northwestern University gqchen@math.northwestern.edu
Mikhail Feldman, University of Wisconsin at Madison feldman@math.wisc.edu

3:00 p.m.
The phase transition between chiral nematic and smectic liquid crystals.
Daniel Phillips*, Purdue University, Department of Mathematics
Sookyung Joo, Institute for Mathematics and its Applications (IMA) , University of Minnesota
(100135167) 
3:30 p.m.
Stability of undercompressive shock profiles.
Peter Howard, Texas A. and M.
Kevin Zumbrun*, Indiana University, Bloomington
(100135126) 
4:00 p.m.
Structural properties of viscoelasticity and convergence to polyconvex elastodynamics.
Corrado Lattanzio, Universita de L'Aquila
Athanasios E. Tzavaras*, University of Wisconsin
(100135224) 
4:30 p.m.
Critical Thresholds in Hyperbolic Balance Laws.
Hailiang Liu*, Iowa State University
(100135277)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.5:25 p.m.
Special Session on Geometric Partial Differential Equations, III
Room L R5, Technological Institute
Organizers:
GuiQiang Chen, Northwestern University gqchen@math.northwestern.edu
Jared Wunsch, Northwestern University jwunsch@math.northwestern.edu

3:00 p.m.
The Calder\'on problem with partial data.
Gunther Uhlmann*, University of Washington
(100135115) 
3:30 p.m.
Support Theorems For Generalizations of Radon Tranforms and Inverse Problems.
Antonio C Sa Barreto*, Purdue University
(100135317) 
4:00 p.m.
Picard modular groups in complex hyperbolic spaces.
Gabor Francsics*, Michigan State University
(100135318) 
4:30 p.m.
Integral geometry of tensor fields and the boundary rigidity problem.
Plamen Stefanov*, Purdue University
Gunther Uhlmann, University of Washington
(10015371) 
5:00 p.m.
Harmonic Solutions to Some Fully Nonlinear Second Order PDEs on $\mathbb{R}^2$.
Joseph L Shomberg*, University of Wisconsin  Milwaukee
(100135411)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.5:50 p.m.
Special Session on Computability Theory and Applications, IV
Room G 03, Donald P. Jacobs Center
Organizers:
Robert I. Soare, University of Chicago soare@math.uchicago.edu
Denis R. Hirschfeldt, University of Chicago drh@math.uchicago.edu

3:00 p.m.
The low$_{n}$ and low$_{m}$ r.e.\ degrees are not elementarily equivalent.
Richard A. Shore*, Cornell University
(10010366) 
3:30 p.m.
Minimal wtt degrees and computably enumerable Turing degrees.
Reed Solomon*, University of Connecticut
Rodney Downey, Victoria University at Wellington
(100103122) 
4:00 p.m.
Improving and Proving the SlamanWoodin Conjecture.
Peter Cholak*, University of Notre Dame
Rod Downey, Victoria University (of Wellington, New Zealand)
Leo Harrington, UCBerkeley
(100103118) 
4:30 p.m.
Spectra of relations on the random graph.
Valentina Harizanov, George Washington University
Russell Miller*, Queens College  C.U.N.Y.
(100103218) 
5:00 p.m.
Embedding and Coding Below a 1Generic Degree.
Noam Greenberg*, University of Notre Dame
Antonio Montalban, Cornell University
(10010367) 
5:30 p.m.
Computably Enumerable Algebras, Their Expansions, and Isomorphisms.
Bakhadyr Khoussainov*, The University of Auckland, New Zealand
Steffen Lempp, The University of WisconsinMadison
Theodore A Slaman, Berkeley
(100103283)

3:00 p.m.

Sunday October 24, 2004, 3:00 p.m.5:50 p.m.
Special Session on Solving Polynomial Systems, IV
Room G 43, Donald P. Jacobs Center
Organizers:
Anton Leykin, University of Illinois at Chicago leykin@math.uic.edu
Jan Verschelde, University of Illinois at Chicago jan@math.uic.edu

3:00 p.m.
Genetic Algorithms for zerodimensional ideals.
Ilias S. Kotsireas*, Assistant Professor, Wilfrid Laurier University
(100114221) 
3:30 p.m.
Toric residues and partitions of polytopes.
Amit Khetan, University of Massachusetts, Amherst
Ivan Soprounov*, University of Massachusetts, Amherst
(100114258) 
4:00 p.m.
Break 
4:30 p.m.
Approximate GCD and Factorization of Multivariate Polynomials.
Zhonggang Zeng*, Northeastern Illinois University
(100165232) 
5:00 p.m.
Solving Multivariate Polynomial Systems.
Hong Zhang*, Illinois Institute of Technology and Argonne National Laboratory
(100165146) 
5:30 p.m.
Numerical Jet Geometry of Partial Differential Equations.
Greg J. Reid*, University of Western Ontario
(100135207)

3:00 p.m.