AMS International Meeting Full Program

Current as of Tuesday, April 12, 2005 15:09:59

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

Joint AMS-SMM International Meeting
Denton, TX, May 19-22, 1999
Meeting #944

Associate secretaries:
Lesley M Sibner, AMS lsibner@duke.poly.edu

Wednesday May 19, 1999

Wednesday May 19, 1999, 3:00 p.m.-6:00 p.m.
Meeting Registration

Wednesday May 19, 1999, 3:00 p.m.-6:00 p.m.
Exhibits and Book Sale

Wednesday May 19, 1999, 7:00 p.m.-7:30 p.m.
Opening Ceremonies

Wednesday May 19, 1999, 7:30 p.m.-8:30 p.m.
Erd\H os Memorial Lecture
Paul Erd\H os and his favorite problems in number theory.
Ronald L. Graham*, AT\&T Labs
(944-11-417)

Wednesday May 19, 1999, 8:30 p.m.-10:30 p.m.
Gala Reception

Thursday May 20, 1999

Thursday May 20, 1999, 8:00 a.m.-4:00 a.m.
Meeting Registration

Thursday May 20, 1999, 8:00 a.m.-5:00 p.m.
Exhibits and Book Sale

Thursday May 20, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Stochastic Systems and Control, I
Organizers:
Daniel Hernandez-Hernandez, CINVESTAV dher@math.cinvestav.mx
Onesimo Hernandez-Lerma, CINVESTAV ohernand@math.cinvestav.mx
Guillermo Ferreyra, Louisiana State University ferreyra@marais.math.lsu.edu
- 8:30 a.m.
  Recent progress in characterization theorems in white noise analysis.
  Hui-Hsiung Kuo*, Louisiana State University
  Nobuhiro Asai, Nagoya University
  Izumi Kubo, Hiroshima University
  (944-60-147)
- 9:30 a.m.
  Markov control processes with average cost criteria.
  Onesimo Hernandez-Lerma*, CINVESTAV
  (944-93-143)
- 10:00 a.m.
  Stochastic Approach to Estimation Problems for Some Diffrential Equations.
  Pao-Liu Chow*, Wayne State University
  (944-60-109)

Thursday May 20, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Functional Analysis and Its Applications, I
Organizers:
S. Perez-Esteva, UNAM salvador@matcuer.unam.mx
Josefina Alvarez, University of New Mexico jalvarez@nmsu.edu
- 8:30 a.m.
  On Matrix Transformations on some Sequence Spaces.
  Lourdes Palacios*, Universidad Autonoma Metropolitana - Universidad Nacional Autonoma de Mexico
  Hugo Arizmendi, Instituto de Matematicas, Universidad Nacional Autonoma de Mexico
  Angel Carrillo, Instituto de Matematicas, Universidad Nacional Autonoma de Mexico
  (944-46-31)
- 9:00 a.m.
  Every Reasonably Sized Matrix Group is a Subgroup of $S_{\infty}$.
  Robert R. Kallman*, University of North Texas
  (944-46-253)
- 9:30 a.m.
  On the axiomatics of joint spectra.
  Antoni Wawrzy\'nczyk*, Universidad Aut\'onoma Metropolitana - Iztapalapa
  (944-46-82)
- 10:00 a.m.
  Divergence-free multiwavelets.
  Maria C Pereyra*, University of New Mexico
  Joseph D Lakey, New Mexico State University
  (944-41-323)

Thursday May 20, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Continuum Theory (in honor of the 60th birthday of Professor Sam B. Nadler, Jr.), I
Organizers:
Wayne Lewis, Texas Tech University wlewis@math.ttu.edu
Sergio Macias, UNAM macias@servidor.unam.mx
Alejandro Illanes, UNAM imate@redvax1.dgsca.unam.mx
- 8:30 a.m.
  The mathematical work of Professor Sam B. Nadler, Jr.
  Alejandro Illanes*, Universidad Nacional Autonoma de Mexico
  (944-54-325)
- 9:30 a.m.
  Bumping Boundaries Outside Continua.
  Eric L. McDowell*, Berry College
  B. E. Wilder, Berry College
  (944-54-348)
- 10:00 a.m.
  Dendroids,digraphs and posets.
  Victor Neumann-Lara*, Instituto de Matematicas,UNAM
  (944-54-320)

Thursday May 20, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Differential Equations, Nonlinear Analysis, and Numerical Solutions to PDEs, I
Organizers:
John W. Neuberger, University of North Texas jwn@unt.edu
Alfredo C. Nicolas, UAM anc@xanum.uam.mx
- 8:30 a.m.
  A Damped Conservation Law for the Energy Spectrum in Turbulence Theory.
  Ciprian I Foias*, Indiana University
  John W Neuberger, University of North Texas
  (944-76-67)
- 9:00 a.m.
  Generalized Fourier transform for Schroedinger operators with potentials of order zero.
  Shmuel Agmon, The Hebrew University of Jerusalem
  Jaime Cruz-Sampedro*, UDLA-P
  Ira W Herbst, University of Virginia
  (944-35-13)
- 9:30 a.m.
  Morse index and Newton's method for solutions of nonlinear elliptic PDE.
  John M Neuberger*, NAU
  (944-35-14)
- 10:00 a.m.
  The Ginzburg-Landau Functional on a Rectangle with Holes.
  Robert J. Renka*, University of North Texas
  John W. Neuberger, University of North Texas
  (944-65-112)

Thursday May 20, 1999, 8:30 a.m.-10:30 a.m.
Special Session on Algebraic Geometry and Commutative Algebra, I
Organizers:
Javier Elizondo, UNAM javier@math.unam.mx
Xavier Gomez-Mont, CIMAT gmont@fractal.cimat.mx
Alberto Corso, Michigan State University corso@math.msu.edu
David A. Jorgensen, University of Texas at Arlington djorgens@math.uta.edu
- 8:30 a.m.
  On systems of binomials in toric varieties.
  Shalom Eliahou, Universit\'e du Littoral, CALAIS C\'edex, France
  Rafael H Villarreal*, CINVESTAV-IPN, M\'exico
  (944-13-140)
- 9:00 a.m.
  Associated Primes of Toric Initial Ideals.
  Rekha R. Thomas*, Texas A&M University
  Serkan Hosten, George Mason University
  (944-13-311)
- 9:30 a.m.
  Noether normalizations of some subrings of graphs.
  Adri\'an Alc\'antar*, ESFM-IPN, M\'exico
  (944-13-180)
- 10:00 a.m.
  Integral closure, conductors and direct summands.
  Daniel Katz*, University of Kansas
  (944-13-302)

Thursday May 20, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Geometric and Symbolic Dynamical Systems, I
Organizers:
Luca Q. Zamboni, University of North Texas luca@unt.edu
Edgardo Ugalde, University of San Luis Potosi ugalde@cactus.iico.uaslp.mx
- 8:30 a.m.
  Generalization of the Siegel integral formula and asymptotics for length spectra of quadratic differentials.
  William A. Veech*, Rice University
  (944-99-346)
- 9:30 a.m.
  Poisson Statistics of return times.
  Beno\^{\i}t Saussol*, Instituto Superior Tecnico
  (944-58-54)
- 10:00 a.m.
  Return times for minimal sets.
  Sandro Vaienti*, Centre de Physique Theorique
  (944-28-349)

Thursday May 20, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Low Dimensional Topology, I
Organizers:
Mark W. Brittenham, University of North Texas britten@unt.edu
Francisco Gonzalez Acuna, IM-UNAM fico@matem.unam.mx
Luis Valdez-Sanchez, University of Texas at El Paso valdez@math.utep.edu
- 8:30 a.m.
  Minimal Volume Maximal Cusps in Hyperbolic 3-Manifolds.
  Colin Adams*, Williams College
  David Biddle, SUNY-Binghamton
  Carol Gwosdz, University of Dallas
  Kathy Paur, MIT
  Scott Reynolds, Williams College
  (944-57-247)
- 9:00 a.m.
  Genus two 3--manifolds are built from handle number one pieces.
  Eric D Sedgwick*, Oklahoma State University
  (944-57-277)
- 9:30 a.m.
  Quasi-Fuchsian surfaces of arbitrarily high genus.
  Elizabeth Finkelstein*, Hunter College (CUNY)
  (944-57-363)
- 10:00 a.m.
  The geometry of R-covered foliations.
  Danny C Calegari*, UC Berkeley
  (944-57-42)

Thursday May 20, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Stochastic Processes, I
Organizers:
Frederi G. Viens, University of North Texas fviens@unt.edu
Jorge A. Leon, CINVESTAV jleon@math.cinvestav.mx
Juan Ruiz de Chavez, UAM jrch@xanum.uam.mx
- 8:30 a.m.
  Stationary and self-similar processes driven by Levy processes.
  Victor Perez Abreu*, CIMAT
  (944-60-286)
- 9:00 a.m.
  Construction of the Cauchy principal value (CPV) .
  Maria Emilia Caballero*, IMATE-UNAM
  Jean Bertoin, Laboratoire de Probabilites
  (944-60-116)
- 9:30 a.m.
  Some Laws of the Iterated Logarithm for the Generalized Domain of a Gaussian law.
  Steven J. Sepanski*, Saginaw Valley State University
  (944-60-115)
- 10:00 a.m.
  The exit time of Brownian motion from the interior of a parabola.
  Rodrigo Banuelos, Purdue University
  R. Dante DeBlassie*, Texas A&M University
  Robert Smits, Syracuse University
  (944-60-142)

Thursday May 20, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Ring Theory, I
Organizers:
Carlos Signoret-Poillon, UNAM-UAM casi@xanum.uam.mx
Sergio Lopez-Permouth, Ohio University slopez@bing.math.ohiou.edu
Ricardo Alfaro, University of Michigan-Flint ralfaro@umich.edu
- 8:30 a.m.
  Equations in modules and chain conditions.
  John Dauns*, Tulane University
  (944-16-234)
- 9:00 a.m.
  Preinjective modules and finite representation type of Artinian rings.
  Nguyen V. Dung*, Ohio University
  (944-16-250)
- 9:30 a.m.
  $\pi$-regularity of band graded rings, Munn rings, and inverse semigroup rings.
  Hema Gopalakrishnan*, Texas A & M University
  (944-16-225)
- 10:00 a.m.
  On FI-Extending Modules and Rings.
  Gary F. Birkenmeier, University of Southwestern Louisiana
  Bruno J. Mueller, McMaster University
  S. Tariq Rizvi*, The Ohio State University
  (944-16-377)

Thursday May 20, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Noncommutative Geometry, Quantum Groups, and Applications, I
Organizers:
Micho Durdevich, UNAM micho@math.unam.mx
Hanna Ewa Makaruk, Los Alamos National Laboratory hanna@t13.lanl.gov
Robert M. Owczarek, Los Alamos National Laboratory rmo@t13.lanl.gov
- 8:30 a.m.
  Non-Commutative Geometry and Twists.
  Arthur M Jaffe*, Harvard University
  (944-51-238)
- 9:30 a.m.
  Quantum Symmetry in Transverse Differential Geometry.
  Alain Connes, The Ohio State University
  Henri Moscovici*, The Ohio State University
  (944-53-344)

Thursday May 20, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Combinatorics and Combinatorial Geometry, I
Organizers:
Jorge Urrutia, IMATE-UNAM and University of Ottawa jorge@site.uottawa.ca
Wlodzimierz Kuperberg, Auburn University kuperwl@mail.auburn.edu
- 8:30 a.m.
  Equality case in sums of distinct congruence classes.
  Llano-Perez Bernardo*, Universidad Nacional Aut\'onoma de M\'exico
  (944-05-392)
- 9:10 a.m.
  On the Existence of Trichromatic Triangles among 3-edge Colorings of $K_{n}$.
  Bernardo M Abrego, Rutgers University
  Jozsef Beck, Rutgers University
  Silvia Fernandez-Merchant*, Rutgers University
  (944-05-299)
- 9:50 a.m.
  Optimal Floodlight Illumination of Stages.
  Felipe Contreras*, University of Ottawa
  Jurek Czyzowicz, Universit\'e du Qu\'ebec \`a Hull
  Eduardo Rivera-Campo, Universidad Aut\'onoma Metropolitana
  Jorge Urrutia, University of Ottawa
  (944-05-386)

Thursday May 20, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Smooth Dynamical Systems, I
Organizers:
David A. Delatte, University of North Texas delatte@unt.edu
Dan Mauldin, University of North Texas mauldin@unt.edu
Jose Seade, UNAM jseade@math.unam.mx
Mariusz Urbanski, University of North Texas urbanski@unt.edu
Alberto Verjovsky, UNAM alberto@math.unam.mx
- 8:30 a.m.
  Talk # 20 by {\bf William Veech} is held jointly with this session in Room 255, ESSC.
- 9:30 a.m.
  Hyperbolicity and Astigmatism in High- dimensional Focusing Billiards.
  Leonid A Bunimovich*, Georgia Tech
  (944-58-137)
- 10:00 a.m.
  Chaotic billiard dynamics on surfaces of constant curvature.
  Eugene Gutkin*, USC
  (944-58-269)

Thursday May 20, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Algebraic Topology, I
Organizers:
Frederick R. Cohen, University of Rochester cohf@poincare.math.rochester.edu
Samuel Gitler, University of Rochester gitler@troi.cc.rochester.edu
Carlos Prieto, UNAM cprieto@math.unam.mx
- 8:30 a.m.
  New Techniques for Understanding the Cohomology of Simple Groups.
  R. James Milgram*, Stanford University
  (944-55-220)
- 9:30 a.m.
  Isogenies and the $K(2)$-local sphere.
  Charles W Rezk*, Northwestern University
  (944-55-340)
- 10:00 a.m.
  An Application of The Thomified Eilenberg-Moore spectral sequence.
  Douglas C. Ravenel*, University of Rochester
  (944-55-284)

Thursday May 20, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Differential Geometry and Geodesics, I
Organizers:
Phillip E. Parker, Wichita State University pparker@twsuvm.uc.twsu.edu
Lilia Del Riego, Univ Auto de San Luis Potosi lilia@biblos.dgb.uaslp.mx
- 8:30 a.m.
  Null generators of Cauchy horizons.
  John K Beem*, University of Missouri-Columbia
  Andrzej Kr\'olak, Polish Academy of Sciences
  (944-53-15)
- 9:00 a.m.
  Discussion.
- 9:30 a.m.
  Particle Geodesics and Spectra in the Spacetime Tangent Bundle.
  Howard E. Brandt*, Army Research Laboratory
  (944-53-33)
- 10:00 a.m.
  Causality-generated topology for future boundaries of spacetimes.
  Steven G. Harris*, Saint Louis University
  (944-53-267)

Thursday May 20, 1999, 9:00 a.m.-10:20 a.m.
Special Session on Representation Theory of Algebras, I
Organizers:
Jose A. de la Pena, UNAM jap@penelope.matem.unam.mx
Christof Geiss, UNAM christof@math.unam.mx
Birge Huisgen-Zimmerman, University of California at Santa Barbara birge@math.ucsb.edu
- 9:00 a.m.
  The algebras with discrete derived categories.
  Dieter Vossieck*, Instituto de Matematicas, UNAM
  (944-16-319)
- 10:00 a.m.
  Derived-tame algebras.
  Jose A. de la Pena*, UNAM
  (944-16-350)

Thursday May 20, 1999, 11:00 a.m.-12:00 p.m.
Invited Address
Parametrization of Modules.
Raymundo Bautista*, Instituto de Matem\'aticas, UNAM
(944-16-318)

Thursday May 20, 1999, 1:00 p.m.-4:30 p.m.
Special Session on Noncommutative Geometry, Quantum Groups, and Applications, II
Organizers:
Micho Durdevich, UNAM micho@math.unam.mx
Hanna Ewa Makaruk, Los Alamos National Laboratory hanna@t13.lanl.gov
Robert M. Owczarek, Los Alamos National Laboratory rmo@t13.lanl.gov
- 1:00 p.m.
  Classification of Integration Patterns on $\mathbb{R}^{1\vert 1}$.
  Oscar A. Sanchez-Valenzuela*, CIMAT
  Carles Victoria-Monge, UPC-Barcelona
  (944-58-149)
- 2:00 p.m.
  Lattice gauge field theory and skein modules.
  Douglas Bullock, Boise State University
  Charles Frohman, University of Iowa
  Joanna Kania-Bartoszynska*, Boise State University
  (944-81-262)
- 2:50 p.m.
  Homotopy quantization of skein modules.
  Jozef H Przytycki*, GWU
  (944-57-309)
- 3:40 p.m.
  Exotic traces.
  Mariusz Wodzicki*, University of California at Berkeley
  (944-47-342)

Thursday May 20, 1999, 1:00 p.m.-4:20 p.m.
Special Session on Smooth Dynamical Systems, II
Organizers:
David A. Delatte, University of North Texas delatte@unt.edu
Dan Mauldin, University of North Texas mauldin@unt.edu
Jose Seade, UNAM jseade@math.unam.mx
Mariusz Urbanski, University of North Texas urbanski@unt.edu
Alberto Verjovsky, UNAM alberto@math.unam.mx
- 1:00 p.m.
  Natural measures on the unstable and invariant manifolds in open billiards.
  Peter A. Richardson*, University of North Texas
  (944-58-407)
- 1:30 p.m.
  Complex Schottky groups and Limit Sets.
  Guillermo Sienra*, UNAM
  (944-58-288)
- 2:00 p.m.
  Some holomorphic dynamical systems determined by covering spaces.
  Kevin M. Pilgrim*, Univ. of Missouri, Rolla
  (944-58-20)
- 2:30 p.m.
  Schottky groups on higher dimensional complex projective spaces.
  Jose A Seade*, Instituto de Matematicas, UNAM
  Alberto S. Verjovsky, Instituto de Matematicas, UNAM
  (944-32-102)
- 3:00 p.m.
  Higher dimensional complex Kleinian groups via twistor theory.
  Alberto S. Verjovsky*, Instituto de Matematicas, UNAM
  Jose A. Seade, Instituto de Matematicas, UNAM
  (944-32-103)
- 3:30 p.m.
  Some connectedness properties of Julia sets.
  Irving N Baker, Imperial College UK
  Patricia Dominguez*, Universidad Autonoma de Puebla, Mx.
  (944-30-95)
- 4:00 p.m.
  Distribution of return times for rational maps.
  Nicolai T.A. Haydn*, University of Southern California
  (944-58-289)

Thursday May 20, 1999, 2:00 p.m.-4:20 p.m.
Special Session on Stochastic Systems and Control, II
Organizers:
Daniel Hernandez-Hernandez, CINVESTAV dher@math.cinvestav.mx
Onesimo Hernandez-Lerma, CINVESTAV ohernand@math.cinvestav.mx
Guillermo Ferreyra, Louisiana State University ferreyra@marais.math.lsu.edu
- 2:00 p.m.
  Reflected Diffusions in Polyhedral Domains and a model of Generalized Processor Sharing.
  Kavita Ramanan*, Bell Laboratories, Lucent Technologies
  Martin Reiman, Bell Laboratories, Lucent Technologies
  (944-60-322)
- 2:30 p.m.
  Sample-Path Average Cost Optimality for Semi-Markov Control Processes on Borel Sapaces: Unbounded Costs and Mean Holding Times.
  Oscar Vega-Amaya*, Universidad de Sonora
  Fernando Luque-V\'asquez, Universidad de Sonora
  (944-93-170)
- 3:00 p.m.
  Discrete-time stochastic control problems in the gambling industry.
  W. George Cochran*, Louisiana State Univ.
  (944-93-359)
- 3:30 p.m.
  New Estimates of Stability in some Queues and Insurance Risk Models .
  Evgueni Gordienko*, UAM-I
  (944-93-308)
- 4:00 p.m.
  Adaptive Policies for Discrete-Time Markov Control Procesess with Unbounded Costs under Average Criterion.
  Adolfo Minj\'arez-Sosa*, Universidad de Sonora
  (944-93-169)

Thursday May 20, 1999, 2:00 p.m.-3:50 p.m.
Special Session on Functional Analysis and Its Applications, II
Organizers:
S. Perez-Esteva, UNAM salvador@matcuer.unam.mx
Josefina Alvarez, University of New Mexico jalvarez@nmsu.edu
- 2:00 p.m.
  Variational Datta Fitting.
  Jose L Martinez Morales*, Instituto de Matem\'aticas, UNAM
  (944-65-08)
- 2:30 p.m.
  Existence of extremals for some discontinuous functionals of geometric function theory.
  Michael D. O'Neill*, UTEP
  Robert E. Thurman, UTEP
  (944-30-312)
- 3:00 p.m.
  Compactness in $L^{p}$-subspaces of Holomorphic Functions.
  Jos\'e A. Canavati, Centro de Investigaci\'on en Matem\'aticas
  Fernando Galaz-Fontes*, Centro de Investigaci\'on en Matem\'aticas
  (944-46-161)
- 3:30 p.m.
  Some Characterizations of Q-algebras.
  Hugo Arizmendi*, Instituto de Matematicas, Universidad Nacional Autonoma de Mexico
  Vesko Valov, University of Swaziland
  (944-46-45)

Thursday May 20, 1999, 2:00 p.m.-4:20 p.m.
Special Session on Continuum Theory (in honor of the 60th birthday of Professor Sam B. Nadler, Jr.), II
Organizers:
Wayne Lewis, Texas Tech University wlewis@math.ttu.edu
Sergio Macias, UNAM macias@servidor.unam.mx
Alejandro Illanes, UNAM imate@redvax1.dgsca.unam.mx
- 2:00 p.m.
  The Life and Times of Sam B. Nadler,Jr.
  Thelma R West*, University of Southwestern Louisiana
  (944-01-193)
- 2:30 p.m.
  Problems on hyperspace retractions .
  Janusz J. Charatonik*, Universidad Nacional Autonoma de Mexico
  W\l odzimierz J. Charatonik, Universidad Nacional Autonoma de Mexico
  (944-54-177)
- 3:00 p.m.
  Inverse Limits on $[0,1]$ Using Piecewise Linear Unimodal Bonding Maps, II.
  W. T. Ingram*, University of Missouri - Rolla
  (944-54-174)
- 3:30 p.m.
  A degree of non-local connectedness.
  Janusz J. Charatonik, Universidad Nacional Autonoma de Mexico
  W\l odzimierz J. Charatonik*, Universidad Nacional Autonoma de Mexico
  (944-54-176)
- 4:00 p.m.
  Expansive Homeomorphisms and Invariant Cantor Sets.
  Christopher G Mouron*, University of Delaware
  (944-54-283)

Thursday May 20, 1999, 2:00 p.m.-4:20 p.m.
Special Session on Differential Equations, Nonlinear Analysis, and Numerical Solutions to PDEs, II
Organizers:
John W. Neuberger, University of North Texas jwn@unt.edu
Alfredo C. Nicolas, UAM anc@xanum.uam.mx
- 2:00 p.m.
  An inverse function theorem and applications.
  Alfonso Castro*, University of Texas at San Antonio.
  (944-35-34)
- 2:30 p.m.
  Hidden Ground States.
  Henry A Warchall*, University of North Texas
  Fred B Weissler, Universite Paris XIII
  (944-35-65)
- 3:00 p.m.
  Remarks on Blow-up in Nonlinear Wave and Kirchhoff Equations.
  Jorge A. Esquivel-Avila*, Universidad Autonoma Metropolitana
  (944-35-30)
- 3:30 p.m.
  On the construction of the couple coefficients for the two block AKNS system.
  Gulmaro Corona Corona*, UAMA, Depto de Ciencias Basicas
  (944-35-07)
- 4:00 p.m.
  Aubry-Mather theory for PDE and pseudodifferential operators.
  Rafael de la Llave*, Univ. of Texas at Austin
  (944-35-129)

Thursday May 20, 1999, 2:00 p.m.-4:30 p.m.
Special Session on Algebraic Geometry and Commutative Algebra, II
Organizers:
Javier Elizondo, UNAM javier@math.unam.mx
Xavier Gomez-Mont, CIMAT gmont@fractal.cimat.mx
Alberto Corso, Michigan State University corso@math.msu.edu
David A. Jorgensen, University of Texas at Arlington djorgens@math.uta.edu
- 2:00 p.m.
  On low rank algebraic vector bundles.
  N. Mohan Kumar, Washington University
  Chris Peterson*, Washington University
  A. Prabhakar Rao, University of Missouri - St. Louis
  (944-14-341)
- 2:30 p.m.
  Depth for complexes, and intersection theorems.
  Srikanth B Iyengar*, University of Missouri
  (944-13-159)
- 3:00 p.m.
  Refinements of a Conjecture of Nagata.
  Brian Harbourne*, University of Nebraska-Lincoln
  (944-14-292)
- 3:40 p.m.
  On the torsion freeness of symmetric powers of ideals.
  Alexandre Tchernev*, University of Missouri - Columbia
  (944-13-330)
- 4:10 p.m.
  Fat point ideals for 8 or fewer points of ${\bf P}^2$.
  Brian Harbourne, University of Nebraska
  Sandeep Holay, Southeast Community College
  Stephanie Fitchett*, Duke University
  (944-14-313)

Thursday May 20, 1999, 2:00 p.m.-4:20 p.m.
Special Session on Geometric and Symbolic Dynamical Systems, II
Organizers:
Luca Q. Zamboni, University of North Texas luca@unt.edu
Edgardo Ugalde, University of San Luis Potosi ugalde@cactus.iico.uaslp.mx
- 2:00 p.m.
  On Two-Sided Infinite Fixed Points of Morphisms and the Equation h(xy) = yx in finite words.
  Jeffrey Shallit, Department of Computer Science, University of Waterloo
  Ming-wei Wang*, Department of Computer Science, University of Waterloo
  (944-68-97)
- 2:30 p.m.
  About sturmian words and morphisms.
  Adel Guerziz*, University of Picardie
  (944-05-397)
- 3:00 p.m.
  Algebraic presentation of good finitary isomorphisms of Markov shifts.
  Ricardo Gomez*, University of Maryland
  (944-58-358)
- 3:30 p.m.
  Automorphisms of Graphs and Surfaces.
  Jerome E Los, INLN (Nice, France)
  Zbigniew H Nitecki*, Tufts University
  (944-58-40)
- 4:00 p.m.
  Factors of Markov Subshifts.
  Anthony N. Quas*, University of Memphis
  Paul B. Trow, University of Memphis
  (944-58-424)

Thursday May 20, 1999, 2:00 p.m.-4:20 p.m.
Special Session on Low Dimensional Topology, II
Organizers:
Mark W. Brittenham, University of North Texas britten@unt.edu
Francisco Gonzalez Acuna, IM-UNAM fico@matem.unam.mx
Luis Valdez-Sanchez, University of Texas at El Paso valdez@math.utep.edu
- 2:00 p.m.
  Comparing Heegaard and JSJ structures of orientable 3-manifolds.
  Martin G Scharlemann*, University of California, Santa Barbara
  Jennifer Schultens, Emory University
  (944-57-205)
- 2:30 p.m.
  Length multiplicities of hyperbolic 3-manifolds.
  Joseph D Masters*, University of Texas-- Austin
  (944-57-139)
- 3:00 p.m.
  Abelian subgroup separability of Haken $3$-manifolds.
  Emily Hamilton*, Emory University
  (944-57-287)
- 3:30 p.m.
  Normal forms of generating pairs for Fuchsian and related groups$\strut$.
  Arturo F. Ram\'irez*, CIMAT
  Francisco Gonz\'alez-Acu\~na, IMATE, UNAM
  (944-20-194)
- 4:00 p.m.
  Seifert fibered surgeries on hyperbolic knots.
  Cameron McA Gordon*, University of Texas at Austin
  John Luecke, University of Texas at Austin
  (944-57-406)

Thursday May 20, 1999, 2:00 p.m.-4:20 p.m.
Special Session on Stochastic Processes, II
Organizers:
Frederi G. Viens, University of North Texas fviens@unt.edu
Jorge A. Leon, CINVESTAV jleon@math.cinvestav.mx
Juan Ruiz de Chavez, UAM jrch@xanum.uam.mx
- 2:00 p.m.
  Monte Carlo Methods for Stochastic Differential Equations.
  Philip Protter*, Purdue University
  (944-60-155)
- 2:30 p.m.
  Self-Normalized Martingales: Exponential Inequalities and Moments.
  Victor H de la Pe\~na*, Columbia University
  Michael J Klass, UC Berkeley
  Tze L Lai, Stanford University
  (944-60-166)
- 3:00 p.m.
  On Convergence Theorems for Quantiles.
  Jose M Gonzalez-Barrios*, IIMAS, UNAM
  Raul Rueda, IIMAS, UNAM
  (944-60-27)
- 4:00 p.m.
  Conditional laws and dominating points.
  Ana Meda*, Facultad de Ciencias, UNAM
  (944-60-120)

Thursday May 20, 1999, 2:00 p.m.-4:20 p.m.
Special Session on Ring Theory, II
Organizers:
Carlos Signoret-Poillon, UNAM-UAM casi@xanum.uam.mx
Sergio Lopez-Permouth, Ohio University slopez@bing.math.ohiou.edu
Ricardo Alfaro, University of Michigan-Flint ralfaro@umich.edu
- 2:00 p.m.
  On the lattices of natural and conatural classes in R-mod.
  Alejandro Alvarado*, Universidad Nacional Autonoma de Mexico
  Hugo Alberto Rincon-Mejia, Universidad Nacional Autonoma de Mexico
  Jose Rios, Universidad Nacional Autonoma de Mexico
  (944-16-96)
- 2:30 p.m.
  On Linear Filters and Torsion Theories in $\sigma [M]$.
  Saul Diaz-Alvarado*, Universidad Autonoma del Estado de Mexico
  Jose Rios, Instituto de Matematicas, UNAM
  (944-16-184)
- 3:00 p.m.
  The lattice of pre-natural classes of modules.
  Yiqiang Zhou*, Memorial University of Newfoundland
  (944-16-186)
- 3:30 p.m.
  The lattice structure of preradicals.
  Francisco Raggi*, Instituto de Matematicas, UNAM
  Hugo Rincon, Facultad de Ciencias, UNAM
  Jose Rios, Instituto de Matematicas, UNAM
  Carlos Signoret, Depto. de Matematicas, UAM-I
  (944-16-315)
- 4:00 p.m.
  On the nilpotence of the $\tau$-closed prime radical in rings with $\tau$-Krull dimension.
  Toma Albu, University of Bucharest
  G\"{u}nter R Krause*, University of Manitoba
  Mark L Teply, University of Wisconsin-Milwaukee
  (944-16-229)

Thursday May 20, 1999, 2:00 p.m.-3:50 p.m.
Special Session on Combinatorics and Combinatorial Geometry, II
Organizers:
Jorge Urrutia, IMATE-UNAM and University of Ottawa jorge@site.uottawa.ca
Wlodzimierz Kuperberg, Auburn University kuperwl@mail.auburn.edu
- 2:00 p.m.
  Rigity of Hamming spaces and Mastermind game.
  Grigori A. Kabatianski*, Texas A\&M University
  (944-05-391)
- 2:40 p.m.
  Algorithms to Tile the Infinite Grid with Finite Clusters.
  Mario Szegedy*, ATT Research
  (944-51-260)
- 3:20 p.m.
  Packing 12, 13 and 19 equal circles in a circle.
  Ferenc Fodor*, Auburn University
  (944-52-182)

Thursday May 20, 1999, 2:00 p.m.-4:20 p.m.
Special Session on Algebraic Topology, II
Organizers:
Frederick R. Cohen, University of Rochester cohf@poincare.math.rochester.edu
Samuel Gitler, University of Rochester gitler@troi.cc.rochester.edu
Carlos Prieto, UNAM cprieto@math.unam.mx
- 2:00 p.m.
  $K$ theoretic Adams spectral sequence and the exponent of the stable homotopy groups of spheres.
  Jesus Gonzalez*, CINVESTAV - IPN
  (944-55-80)
- 2:30 p.m.
  Homotopy exponents of mod-$2^{r}$ Moore spaces.
  Stephen D. Theriault*, University of Illinois at Chicago
  (944-55-343)
- 3:00 p.m.
  From Representation Theory to Homotopy Groups.
  Donald M. Davis*, Lehigh University
  (944-55-12)
- 3:30 p.m.
  On Natural Coalgebra Decompositions of Tensor Algebras and Natural Decompositions of Loop Suspensions.
  Jie Wu*, University of Pennsylvania
  Paul Selick, University of Toronto
  (944-55-26)
- 4:00 p.m.
  $R$-Quillen theorems.
  Calin Popsecu*, Universit� Catholique de Louvain
  (944-55-89)

Thursday May 20, 1999, 2:00 p.m.-4:20 p.m.
Special Session on Complex Analysis, I
Organizers:
E. Ramirez de Arellano, CINVESTAV eramirez@math.cinvestav.mx
John E. Fornaess, University of Michigan, Ann Arbor fornaess@math.lsa.umich.edu
- 2:00 p.m.
  On equivalence of certain sufficient conditions for global regularity of the d-bar Neumann problem.
  Emil J. Straube*, Texas A&M University
  (944-32-356)
- 2:30 p.m.
  Equivalence of Condition R and Existence of Global Smooth Linear/Solution Operators of the $\overline{\partial} d$-Equation on Smoothly Bounded Pseudoconvex Domains in $C^n$.
  Norberto Salinas*, University of Kansas
  (944-47-185)
- 3:00 p.m.
  Hypoellipticity on CR manifolds.
  Joseph J. Kohn*, Princeton University
  (944-32-420)
- 3:30 p.m.
  Polynomial hulls and an optimization problem.
  Marshall A Whittlesey*, Texas A&M University
  (944-32-374)
- 4:00 p.m.
  Bergman Space on Tube Domains and Commuting Toeplitz Operators.
  Nikolai Vasilevski, CINVESTAV-IPN
  Enrique Ramirez de Arellano*, CINVESTAV-IPN
  (944-32-191)

Thursday May 20, 1999, 2:00 p.m.-4:20 p.m.
Special Session on Differential Geometry and Geodesics, II
Organizers:
Phillip E. Parker, Wichita State University pparker@twsuvm.uc.twsu.edu
Lilia Del Riego, Univ Auto de San Luis Potosi lilia@biblos.dgb.uaslp.mx
- 2:00 p.m.
  Volume Comparison on Pseudo-Riemannian Manifolds.
  Paul E Ehrlich*, University of Florida
  (944-53-24)
- 2:30 p.m.
  Discussion.
- 3:00 p.m.
  A Note on the pseudo-Riemnnian Osserman problem.
  Maria E. Vazquez-Abal*, Univ. Santiago de Compostela (Spain)
  Eduardo Garcia-Rio, Univ. Santiago de Compostela (Spain)
  Demir N. Kupeli, Middle East Technical University (Turkey)
  Ramon Vazquez-Lorenzo, Univ. Santiago de Compostela (Spain)
  (944-53-92)
- 3:30 p.m.
  Geodesic completeness for semiRiemannian transverse structures on foliations.
  Alberto Candel, California Institute of Technology
  Raul Quiroga*, CINVESTAV-IPN
  (944-53-163)
- 4:00 p.m.
  Functional Geodesics and Gravitational Fields.
  Hernando Quevedo*, Instituto de Ciencias Nucleares UNAM
  (944-83-413)

Thursday May 20, 1999, 2:30 p.m.-4:20 p.m.
Special Session on Representation Theory of Algebras, II
Organizers:
Jose A. de la Pena, UNAM jap@penelope.matem.unam.mx
Christof Geiss, UNAM christof@math.unam.mx
Birge Huisgen-Zimmerman, University of California at Santa Barbara birge@math.ucsb.edu
- 2:00 p.m.
  Global dimension and characteristic independence.
  Edward L Green, Virginia Tech University
  Oyvind Solberg, University of Trondheim, Norway
  Dan Zacharia*, Syracuse University
  (944-16-212)
- 2:30 p.m.
  Brauer tree algebras and universal deformation rings.
  Frauke M Bleher*, Southern Illinois University
  Ted Chinburg, University of Pennsylvania
  (944-16-236)
- 3:00 p.m.
  Gr\"obner Bases associated to bases of finite modules.
  Maria A. Avi\~n\'o*, Universidad Nacional Autonoma de Mexico
  Luis D. Garcia, Universidad Nacional Autonoma de Mexico
  (944-16-239)
- 3:30 p.m.
  The Uniserial Geometry of Multiserial Algebras.
  Brian J Jue*, U.C. Santa Barbara
  (944-16-355)
- 4:00 p.m.
  The Upper Annihilating Series of a Finite Endomorphism Ring.
  Mar\'ia Alicia Avi\~n\'o, Facultad de Ciencias, UNAM
  Marcos Zyman*, Facultad de Ciencias, UNAM
  (944-16-393)

Thursday May 20, 1999, 5:00 p.m.-6:00 p.m.
Invited Address
Gradient systems in finite and infinite dimensions.
Jack K. Hale*, Georgia Institute of Technology
(944-34-423)

Friday May 21, 1999

Friday May 21, 1999, 8:00 a.m.-5:00 p.m.
Exhibits and Book Sale

Friday May 21, 1999, 8:00 a.m.-4:00 p.m.
Meeting Registration

Friday May 21, 1999, 8:00 a.m.-10:20 a.m.
Special Session on Smooth Dynamical Systems, III
Organizers:
David A. Delatte, University of North Texas delatte@unt.edu
Dan Mauldin, University of North Texas mauldin@unt.edu
Jose Seade, UNAM jseade@math.unam.mx
Mariusz Urbanski, University of North Texas urbanski@unt.edu
Alberto Verjovsky, UNAM alberto@math.unam.mx
- 8:00 a.m.
  Hyperbolicity and KAM bottles in Driven Lorentz Gas.
  Maciej P. Wojtkowski*, Univeristy of Arizona
  (944-58-389)
- 8:30 a.m.
  Invariant manifolds associated to non-resonant subspaces.
  Rafael de la Llave*, Univ. of Texas at Austin
  (944-58-131)
- 9:00 a.m.
  Lagrangian Flows: The Dynamics of globally minimizing orbits.
  Gonzalo Contreras, CIMAT
  Jorge Delgado, UFF-Brazil
  Renato Iturriaga*, CIMAT
  (944-58-101)
- 9:30 a.m.
  Lagrangian Graphs and Ma\~n\'e's Critical Values.
  Gonzalo Contreras*, CIMAT
  Renato Iturriaga, CIMAT
  Gabriel Paternain, CMAT-Uruguay
  Miguel Paternain, CMAT-Uruguay
  (944-58-272)
- 10:00 a.m.
  Finsler Metrics and Action Potentials.
  Renato Iturriaga, CCIMAT
  Hector Sanchez-Morgado*, Instituto de Matematicas. UNAM
  (944-58-93)

Friday May 21, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Stochastic Systems and Control, III
Organizers:
Daniel Hernandez-Hernandez, CINVESTAV dher@math.cinvestav.mx
Onesimo Hernandez-Lerma, CINVESTAV ohernand@math.cinvestav.mx
Guillermo Ferreyra, Louisiana State University ferreyra@marais.math.lsu.edu
- 8:30 a.m.
  Recent Advances in Identification and Adaptive Control of Some Stochastic Systems.
  Bozenna Pasik-Duncan*, University of Kansas
  (944-93-276)
- 9:30 a.m.
  One HJB equation with nonlinear boundary conditions.
  Angel Soriano*, IMATE-UNAM
  (944-49-63)
- 10:00 a.m.
  On the Value Function for Some Stochastic Control Problem.
  Jesus A Pascal*, Universidad del Zulia, Venezuela
  (944-93-219)

Friday May 21, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Functional Analysis and Its Applications, III
Organizers:
S. Perez-Esteva, UNAM salvador@matcuer.unam.mx
Josefina Alvarez, University of New Mexico jalvarez@nmsu.edu
- 8:30 a.m.
  Some aspects of normal structure in Banach spaces.
  Helga Fetter*, Centro de Investigaci\'on en Matem\'aticas
  Berta Gamboa de Buen, Centro de Investigaci\'on en Matem\'aticas
  (944-46-76)
- 9:00 a.m.
  Completeness and regulariry of inductive limits.
  Carlos Bosch*, Instituto Tecnologico Autonomo de Mexico and Washington State University
  Jan Kucera, Washington State University
  (944-46-111)
- 9:30 a.m.
  Normed Barrelled Spaces.
  Christopher E. Stuart*, Eastern New Mexico University
  (944-46-64)
- 10:00 a.m.
  Polynomial convergence of sequences in Banach spaces.
  Fernando Bombal, Universidad Complutense de Madrid
  Maite Fernandez-Unzueta*, Centro de Investigacion en Matematicas
  (944-46-85)

Friday May 21, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Continuum Theory (in honor of the 60th birthday of Professor Sam B. Nadler, Jr.), III
Organizers:
Wayne Lewis, Texas Tech University wlewis@math.ttu.edu
Sergio Macias, UNAM macias@servidor.unam.mx
Alejandro Illanes, UNAM imate@redvax1.dgsca.unam.mx
- 8:30 a.m.
  Local Conectedness and Unicoherence at Subcontinua.
  Deborah Oliveros*, Instituto de Matem\'aticas
  Isabel Puga, Facultad de Ciencias U.N.A.M.
  (944-54-200)
- 9:00 a.m.
  Boundaries of preimages of Siegel disks of polynomials.
  James T Rogers, Jr.*, Tulane University
  (944-58-135)
- 9:30 a.m.
  On semi-universal mappings.
  Escobedo Ra\'ul*, Instituto de Matematicas, UNAM
  (944-54-204)
- 10:00 a.m.
  On the Nonexistence of Almost Continuous Surjections between Certain Continua.
  Sam B. Nadler, Jr.*, West Virginia University
  (944-54-162)

Friday May 21, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Differential Equations, Nonlinear Analysis, and Numerical Solutions to PDEs, III
Organizers:
John W. Neuberger, University of North Texas jwn@unt.edu
Alfredo C. Nicolas, UAM anc@xanum.uam.mx
- 8:30 a.m.
  Radial solutions to a Dirichlet problem arising in Astrophysics.
  Alfonso Castro, The University of Texas at San Antonio
  Victor Padron*, The University of Texas at San Antonio and Universidad de Los Andes, Merida, Venezuela
  (944-35-59)
- 9:00 a.m.
  Boundary Value Problems for Fourth Order Composite Partial Differential.
  Francisco Castillo-Aranguren*, Instituto Tecnologico y de Estudios Superiores de Monterrey, Campus
  (944-35-29)
- 9:30 a.m.
  Diffusion in Deformable Media.
  R. E. Showalter*, University of Texas
  (944-35-16)
- 10:00 a.m.
  Macro-hybrid mixed finite element schemes and penalty-duality algorithms.
  Gonzalo Alduncin*, Mexican Institute of Petroleum and Institute of Geophysics, UNAM
  (944-35-208)

Friday May 21, 1999, 8:30 a.m.-10:30 a.m.
Special Session on Algebraic Geometry and Commutative Algebra, III
Organizers:
Javier Elizondo, UNAM javier@math.unam.mx
Xavier Gomez-Mont, CIMAT gmont@fractal.cimat.mx
Alberto Corso, Michigan State University corso@math.msu.edu
David A. Jorgensen, University of Texas at Arlington djorgens@math.uta.edu
- 8:30 a.m.
  Gorenstein Modules.
  Graham J Leuschke*, University of Nebraska
  (944-13-368)
- 9:00 a.m.
  Depth of symmetric algebras of certain ideals .
  Mark R Johnson*, University of Arkansas
  (944-13-304)
- 9:30 a.m.
  On residually $S_2$ ideals.
  Claudia Polini*, Hope College
  Alberto Corso, Michigan State University
  (944-13-151)
- 10:00 a.m.
  Strange summands of direct sums of copies of a module.
  Roger A Wiegand*, University of Nebraska
  (944-13-314)

Friday May 21, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Geometric and Symbolic Dynamical Systems, III
Organizers:
Luca Q. Zamboni, University of North Texas luca@unt.edu
Edgardo Ugalde, University of San Luis Potosi ugalde@cactus.iico.uaslp.mx
- 8:30 a.m.
  Higher dimensional ``solenoids'' as bundles.
  Robert F. Williams*, The University of Texas at Austin
  (944-58-301)
- 9:00 a.m.
  Systems of rotations with two atoms.
  Arek Goetz*, Boston University
  (944-58-148)
- 9:30 a.m.
  Geometry and coding for billiards on surfaces of constant curvature.
  Eugene Gutkin*, USC
  (944-51-271)
- 10:00 a.m.
  An entropy estimate for infinite interval exchange transformations.
  Frank Blume*, John Brown University
  (944-28-17)

Friday May 21, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Low Dimensional Topology, III
Organizers:
Mark W. Brittenham, University of North Texas britten@unt.edu
Francisco Gonzalez Acuna, IM-UNAM fico@matem.unam.mx
Luis Valdez-Sanchez, University of Texas at El Paso valdez@math.utep.edu
- 8:30 a.m.
  Positive diagrams for Seifert manifolds.
  John Hempel*, Rice University
  (944-57-373)
- 9:00 a.m.
  Bounded Degeneration of Tunnel Number.
  Martin G Scharlemann, UCSB
  Jennifer C Schultens*, Emory University
  (944-57-293)
- 9:30 a.m.
  Incompressible surfaces and 1-bridge knots w.r.t. a torus.
  Mario Eudave-Munoz*, UCSB and UNAM
  (944-57-387)
- 10:00 a.m.
  Minimum energy polygonal knots.
  Jonathan K Simon*, Univ. of Iowa
  Joshua Tokle, Univ. of Iowa
  (944-57-365)

Friday May 21, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Stochastic Processes, III
Organizers:
Frederi G. Viens, University of North Texas fviens@unt.edu
Jorge A. Leon, CINVESTAV jleon@math.cinvestav.mx
Juan Ruiz de Chavez, UAM jrch@xanum.uam.mx
- 8:30 a.m.
  On Solutions of Stochastic Wave Equations.
  Pao-Liu Chow*, Wayne State University
  (944-60-108)
- 9:30 a.m.
  Stochastic Viscosity Solutions for Nonlinear Stochastic Partial Differential Equations.
  Rainer Buckdahn, University of Brest
  Jin Ma*, Purdue University
  (944-60-188)
- 10:00 a.m.
  Ergodic Control for the Stochastic Navier-Stokes Equation.
  P. Sundar*, Louisiana State University
  S.S. Sritharan, U.S. Navy
  (944-60-210)

Friday May 21, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Ring Theory, III
Organizers:
Carlos Signoret-Poillon, UNAM-UAM casi@xanum.uam.mx
Sergio Lopez-Permouth, Ohio University slopez@bing.math.ohiou.edu
Ricardo Alfaro, University of Michigan-Flint ralfaro@umich.edu
- 8:30 a.m.
  The Double Infinite Chain Condition for Posets With Applications to Rings and Modules.
  Toma Albu, Ohio State University
  Gunter Krause, University of Manitoba
  Mark L. Teply*, University of Wisconsin-Milwaukee
  (944-16-295)
- 9:00 a.m.
  Chain conditions on quotient finite (uniform) dimensional modules.
  Toma Albu*, The Ohio State University
  S. Tariq Rizvi, The Ohio State University
  (944-16-243)
- 9:30 a.m.
  Quotient Rings of algebras of functions and operators.
  S. K. Jain*, Ohio University
  Ajit I. Singh, University of Delhi
  (944-16-316)
- 10:00 a.m.
  Iterated skew polynomial rings of quantum coordinate type.
  Kenneth R Goodearl*, University of California
  (944-16-179)

Friday May 21, 1999, 8:30 a.m.-10:40 a.m.
Special Session on Noncommutative Geometry, Quantum Groups, and Applications, III
Organizers:
Micho Durdevich, UNAM micho@math.unam.mx
Hanna Ewa Makaruk, Los Alamos National Laboratory hanna@t13.lanl.gov
Robert M. Owczarek, Los Alamos National Laboratory rmo@t13.lanl.gov
- 8:30 a.m.
  Quantum Classifying Spaces.
  Micho Durdevich*, Institute of Mathematics, UNAM
  (944-58-296)
- 9:10 a.m.
  Clifford bigebra as a quantum braided group.
  Zbigniew Oziewicz*, Universidad Nacional Aut\'onoma de M\'exico, Facultad de Estudios Superiores Cuautitl\'an Izcalli, Estado de M\'exico
  (944-16-11)
- 10:00 a.m.
  On the Topology of the Symmetry Group of the Standard Model.
  Miguel Socolovsky*, Institute of Nuclear Sciences, UNAM
  Marcelo Aguilar, Institute of Mathematics, UNAM
  (944-20-331)

Friday May 21, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Nonlinear Models in Biology and Celestial Mechanics, I
Organizers:
Ernesto Perez-Chavela, UAM epc@xanum.uam.mx
Jorge X. Velasco-Hernandez, UAM jxvh@xanum.uam.mx
Mary E. Parrott, University of South Florida parrott@math.usf.edu
Ernesto A. Lacomba, UAM lace@xanum.uam.mx
- 8:30 a.m.
  Symbolic Dynamics from Transverse Heteroclinic Intersections for Whiskered Tori.
  Clark Robinson*, Northwestern University
  (944-70-403)
- 9:30 a.m.
  Microswimming and the N body problem.
  Joaquin Delgado*, UAM-Iztapalapa
  (944-70-405)
- 10:00 a.m.
  Reducibility of linear cuasiperiodic systems.
  Ruben Flores-Espinoza*, Universidad de Sonora
  (944-70-398)

Friday May 21, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Combinatorics and Combinatorial Geometry, III
Organizers:
Jorge Urrutia, IMATE-UNAM and University of Ottawa jorge@site.uottawa.ca
Wlodzimierz Kuperberg, Auburn University kuperwl@mail.auburn.edu
- 8:30 a.m.
  Minimum kissing numbers of finite translative packings of a convex body.
  Istv\'an Talata*, Auburn University
  (944-52-256)
- 9:10 a.m.
  Density bounds for packings with translates of a cone (pyramid) whose base is a centrally symmetric convex plane region.
  Andras Bezdek, Auburn University and the Mathematical Institute of the Hungarian Academy of Sciences
  Wlodzimierz Kuperberg*, Auburn University
  (944-52-410)
- 9:50 a.m.
  Acyclic Combinatorics in Tournaments.
  Victor Neumann-Lara*, Instituto de Matematicas, UNAM
  (944-05-321)

Friday May 21, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Algebraic Topology, III
Organizers:
Frederick R. Cohen, University of Rochester cohf@poincare.math.rochester.edu
Samuel Gitler, University of Rochester gitler@troi.cc.rochester.edu
Carlos Prieto, UNAM cprieto@math.unam.mx
- 8:30 a.m.
  An $EO_2$ approach to claculating $\pi_*(L_{K(2)}S^0$.
  Mark E Mahowald*, Northwestern University
  Charles Rezk, Northwestern University
  (944-55-237)
- 9:30 a.m.
  Equivariant Approximation.
  Gregory Arone, University of Chicago
  William G Dwyer*, University of Notre Dame
  (944-55-291)
- 10:00 a.m.
  Some interesting examples of homology approximations of spaces with a group action.
  Gregory Z Arone*, University of Chicago
  (944-55-175)

Friday May 21, 1999, 8:30 a.m.-10:20 a.m.
Special Session on Differential Geometry and Geodesics, III
Organizers:
Phillip E. Parker, Wichita State University pparker@twsuvm.uc.twsu.edu
Lilia Del Riego, Univ Auto de San Luis Potosi lilia@biblos.dgb.uaslp.mx
- 8:30 a.m.
  Geometry of Hyperbolic Operators.
  Adam D. Helfer*, University of Missouri-Columbia
  (944-53-415)
- 9:00 a.m.
  Curvature of the Levi-Civita connection on the canonical bundle of a hermitian manifold.
  Gil Bor, CIMAT
  Luis Hernandez-Lamoneda*, CIMAT
  (944-53-28)
- 9:30 a.m.
  Aspects of Kaehler Cone Metrics.
  Thalia D. Jeffres*, Instituto de Fisica y Matematicas, UMSNH
  Rafe Mazzeo, Stanford University
  (944-53-213)
- 10:00 a.m.
  The moduli space of metrics of positive scalar curvature of some even dimensional manifolds.
  Egidio Barrera-Yanez*, CINVESTAV
  (944-53-19)

Friday May 21, 1999, 9:00 a.m.-10:20 a.m.
Special Session on Representation Theory of Algebras, III
Organizers:
Jose A. de la Pena, UNAM jap@penelope.matem.unam.mx
Christof Geiss, UNAM christof@math.unam.mx
Birge Huisgen-Zimmerman, University of California at Santa Barbara birge@math.ucsb.edu
- 9:00 a.m.
  Infinite dimensional representations of finite groups.
  David J Benson*, University of Georgia
  (944-20-254)
- 10:00 a.m.
  Stable equivalence and generic modules.
  Henning Krause*, University of California, Santa Barbara
  (944-16-231)

Friday May 21, 1999, 9:00 a.m.-10:10 a.m.
Session for Contributed Papers
- 9:15 a.m.
  Numerical Study of Equations with Negative Viscosity.
  Mahmoud Affouf*, Penn State Univ
  (944-35-327)
- 9:30 a.m.
  New trigonometric series expansions of the logarithmic derivatives of the elliptic $\theta_{1-4}$ functions and of twelve Jacobian elliptic functions.
  David S. Tselnik*, none
  (944-33-114)
- 9:45 a.m.
  Ordered binary matrices and their applications.
  G. Sampath*, University of Massachusetts at Dartmouth
  (944-68-78)
- 10:00 a.m.
  A~contractible, nowhere locally connected compactum.
  Robert D. Edwards*, UCLA
  (944-54-332)

Friday May 21, 1999, 11:00 a.m.-12:00 p.m.
Invited Address
Eigenvalues, invariant factors, highest weights, and Schubert calculus.
William Fulton*, University of Michigan
(944-15-305)

Friday May 21, 1999, 1:00 p.m.-2:00 p.m.
Invited Address
Stochastic optimal control: the direct method and the linear programming approach.
Onesimo Hernandez-Lerma*, CINVESTAV-IPN
(944-93-138)

Friday May 21, 1999, 2:30 p.m.-4:20 p.m.
Special Session on Representation Theory of Algebras, IV
Organizers:
Jose A. de la Pena, UNAM jap@penelope.matem.unam.mx
Christof Geiss, UNAM christof@math.unam.mx
Birge Huisgen-Zimmerman, University of California at Santa Barbara birge@math.ucsb.edu
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AMS International Meeting Full Program

Joint AMS-SMM International Meeting Denton, TX, May 19-22, 1999 Meeting #944

Wednesday May 19, 1999

Thursday May 20, 1999

Friday May 21, 1999

Joint AMS-SMM International Meeting
Denton, TX, May 19-22, 1999
Meeting #944