AMS Sectional Meeting Program by Day

Current as of Tuesday, April 12, 2005 15:10:32

Program | Deadlines | Registration/Housing/Etc. | Inquiries: meet@ams.org

2003 Spring Western Section Meeting
San Francisco, CA, May 3-4, 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
  (987-68-08)
- 8:30 a.m.
  Descriptive complexity in classes of inductive Turing machines.
  Mark Burgin*, UCLA
  (987-68-06)
- 9:00 a.m.
  If Intelligence is Uncomputable, Then...
  Peter Kugel*, Boston College
  (987-68-16)
- 9:30 a.m.
  Learning in the limit and experience of generations.
  Mark Burgin*, UCLA
  Allen Klinger, UCLA
  (987-68-31)
- 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
  (987-68-48)
- 10:30 a.m.
  On Asymptotic Decidability of Some Problems Related to Artificial Intelligence.
  Marek A Suchenek*, California State University Dominguez Hills
  (987-03-100)

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
  (987-34-99)
- 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
  (987-34-71)
- 9:00 a.m.
  Bifurcation of almost periodic solutions in difference equations.
  Yoshihiro Hamaya*, Department of Information Science Okayama University of Science
  (987-39-43)
- 10:30 a.m.
  Stability Properties of Nonlinear Volterra Integrodifferential Equations.
  M N Islam*, University of Dayton
  (987-45-57)

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 Kneser-Poulsen conjecture for bounded hyperbolic convex polyhedra.
  Karoly Bezdek*, Cornell University, Dept. of Math., Ithaca NY
  (987-52-112)
- 8:30 a.m.
  The bottleneck conjecture.
  Greg Kuperberg*, UC Davis
  (987-52-129)
- 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
  (987-52-37)
- 10:00 a.m.
  Upper bounds for generalized touching numbers of convex bodies.
  Istvan Talata*, Eotvos University, Budapest
  (987-52-158)
- 10:30 a.m.
  Sphere Packing in Hyperbolic Space.
  Henry Cohn*, Microsoft Research
  Thomas Hales, University of Pittsburgh
  Jacob Lurie, MIT
  Peter Sarnak, Princeton
  (987-52-161)

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
  (987-57-150)
- 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
  (987-65-133)
- 9:00 a.m.
  Topological States of Circular DNA Obtained in Site-Specific Recombination.
  Alexander V Vologodskii*, New York University
  (987-92-139)
- 9:30 a.m.
  Sedimentation dynamics of rigid, knotted filaments.
  Oscar Gonzalez*, University of Texas
  (987-76-190)
- 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
  (987-82-148)
- 10:30 a.m.
  8-bar Tangling Blues.
  G R Buck*, St. Anselm College
  (987-82-199)

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 4-manifolds.
  Alice Chang, Princeton University
  Jie Qing*, UNiversity of California, Santa Cruz
  Paul Yang, Princeton University
  (987-53-169)
- 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
  (987-35-54)
- 10:00 a.m.
  The wave maps equation.
  Daniel Tataru*, UC Berkeley
  (987-35-164)

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 Cohen-Macaulay type.
  Graham J Leuschke, University of Kansas and MSRI
  Roger Wiegand*, University of Nebraska and MSRI
  (987-13-94)
- 8:30 a.m.
  Vanishing of Ext and Tor over Cohen-Macaulay local rings.
  Craig Huneke, University of Kansas
  Liana M Sega*, Mathematical Sciences Research Institute
  Adela N Vraciu, University of Kansas
  (987-13-118)
- 9:00 a.m.
  On a conjecture of Auslander and Reiten.
  Craig Huneke, University of Kansas
  Graham J. Leuschke*, University of Kansas / MSRI
  (987-13-166)
- 9:30 a.m.
  The degree of the Hilbert polynomial of certain Ext modules and its leading coefficient.
  Emanoil Theodorescu*, University of Missouri, Columbia
  (987-13-188)
- 10:00 a.m.
  Realizing cohomology over complete intersections.
  L L Avramov, University of Nebraska-Lincoln/MSRI
  D A Jorgensen*, University of Texas at Arlington/MSRI
  (987-13-168)
- 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
  (987-13-191)

Sunday May 4, 2003, 8:00 a.m.-10:50 a.m.
Special Session on Gromov-Witten 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_{n-1}-singularities.
  Alexander B Givental*, UC Berkeley
  (987-14-103)
- 9:00 a.m.
  Semisimple Frobenius manifolds and higher spin curves.
  Y.-P. Lee*, Univ. of Utah / Princeton U.
  (987-14-149)
- 10:00 a.m.
  Some remarks on Witten's top Chern class.
  Alexander Polishchuk*, Boston University
  (987-14-113)
- 10:30 a.m.
  Witten's top Chern class in K-theory.
  Alessandro Chiodo*, Cambridge University, UK
  (987-14-127)

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
  (987-13-84)
- 9:00 a.m.
  The most singular Schubert variety?
  Alexander Woo*, UC-Berkeley
  (987-14-200)
- 9:30 a.m.
  Castelnuovo-Mumford regularity and line configurations in the projective plane.
  Hal Schenck*, Texas A&M University
  (987-14-180)
- 10:00 a.m.
  Resolutions and Multigraded Regularity.
  Gregory G Smith*, Barnard College
  Diane Maclagan, Stanford University
  (987-13-121)
- 10:30 a.m.
  Stanley Filtrations and Regularity.
  Diane Maclagan*, Stanford University
  Gregory G Smith, Barnard College
  (987-13-120)

Sunday May 4, 2003, 9:00 a.m.-10:40 a.m.
Special Session on Q-Series 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
  (987-05-128)
- 9:30 a.m.
  On the parity of partition functions.
  Bruce C. Berndt*, University of Illinois at Urbana-Champaign
  Ae Ja Yee, University of Illinois at Urbana-Champaign
  Alexandru Zaharescu, University of Illinois at Urbana-Champaign
  (987-11-41)
- 10:00 a.m.
  On a Partition Problem of Richard Stanley.
  George E. Andrews*, The Pennsylvania State University
  (987-11-83)

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
  (987-11-26)
- 10:00 a.m.
  Unramified covers of affine spaces.
  Kiran S. Kedlaya*, University of California, Berkeley
  (987-14-29)

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
(987-13-66)

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
(987-12-198)

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)
  (987-03-15)
- 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
  (987-03-25)
- 4:00 p.m.
  The Concept of Computability.
  Carol E. Cleland*, Philosophy Department, University of Colorado
  (987-03-47)
- 4:30 p.m.
  Hypercomputation in the Real World.
  B. Jack Copeland*, University of Canterbury, New Zealand
  (987-03-126)
- 5:00 p.m.
  Attempts to Compute the Uncomputable.
  Martin D Davis*, UC Berkeley
  (987-03-93)
- 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 Lotka-Volterra Model.
  Shair Ahmad*, University of Texas at San Antonio
  (987-34-68)
- 3:30 p.m.
  Parametric resonance in a predator-prey model.
  Alfonso C Casal, Universidad Politecnica de Madrid
  Alfredo S Somolinos*, Mercy College. Dobbs Ferry, NY.
  (987-34-63)
- 4:00 p.m.
  Fixed Points, Stability, and Three Averages.
  Theodore A Burton*, Southern Illinois University
  (987-34-51)

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 principally-polarized abelian varieties.
  Everett W Howe*, Center for Communications Research, La Jolla
  (987-11-58)
- 4:00 p.m.
  L functions of exponential sums over affinoids.
  Hui June Zhu*, McMaster University
  (987-14-60)
- 5:00 p.m.
  The Zeta function of Algebraic r-cycles: Conjectures and Results.
  C. Douglas Haessig*, UC Irvine
  (987-11-101)

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 Oliveros-Braniff, University of Calgary, Canada
  (987-52-62)
- 3:30 p.m.
  Hyperbolic Regular Polygons with Notched Edges -- A Classification of Tilers.
  Casey Mann*, University of Texas at Tyler
  (987-52-76)
- 4:00 p.m.
  On the Number of Cylinders Touching a Ball.
  Dan P Ismailescu*, Hofstra University
  (987-52-173)
- 4:30 p.m.
  Covering a Strip by Unit Circles.
  G\'abor Fejes T\'oth*, Alfr\'ed R\'enyi Mathematical Institute
  (987-52-157)

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
  (987-60-162)
- 3:30 p.m.
  Computation of ideal shapes using a discretization by Biarcs.
  Jana Smutny*, Swiss Federal Institute of Technology
  (987-65-80)
- 4:00 p.m.
  Tightening knots with {\em Ridgerunner}.
  Jason H Cantarella*, University of Georgia
  Eric Rawdon, Duquesne University
  Michael Piatek, Duquesne University
  (987-53-87)
- 4:30 p.m.
  Simulations of Tight Links.
  John M Sullivan*, Univ. of Ilinois, Urbana
  (987-51-32)
- 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
  (987-54-154)
- 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
  (987-57-185)

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 Quasi-Geostrophic flows.
  Maria E Schonbek*, University of California Santa Cruz
  Tomas P Schonbek, Florida Atlantic University
  (987-35-88)
- 4:00 p.m.
  On smoothly bounded domains covering compact quotients.
  Bun Wong*, UC Riverside
  W-S Cheung, The Univeristy of Hong Kong
  (987-32-197)
- 5:00 p.m.
  Control in the presence of a black box.
  Maciej Zworski*, UC Berkeley
  (987-35-156)

Sunday May 4, 2003, 3:00 p.m.-4:20 p.m.
Special Session on Gromov-Witten 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 homotopy-theoretical Heisenberg group.
  Jack Morava*, Johns Hopkins University
  (987-55-183)
- 3:30 p.m.
  On Gromov-Witten theory for global quotients.
  Ralph M Kaufmann*, Oklahoma State University and Max-Planck-Institute for Mathematics
  (987-14-176)
- 4:00 p.m.
  A Generalization of Spin Orbifold Quantum Cohomology Arising From Quasi-Homogeneous Polynomials.
  Huijun Fan*, MPI in Leipzig, Germany
  Tyler Jarvis, Brigham Young university
  Yongbin Ruan, Wisconsin univ.& Hongkong Univ. Sci.& Tech.
  (987-53-122)