AMS Sectional Meeting Program by Day
Current as of Tuesday, April 12, 2005 15:10:32
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Inquiries: meet@ams.org
2003 Spring Western Section Meeting
San Francisco, CA, May 34, 2003
Meeting #987
Associate secretaries:
Michel L Lapidus, AMS
lapidus@math.ucr.edu,
lapidus@mathserv.ucr.edu
Sunday May 4, 2003

Sunday May 4, 2003, 8:00 a.m.12:00 p.m.
Meeting Registration
Main Lobby (3rd Floor), Thornton Hall

Sunday May 4, 2003, 8:00 a.m.10:50 a.m.
Special Session on Beyond Classical Boundaries of Computability, III
Room 329, Thornton Hall
Organizers:
Mark Burgin, University of California Los Angeles mburgin@math.ucla.edu
Peter Wegner, Brown University pw@cs.brown.edu

8:00 a.m.
On the complexity of real recursive functions.
Manuel Lameiras Campagnolo*, Lisbon University of Technology
(9876808)

8:30 a.m.
Descriptive complexity in classes of inductive Turing machines.
Mark Burgin*, UCLA
(9876806)

9:00 a.m.
If Intelligence is Uncomputable, Then...
Peter Kugel*, Boston College
(9876816)

9:30 a.m.
Learning in the limit and experience of generations.
Mark Burgin*, UCLA
Allen Klinger, UCLA
(9876831)

10:00 a.m.
A formal model of fuzzy computations (preliminary report).
Jiri Wiedermann*, Institute of Computer Science, Academy of Sciences of the Czech Republic, Prague
(9876848)

10:30 a.m.
On Asymptotic Decidability of Some Problems Related to Artificial Intelligence.
Marek A Suchenek*, California State University Dominguez Hills
(98703100)

Sunday May 4, 2003, 8:00 a.m.10:50 a.m.
Special Session on Qualitative Properties and Applications of Functional Equations, III
Room 326, Thornton Hall
Organizers:
Theodore A. Burton, Southern Illinois University at Carbondale taburton@olypen.com

8:00 a.m.
Fixed Points and Controllability in Delay Systems.
Bo Zhang*, Fayetteville State University
(9873499)

8:30 a.m.
Asymptotic behavior of solutions of functional differential equations by Schauder's theorem.
Theodore A. Burton, Northwest Research Institute
Tetsuo Furumochi*, Shimane University
(9873471)

9:00 a.m.
Bifurcation of almost periodic solutions in difference equations.
Yoshihiro Hamaya*, Department of Information Science Okayama University of Science
(9873943)

10:30 a.m.
Stability Properties of Nonlinear Volterra Integrodifferential Equations.
M N Islam*, University of Dayton
(9874557)

Sunday May 4, 2003, 8:00 a.m.10:50 a.m.
Special Session on Efficient Arrangements of Convex Bodies, III
Room 211, Thornton Hall
Organizers:
Dan P. Ismailescu, Hofstra University ismailes@CIMS.nyu.edu
Wlodzimierz Kuperberg, Auburn University kuperwl@auburn.edu

8:00 a.m.
The KneserPoulsen conjecture for bounded hyperbolic convex polyhedra.
Karoly Bezdek*, Cornell University, Dept. of Math., Ithaca NY
(98752112)

8:30 a.m.
The bottleneck conjecture.
Greg Kuperberg*, UC Davis
(98752129)

9:30 a.m.
A Polytopal Generalization of Sperner's coloring Lemma.
Jesus A De Loera*, Univ. of California, Davis
Elisha Peterson, Univ. of Maryland
Francis E. Su, Harvey Mudd College
(9875237)

10:00 a.m.
Upper bounds for generalized touching numbers of convex bodies.
Istvan Talata*, Eotvos University, Budapest
(98752158)

10:30 a.m.
Sphere Packing in Hyperbolic Space.
Henry Cohn*, Microsoft Research
Thomas Hales, University of Pittsburgh
Jacob Lurie, MIT
Peter Sarnak, Princeton
(98752161)

Sunday May 4, 2003, 8:00 a.m.10:50 a.m.
Special Session on Numerical Methods, Calculations and Simulations in Knot Theory and Its Applications, III
Room 327, Thornton Hall
Organizers:
Jorge Alberto Calvo, North Dakota State University jorge_calvo@ndsu.nodak.ed
Kenneth C. Millett, University of California Santa Barbara millett@math.ucsb.edu
Eric J. Rawdon, Duquesne University rawdon@mathcs.duq.edu

8:00 a.m.
On the ropelength of infinite families of knots.
Claus Ernst*, Western Kentucky University
Yuanan Diao, UNCC
(98757150)

8:30 a.m.
The effects of a topoogical consrtaint and excluded volume on the gyration radius of a ring polymer.
Miyuki K Shimamura*, Tokyo, Japan
(98765133)

9:00 a.m.
Topological States of Circular DNA Obtained in SiteSpecific Recombination.
Alexander V Vologodskii*, New York University
(98792139)

9:30 a.m.
Sedimentation dynamics of rigid, knotted filaments.
Oscar Gonzalez*, University of Texas
(98776190)

10:00 a.m.
Numerical simulation of gel electrophoresis of DNA knots.
Giovanni Dietler*, University of Lausanne
Paolo De Los Rios, University of Lausanne
Cedric Weber, University of Lausanne
Marc Fleurant, University of Lausanne
(98782148)

10:30 a.m.
8bar Tangling Blues.
G R Buck*, St. Anselm College
(98782199)

Sunday May 4, 2003, 8:00 a.m.10:40 a.m.
Special Session on PDEs and Applications in Geometry, III
Room 325, Thornton Hall
Organizers:
Qi S. Zhang, University of California Riverside qizhang@math.ucr.edu

8:00 a.m.
On conformally compact Einstein 4manifolds.
Alice Chang, Princeton University
Jie Qing*, UNiversity of California, Santa Cruz
Paul Yang, Princeton University
(98753169)

9:00 a.m.
The Origins of Fractality in Nature and the Singularities of Solutions to PDEs: The Model of the Koch Snowflake Drum.
Michel L. Lapidus*, University of California, Riverside
(9873554)

10:00 a.m.
The wave maps equation.
Daniel Tataru*, UC Berkeley
(98735164)

Sunday May 4, 2003, 8:00 a.m.10:50 a.m.
Special Session on Commutative Algebra, III
Room 429, Thornton Hall
Organizers:
Raymond C. Heitmann, University of Texas at Austin heitmann@math.utexas.edu
Irena Swanson, New Mexico State University iswanson@nmsu.edu

8:00 a.m.
Local rings of bounded CohenMacaulay type.
Graham J Leuschke, University of Kansas and MSRI
Roger Wiegand*, University of Nebraska and MSRI
(9871394)

8:30 a.m.
Vanishing of Ext and Tor over CohenMacaulay local rings.
Craig Huneke, University of Kansas
Liana M Sega*, Mathematical Sciences Research Institute
Adela N Vraciu, University of Kansas
(98713118)

9:00 a.m.
On a conjecture of Auslander and Reiten.
Craig Huneke, University of Kansas
Graham J. Leuschke*, University of Kansas / MSRI
(98713166)

9:30 a.m.
The degree of the Hilbert polynomial of certain Ext modules and its leading coefficient.
Emanoil Theodorescu*, University of Missouri, Columbia
(98713188)

10:00 a.m.
Realizing cohomology over complete intersections.
L L Avramov, University of NebraskaLincoln/MSRI
D A Jorgensen*, University of Texas at Arlington/MSRI
(98713168)

10:30 a.m.
Asymptotic invariants of homomorphisms with applications to the Frobenius endomorphism.
Luchezar L Avramov, University of Nebraska
Srikanth Iyengar, University of Missouri
Claudia Miller*, Syracuse University
(98713191)

Sunday May 4, 2003, 8:00 a.m.10:50 a.m.
Special Session on GromovWitten Theory of Spin Curves and Orbifolds, III
Room 335, Thornton Hall
Organizers:
Tyler Jarvis, Brigham Young University jarvis@math.byu.edu
Takashi Kimura, Boston University kimura@math.bu.edu
Arkady Vaintrob, University of Oregon vaintrob@darkwing.uoregon.edu

8:00 a.m.
nKdV hierarchies and A_{n1}singularities.
Alexander B Givental*, UC Berkeley
(98714103)

9:00 a.m.
Semisimple Frobenius manifolds and higher spin curves.
Y.P. Lee*, Univ. of Utah / Princeton U.
(98714149)

10:00 a.m.
Some remarks on Witten's top Chern class.
Alexander Polishchuk*, Boston University
(98714113)

10:30 a.m.
Witten's top Chern class in Ktheory.
Alessandro Chiodo*, Cambridge University, UK
(98714127)

Sunday May 4, 2003, 8:00 a.m.12:00 p.m.
Exhibit and Book Sale
Room 331, Thornton Hall

Sunday May 4, 2003, 8:30 a.m.10:50 a.m.
Special Session on Combinatorial Commutative Algebra and Algebraic Geometry, III
Room 432, Thornton Hall
Organizers:
Serkan Hosten, San Francisco State University serkan@math.sfsu.edu
Ezra Miller, Mathematical Sciences Research Institute emiller@msri.org

8:30 a.m.
Total positivity and canonical basis in cluster algebras of types $A_1^{(1)}$ and $A_2^{(2)}$.
Paul Sherman, Northeastern University
Andrei Zelevinsky*, Northeastern University
(9871384)

9:00 a.m.
The most singular Schubert variety?
Alexander Woo*, UCBerkeley
(98714200)

9:30 a.m.
CastelnuovoMumford regularity and line configurations in the projective plane.
Hal Schenck*, Texas A&M University
(98714180)

10:00 a.m.
Resolutions and Multigraded Regularity.
Gregory G Smith*, Barnard College
Diane Maclagan, Stanford University
(98713121)

10:30 a.m.
Stanley Filtrations and Regularity.
Diane Maclagan*, Stanford University
Gregory G Smith, Barnard College
(98713120)

Sunday May 4, 2003, 9:00 a.m.10:40 a.m.
Special Session on QSeries and Partitions, III
Room 210, Thornton Hall
Organizers:
Neville Robbins, San Francisco State University robbins@math.sfsu.edu

9:00 a.m.
A reciprocity theorem for certain $q$series found in Ramanujan's lost notebook.
Bruce C. Berndt, University of Illinois
Song Heng Chan, University of Illinois
Boon Pin Yeap, University of Illinois
Ae Ja Yee*, University of Illinois
(98705128)

9:30 a.m.
On the parity of partition functions.
Bruce C. Berndt*, University of Illinois at UrbanaChampaign
Ae Ja Yee, University of Illinois at UrbanaChampaign
Alexandru Zaharescu, University of Illinois at UrbanaChampaign
(9871141)

10:00 a.m.
On a Partition Problem of Richard Stanley.
George E. Andrews*, The Pennsylvania State University
(9871183)

Sunday May 4, 2003, 9:00 a.m.10:40 a.m.
Special Session on Geometry and Arithmetic over Finite Fields, III
Room 409, Thornton Hall
Organizers:
Bjorn Poonen, University of California Berkeley poonen@math.berkeley.edu
Joe P. Buhler, Reed College jpb@reed.edu

9:00 a.m.
Prime values of polynomials.
B. Conrad, Univ. of Michigan
K. Conrad*, UC San Diego
R. Gross, Boston College
(9871126)

10:00 a.m.
Unramified covers of affine spaces.
Kiran S. Kedlaya*, University of California, Berkeley
(9871429)

Sunday May 4, 2003, 11:00 a.m.11:50 a.m.
Invited Address
The Direct Summand Conjecture in dimension three.
Room 201, Science Building
Raymond C Heitmann*, University of Texas at Austin
(9871366)

Sunday May 4, 2003, 2:00 p.m.2:50 p.m.
Invited Address
A problem in symmetric functions arising from phase determination in crystallography.
Room 201, Science Building
Joe P Buhler*, Reed College
(98712198)

Sunday May 4, 2003, 3:00 p.m.6:00 p.m.
Special Session on Beyond Classical Boundaries of Computability, IV
Room 329, Thornton Hall
Organizers:
Mark Burgin, University of California Los Angeles mburgin@math.ucla.edu
Peter Wegner, Brown University pw@cs.brown.edu

3:00 p.m.
A Logical Approach to the Philosophy of Hypercomputation.
Selmer C Bringsjord*, Rensselaer Polytechnic Institute (RPI)
(9870315)

3:30 p.m.
Turing's Thesis, Hume's Problem, and Ockham's Razor: Uncertainty, Simplicity, and Efficiency in Empirical and Formal Reasoning.
Kevin T. Kelly*, Carnegie Mellon University
(9870325)

4:00 p.m.
The Concept of Computability.
Carol E. Cleland*, Philosophy Department, University of Colorado
(9870347)

4:30 p.m.
Hypercomputation in the Real World.
B. Jack Copeland*, University of Canterbury, New Zealand
(98703126)

5:00 p.m.
Attempts to Compute the Uncomputable.
Martin D Davis*, UC Berkeley
(9870393)

5:30 p.m.
Round Table

Sunday May 4, 2003, 3:00 p.m.4:20 p.m.
Special Session on Qualitative Properties and Applications of Functional Equations, IV
Room 326, Thornton Hall
Organizers:
Theodore A. Burton, Southern Illinois University at Carbondale taburton@olypen.com

3:00 p.m.
Extinction, Persistence, and Permanence in a LotkaVolterra Model.
Shair Ahmad*, University of Texas at San Antonio
(9873468)

3:30 p.m.
Parametric resonance in a predatorprey model.
Alfonso C Casal, Universidad Politecnica de Madrid
Alfredo S Somolinos*, Mercy College. Dobbs Ferry, NY.
(9873463)

4:00 p.m.
Fixed Points, Stability, and Three Averages.
Theodore A Burton*, Southern Illinois University
(9873451)

Sunday May 4, 2003, 3:00 p.m.5:40 p.m.
Special Session on Geometry and Arithmetic over Finite Fields, IV
Room 409, Thornton Hall
Organizers:
Bjorn Poonen, University of California Berkeley poonen@math.berkeley.edu
Joe P. Buhler, Reed College jpb@reed.edu

3:00 p.m.
A heuristic explanation of the distribution of Frobenius eigenvalues for principallypolarized abelian varieties.
Everett W Howe*, Center for Communications Research, La Jolla
(9871158)

4:00 p.m.
L functions of exponential sums over affinoids.
Hui June Zhu*, McMaster University
(9871460)

5:00 p.m.
The Zeta function of Algebraic rcycles: Conjectures and Results.
C. Douglas Haessig*, UC Irvine
(98711101)

Sunday May 4, 2003, 3:00 p.m.4:50 p.m.
Special Session on Efficient Arrangements of Convex Bodies, IV
Room 211, Thornton Hall
Organizers:
Dan P. Ismailescu, Hofstra University ismailes@CIMS.nyu.edu
Wlodzimierz Kuperberg, Auburn University kuperwl@auburn.edu

3:00 p.m.
Large transversals to families of unit disks.
T Bisztriczky, University of Calgary, Canada
F Fodor*, University of Szeged, Hungary
D OliverosBraniff, University of Calgary, Canada
(9875262)

3:30 p.m.
Hyperbolic Regular Polygons with Notched Edges  A Classification of Tilers.
Casey Mann*, University of Texas at Tyler
(9875276)

4:00 p.m.
On the Number of Cylinders Touching a Ball.
Dan P Ismailescu*, Hofstra University
(98752173)

4:30 p.m.
Covering a Strip by Unit Circles.
G\'abor Fejes T\'oth*, Alfr\'ed R\'enyi Mathematical Institute
(98752157)

Sunday May 4, 2003, 3:00 p.m.6:10 p.m.
Special Session on Numerical Methods, Calculations and Simulations in Knot Theory and Its Applications, IV
Room 327, Thornton Hall
Organizers:
Jorge Alberto Calvo, North Dakota State University jorge_calvo@ndsu.nodak.ed
Kenneth C. Millett, University of California Santa Barbara millett@math.ucsb.edu
Eric J. Rawdon, Duquesne University rawdon@mathcs.duq.edu

3:00 p.m.
Densely packed knots.
Rhonald Lua, University of Minnesota
Alexander Borovinskiy, UCSF
Alexander Grosberg*, University of Minnesota
(98760162)

3:30 p.m.
Computation of ideal shapes using a discretization by Biarcs.
Jana Smutny*, Swiss Federal Institute of Technology
(9876580)

4:00 p.m.
Tightening knots with {\em Ridgerunner}.
Jason H Cantarella*, University of Georgia
Eric Rawdon, Duquesne University
Michael Piatek, Duquesne University
(9875387)

4:30 p.m.
Simulations of Tight Links.
John M Sullivan*, Univ. of Ilinois, Urbana
(9875132)

5:00 p.m.
Power law for the ideal prime knots.
Piotr Pieranski*, Poznan University of Technology, Poznan, Poland
Sylwester Przybyl, Poznan University of Technology, Poznan, Poland
Justyna Marchwiak, Poznan University of Technology, Poznan, Poland
(98754154)

5:30 p.m.
The Effect of Flexibility on Minimum Ropelength Conformations.
Gregory Buck, Saint Anselm College
Michael Piatek, Duquesne University
Eric Rawdon*, Duquesne University
(98757185)

Sunday May 4, 2003, 3:00 p.m.5:40 p.m.
Special Session on PDEs and Applications in Geometry, IV
Room 325, Thornton Hall
Organizers:
Qi S. Zhang, University of California Riverside qizhang@math.ucr.edu

3:00 p.m.
Asymptotic behavior to Dissipative QuasiGeostrophic flows.
Maria E Schonbek*, University of California Santa Cruz
Tomas P Schonbek, Florida Atlantic University
(9873588)

4:00 p.m.
On smoothly bounded domains covering compact quotients.
Bun Wong*, UC Riverside
WS Cheung, The Univeristy of Hong Kong
(98732197)

5:00 p.m.
Control in the presence of a black box.
Maciej Zworski*, UC Berkeley
(98735156)

Sunday May 4, 2003, 3:00 p.m.4:20 p.m.
Special Session on GromovWitten Theory of Spin Curves and Orbifolds, IV
Room 335, Thornton Hall
Organizers:
Tyler Jarvis, Brigham Young University jarvis@math.byu.edu
Takashi Kimura, Boston University kimura@math.bu.edu
Arkady Vaintrob, University of Oregon vaintrob@darkwing.uoregon.edu

3:00 p.m.
A homotopytheoretical Heisenberg group.
Jack Morava*, Johns Hopkins University
(98755183)

3:30 p.m.
On GromovWitten theory for global quotients.
Ralph M Kaufmann*, Oklahoma State University and MaxPlanckInstitute for Mathematics
(98714176)

4:00 p.m.
A Generalization of Spin Orbifold Quantum Cohomology Arising From QuasiHomogeneous Polynomials.
Huijun Fan*, MPI in Leipzig, Germany
Tyler Jarvis, Brigham Young university
Yongbin Ruan, Wisconsin univ.& Hongkong Univ. Sci.& Tech.
(98753122)
Inquiries: meet@ams.org