AMS Sectional Meeting Full Program

Current as of Tuesday, April 12, 2005 15:08:51

---

Program  |  Deadlines  |  Inquiries:  meet@ams.org

---

1991 Eastern Section Meeting
Philadelphia, PA, October 12-13, 1991
Meeting #868

Associate secretaries:
W Wistar Comfort, AMS wcomfort@wesleyan.edu

---

Saturday October 12, 1991

• Saturday October 12, 1991, 7:30 a.m.-9:55 a.m.
  Special Session on Variational Problems in Low Dimensional Geometry, I
  

  • 7:30 a.m.
    Foliations of Euclidean 3-space by constant mean curvature surfaces.
    Wayne F. Rossman*, University of Massachusetts, Amherst
    (868-53-175)
  • 8:10 a.m.
    Constant mean curvature hypersurfaces foliated by spheres.
    William C. Jagy*, Midwestern State University
    (868-53-79)
  • 8:45 a.m.
    Minimal surfaces and the squared-mean-curvature functional.
    Nicholas Schmitt*, University of Massachusetts, Amherst
    (868-53-89)
  • 9:25 a.m.
    Construction of genus two doubly-periodic embedded minimal surfaces in R^3.
    Fusheng Wei*, University of Massachusetts, Amherst
    (868-53-151)
• Saturday October 12, 1991, 8:00 a.m.-9:50 a.m.
  Special Session on Recent Progress in Ricci Curvature and Related Topics, I
  

  • 8:00 a.m.
    Hyperbolic Cartan connections and the Ricci flow.
    Maung Min-oo*, McMaster University
    (868-53-132)
  • 8:40 a.m.
    Nonnegative Ricci curvature and the fundamental group.
    Detlef Gromoll*, State University of New York, Stony Brook
    (868-53-185)
  • 9:20 a.m.
    Informal Discussion
• Saturday October 12, 1991, 8:00 a.m.-9:50 a.m.
  Special Session on Modular Forms, Arithmetic Algebraic Geometry, I
  

  • 8:00 a.m.
    Application of Dedekind sums to invariants of modular equations.
    Harvey Cohn*, City College, City University of New York
    Marvin I. Knopp, Temple University
    (868-11-52)
  • 8:30 a.m.
    Rational period functions with irrational poles are not Hecke eigenfunctions.
    Ellen Gethner*, Ohio State University, Columbus
    (868-11-137)
  • 9:00 a.m.
    Rational period functions, modular integrals, and indefinite binary quadratic forms.
    L. Alayne Parson*, Ohio State University, Columbus
    (868-11-136)
  • 9:30 a.m.
    Periods of modular forms.
    Don Zagier*, Max-Planck Institute for Mathematics, Germany
    (868-11-147)
• Saturday October 12, 1991, 8:00 a.m.-9:50 a.m.
  Special Session on Surgery Theory and Singular Spaces, I
  

  • 8:00 a.m.
    Formulae for generalized Casson's su(2)-invariant of 3-manifolds.
    Sylvain Cappell, Courant Institute of Mathematical Sciences, New York University
    Ronnie Lee*, Yale University
    Edward Miller, Polytechnic Institute of New York
    (868-20-138)
  • 8:30 a.m.
    Algebraic homotopy.
    Justin R. Smith*, Drexel University
    (868-55-159)
  • 9:00 a.m.
    Inductive detection for homotopy equivalences of manifolds.
    Slawomir Kwasik*, Tulane University
    Reinhard Schultz, Purdue University, West Lafayette
    (868-57-78)
  • 9:30 a.m.
    Algebraic G-vector bundles.
    Ted Petrie*, Rutgers University, New Brunswick
    (868-14-75)
• Saturday October 12, 1991, 8:00 a.m.-9:50 a.m.
  Special Session on Geometric Analysis, I
  

  • 8:00 a.m.
    Radon and Riesz transforms in real hyperbolic spaces.
    Carlos A. Berenstein*, University of Maryland, College Park
    Enrico Casadio Tarabusi, Universita di Trento, Povo, Italy
    (868-44-09)
  • 8:30 a.m.
    Support properties of the spherical Radon transform.
    Paul Goodey*, University of Oklahoma
    Wolfgang Weil, Universit\"at Karlsruhe, Germany
    (868-52-06)
  • 9:00 a.m.
    Microlocal analysis of the 2-plane transform.
    Allan Greenleaf*, University of Rochester
    Gunther Uhlmann, University of Washington
    (868-58-116)
  • 9:30 a.m.
    Explicit non-local formulas in real integral geometry.
    Simon Gindikin*, Rutgers University, New Brunswick
    (868-44-85)
• Saturday October 12, 1991, 8:00 a.m.-9:50 a.m.
  Special Session on Extreme Value Theory, I
  

  • 8:00 a.m.
    Regularly varying expected residual life and the domain of attraction of exp(-exp(-x)).
    Janos Galambos*, Temple University, Philadelphia
    Yuan Xu, University of Texas, Austin
    (868-60-69)
  • 8:30 a.m.
    Tail behaviour of quantile processes.
    Mikl\'os Cs\"org\H o*, Carleton University
    (868-60-97)
  • 9:00 a.m.
    Extremes of interarrival times under a variety of conditioning.
    Abera Abay*, Temple University, Philadelphia
    (868-60-45)
  • 9:30 a.m.
    Tail empirical and sums of extreme value processes.
    David M. Mason*, University of Delaware
    (868-60-121)
• Saturday October 12, 1991, 8:00 a.m.-9:50 a.m.
  Special Session on Applications of Microlocal Analysis to Partial Differential Equations, I
  

  • 8:00 a.m.
    A nonsolvable complex vector field with Holder coefficients.
    Howard Jacobowitz*, Institute for Advanced Study
    (868-35-62)
  • 8:35 a.m.
    Local solvability and estimates for the tangential Cauchy-Riemann equations.
    Mei-Chi Shaw*, University of Notre Dame
    (868-35-123)
  • 9:10 a.m.
    On the integrability of first-order complex PDE.
    Francois Treves*, Rutgers University, New Brunswick
    (868-35-162)
• Saturday October 12, 1991, 8:00 a.m.-9:50 a.m.
  Special Session on Rings and Representations, I
  

  • 8:00 a.m.
    The Jacobi identity for vertex operators and the representations of the twisted parafermion algebra.
    Cristiano Husu*, University of Connecticut, Stamford
    (868-17-139)
  • 8:30 a.m.
    p-structure of the Moonshine modules.
    Chongying Dong*, University of California, Santa Cruz
    Geoffrey Mason, University of California, Santa Cruz
    (868-17-54)
  • 9:00 a.m.
    Vertex operator algebras, modules and intertwining operators.
    Alex J. Feingold*, State University of New York, Binghamton
    John F. X. Ries, Ithaca College
    (868-17-63)
  • 9:30 a.m.
    Isomorphic vertex operator algebras induced by global conformal transformations on annuli.
    Yi-Zhi Huang*, University of Pennsylvania
    (868-81-50)
• Saturday October 12, 1991, 8:00 a.m.-9:50 a.m.
  Special Session on Tilings, I
  

  • 8:00 a.m.
    Some unsolved tiling problems.
    Doris Schattschneider*, Moravian College
    (868-51-106)
  • 8:30 a.m.
    Periodic tiling and how to compute them.
    D. H. Huson*, University of Bielefeld, Germany
    (868-51-65)
  • 9:00 a.m.
    How do matching rules work?
    Joshua E. S. Socolar*, IBM T. J. Watson Research Center, Yorktown Heights, New York
    (868-05-109)
  • 9:30 a.m.
    Matching rules for quasiperiodic tilings: Topological approach.
    Andr\'e Katz*, Ecole Polytechnique, France
    Leonid S. Levitov, Institute for Theoretical Physics, USSR and Massachusetts Institute on Technology
    (868-52-145)
• Saturday October 12, 1991, 8:00 a.m.-9:50 a.m.
  Special Session on Phase Transitions and/or Front Propagation, I
  

  • 8:00 a.m.
    Mathematical existence of crystal growth with Gibbs-Thomson curvature effects.
    Fred Almgren*, Princeton University
    Lihe Wang, Princeton University
    (868-49-30)
  • 8:30 a.m.
    Surface energies and phase transitions.
    Irene Fonseca*, Carnegie Mellon University
    (868-49-80)
  • 9:00 a.m.
    Motion by crystalline curvature.
    Jean Taylor*, Rutgers University, New Brunswick
    (868-49-38)
  • 9:30 a.m.
    Elliptic regularization of motion by mean curvature.
    Tom Ilmanen*, Institute for Advanced Study
    (868-51-122)
• Saturday October 12, 1991, 8:00 a.m.-9:50 a.m.
  Special Session on Numerical Linear Algebra, I
  

  • 8:00 a.m.
    A projection cutting plane algorithm for convex programming problems.
    Mordukh E. Primak*, Temple University, Philadelphia
    Daniel B. Szyld, Temple University, Philadelphia
    (868-65-25)
  • 8:30 a.m.
    Parallel implementation of the hp-version of the finite element method on a shared-memory architecture.
    I. Babu\v ska, University of Maryland, College Park
    H. C. Elman*, University of Maryland, College Park
    K. Markley, Rice University
    (868-65-17)
  • 9:00 a.m.
    Laplace's equation and the Dirichlet-Neumann map in multiply connected domains.
    A. Greenbaum*, Courant Institute of Mathematical Sciences, New York University
    L. Greengard, Courant Institute of Mathematical Sciences, New York University
    G. B. McFadden, National Institute of Standards and Technology, Maryland
    (868-65-05)
  • 9:30 a.m.
    Some recent results on Schwarz type domain decomposition algorithms.
    Olof B. Widlund*, Courant Institute of Mathematical Sciences, New York University
    (868-65-10)
• Saturday October 12, 1991, 10:00 a.m.-11:00 a.m.
  Invited Address
  Phase transitions and front propagation.
  ROOM 501, Temple University Center City, 1619 Walnut Street
  Panagiotis E. Souganidis*, Brown University
  (868-35-153)
• Saturday October 12, 1991, 12:30 p.m.-1:30 p.m.
  Invited Address
  Hyperbolization and metrics of least curvature on 3-manifolds.
  ROOM 501, Temple University Center City, 1619 Walnut Street
  Michael T. Anderson*, State University of New York, Stony Brook
  (868-58-101)
• Saturday October 12, 1991, 1:45 p.m.-3:35 p.m.
  Special Session on Recent Progress in Ricci Curvature and Related Topics,II
  

  • 1:45 p.m.
    Multiplier ideal sheaves and Futaki's invariant.
    Alan M. Nadel*, Massachusetts Institute of Technology
    (868-53-46)
  • 2:25 p.m.
    On the topological growth of metric balls in a complete manifold with nonnegative Ricci curvature.
    Zhongmin Shen*, University of Michigan, Ann Arbor
    (868-53-92)
  • 3:05 p.m.
    Aspects of prescribing Ricci curvature.
    Dennis DeTurck*, University of Pennsylvania
    (868-53-114)
• Saturday October 12, 1991, 1:45 p.m.-4:05 p.m.
  Special Session on Modular Forms, Arithmetic Algebraic Geometry, II
  

  • 1:45 p.m.
    New bounds for exponential sums and a conjecture of MacWilliams and Sloane.
    Carlos J. Moreno*, Bernard M. Baruch College, City University of New York
    Oscar Moreno, University of Puerto Rico, Rio Piedras, Puerto Rico
    (868-11-129)
  • 2:15 p.m.
    A half-integral weight multiplicity-one theorem.
    Thomas R. Shemanske*, Dartmouth College
    Lynne H. Walling, University of Colorado, Boulder
    (868-11-104)
  • 2:45 p.m.
    Number-theoretic constructions of Ramanujan graphs.
    Wen-Ching Winnie Li*, Pennsylvania State University, University Park
    (868-11-124)
  • 3:15 p.m.
    Problem Session
• Saturday October 12, 1991, 1:45 p.m.-4:05 p.m.
  Special Session on Surgery Theory and Singular Spaces, II
  

  • 1:45 p.m.
    Quantum invariants of lens spaces and a Dehn surgery formula.
    Robion Kirby, University of California, Berkeley
    Paul Melvin*, Bryn Mawr College
    (868-57-156)
  • 2:15 p.m.
    L-theory and dihedral homology. II.
    Guillermo Corti\~nas*, Rutgers University, New Brunswick
    (868-19-133)
  • 2:45 p.m.
    On the UNil group of Cappell.
    Frank Connolly*, University of Notre Dame
    Tadeusz Kozniewski, University of Warsaw, Poland
    (868-57-157)
  • 3:15 p.m.
    Bounded surgery and non-linear similarity.
    Ian Hambleton*, McMaster University
    E. K. Pedersen, State University of New York, Binghamton
    (868-57-91)
  • 3:45 p.m.
    Cocompact actions on S^n x R^k.
    Erik Kjaer Pedersen*, State University of New York, Binghamton
    (868-57-108)
• Saturday October 12, 1991, 1:45 p.m.-4:05 p.m.
  Special Session on Geometric Analysis, II
  

  • 1:45 p.m.
    On Blaschke's affine surface area formula.
    Erwin Lutwak*, Polytechnic Institute of New York
    (868-44-110)
  • 2:15 p.m.
    Discrepancy of halfspaces.
    Ralph Alexander*, University of Illinois, Urbana-Champaign
    (868-52-125)
  • 2:45 p.m.
    Wavelets and self-affine tilings.
    Robert S. Strichartz*, Cornell University
    (868-41-115)
  • 3:15 p.m.
    A vanishing theorem for distributions and support theorems for Radon transforms.
    Jan Boman*, University of Stockholm, Sweden
    (868-44-88)
  • 3:45 p.m.
    Cohomology relative to the germ of an exact analytic form.
    Abdelhamid Meziani*, Florida International University
    (868-44-150)
• Saturday October 12, 1991, 1:45 p.m.-3:35 p.m.
  Special Session on Extreme Value Theory, II
  

  • 1:45 p.m.
    Bounding probabilities connected with multiple event sequences.
    Andras Prekopa*, Rutgers University, New Brunswick
    (868-60-128)
  • 2:15 p.m.
    Bivariate Bonferroni-type inequalities.
    Min-Young Lee*, DanKook University, Korea
    (868-60-44)
  • 2:45 p.m.
    Distribution functions related to the largest prime factor function.
    Jean Marie DeKoninck*, Universit\'e Laval
    (868-11-107)
  • 3:15 p.m.
    Informal Discussion
• Saturday October 12, 1991, 1:45 p.m.-4:00 p.m.
  Special Session on Applications of Microlocal Analysis to Partial Differential Equations, II
  

  • 1:45 p.m.
    Applications of microlocal analysis to partial differential equations.
    J. J. Kohn*, Princeton University
    (868-35-144)
  • 2:20 p.m.
    Convex domains of finite type.
    Jeffery D. McNeal*, Princeton University
    (868-35-160)
  • 2:55 p.m.
    Microlocal analytic hypoellipicity for box_b.
    David S. Tartakoff*, University of Illinois, Chicago
    Makhlouf Derridj, University of Paris-Sud, France
    (868-35-161)
  • 3:30 p.m.
    Global analytic hypoellipticity of the barred partial-Neumann problem on decoupled Hartogs domains in dimension two.
    So-Chin Chen*, State University of New York, Albany
    (868-32-71)
• Saturday October 12, 1991, 1:45 p.m.-4:15 p.m.
  Special Session on Variational Problems in Low Dimensional Geometry, II
  

  • 1:45 p.m.
    Complete embedded minimal surfaces of finite total curvature with three ends.
    David Hoffman*, University of Massachusetts, Amherst
    (868-53-173)
  • 2:25 p.m.
    Harmonic immersions of surfaces into hyperbolic 3-manifolds.
    Michael Wolf*, Rice University
    (868-58-142)
  • 3:05 p.m.
    Volume minimization of Lagrangian submanifolds under Hamiltonian deformations.
    Yong-Geun Oh*, Courant Institute of Mathematical Sciences, New York University
    (868-53-70)
  • 3:45 p.m.
    Nonuniqueness and high energy solutions for the Yamabe problem.
    Daniel Pollack*, Stanford University
    (868-35-32)
• Saturday October 12, 1991, 1:45 p.m.-3:35 p.m.
  Special Session on Rings and Representations, II
  

  • 1:45 p.m.
    Lie bialgebra structures for the Witt algebra, the Virasoro algebra, Vect (S^1), and their dual Lie coalgebras.
    Walter J. Michaelis*, University of New Orleans
    (868-17-165)
  • 2:15 p.m.
    Witt and Virasoro algebras as Lie bialgebras.
    Earl J. Taft*, Rutgers University, New Brunswick and Mathematical Sciences Research Institute, Berkeley
    (868-17-19)
  • 2:45 p.m.
    Degree lowering algorithm and applications to the Weyl algebra.
    C. A. Dean*, University of Michigan, Ann Arbor
    J. W. Kerr, Michigan State University
    (868-16-187)
  • 3:15 p.m.
    On fully invariant ideals of the free group algebra and the free associative algebra.
    Samuel M. Vovsi*, Rutgers University, New Brunswick
    (868-16-140)
• Saturday October 12, 1991, 1:45 p.m.-4:05 p.m.
  Special Session on Tilings, II
  

  • 1:45 p.m.
    Golden isozonohedra, indiscrete regular tessellations, and quasicrystals.
    H. S. M. Coxeter*, University of Toronto
    (868-51-43)
  • 2:15 p.m.
    Regular maps constructed from linear groups.
    Peter McMullen, University College of London, England
    Barry Monson, University of New Brunswick
    Asia Ivi\'c Weiss*, York University
    (868-51-76)
  • 2:45 p.m.
    Monotypic tilings.
    Egon Schulte*, Northeastern University
    (868-52-77)
  • 3:15 p.m.
    Self-similar tiles with one tile.
    Karlheinz Grochenig*, University of Connecticut, Storrs
    (868-52-67)
  • 3:45 p.m.
    Matching conditions for, and minor modifications of, the 2-tile rhomboid set in 3-space.
    Robert Ammann*, Billerica, Massachusetts
    (868-52-181)
• Saturday October 12, 1991, 1:45 p.m.-4:05 p.m.
  Special Session on Phase Transitions and/or Front Propagation, II
  

  • 1:45 p.m.
    Dynamical issues for the Cahn-Hilliard equation.
    Paul C. Fife*, University of Utah
    (868-35-55)
  • 2:15 p.m.
    Dynamics of the Cahn-Hilliard equation.
    Peter W. Bates*, Brigham Young University
    (868-35-34)
  • 2:45 p.m.
    Slow dynamics of spherical fronts for the Cahn-Hilliard equation.
    N. D. Alikakos, University of Tennessee, Knoxville
    G. Fusco*, University of Rome, Italy
    (868-35-119)
  • 3:15 p.m.
    Slow evolution for the Cahn-Hilliard equation revisited.
    Lia Bronsard*, Carnegie Mellon University
    Danielle Hilhorst, University of Paris, France
    (868-35-36)
  • 3:45 p.m.
    On the spectrum of the Cahn-Hilliard operator.
    Nicholas D. Alikakos*, University of Tennessee, Knoxsville and University of Crete, Greece
    Giorgio Fusco, University of Rome, Italy
    (868-35-143)
• Saturday October 12, 1991, 1:45 p.m.-4:05 a.m.
  Special Session on Numerical Linear Algebra, II
  

  • 1:45 p.m.
    On the convex hull of projection matrices.
    Michael L. Overton*, Courant Institute of Mathematical Sciences, New York University
    Robert S. Womersley, University of New South Wales, Australia
    (868-65-14)
  • 2:15 p.m.
    Joint stability of two matrices and their joint spectral radius.
    Gilbert Strang*, Massachusetts Institute of Technology
    (868-65-07)
  • 2:45 p.m.
    Eigenvalues and pseudo-eigenvalues of nonsymmetric random matrices.
    Lloyd N. Trefethen*, Cornell University
    (868-65-20)
  • 3:15 p.m.
    Updatable, rank-revealing decompositions.
    G. W. Stewart*, University of Maryland, College Park
    (868-65-01)
  • 3:45 p.m.
    Numerical computation of an analytic, singular value decomposition of a matrix valued function.
    Angelika Bunse-Gerstner, University of Bielefeld, Germany
    Ralph Byers*, University of Kansas
    Volker Mehrmann, University of Bielefeld, Germany
    Nancy K. Nichols, University of Reading, United Kingdom
    (868-65-03)
• Saturday October 12, 1991, 1:45 p.m.-4:25 p.m.
  Session on Analysis
  

  • 1:45 p.m.
    A relation between the Jacobian and the elementary generalized Wronskians.
    Kenneth Wolsson*, Fairleigh Dickinson University
    (868-26-53)
  • 2:00 p.m.
    Zeros of the successive derivatives of power series with Hadamard gaps.
    Robert Gethner*, Franklin & Marshall College
    (868-30-04)
  • 2:15 p.m.
    Initial value problems and Green's functions for Leveroni wave operators.
    Steven D. Bronson*, Boston University
    Wing-Tsin Ma, Boston University
    Raymond J. Nagem, Boston University
    (868-39-182)
  • 2:30 p.m.
    Non-dispersive and isotropic wave operators for a lattice.
    Susan Leveroni*, Boston University
    Guido v. H. Sandri, Boston University
    (868-39-183)
  • 2:45 p.m.
    Quantum wavelets: The Dirac variational principle.
    D. F. Hsu*, Boston University
    D. Coker, Boston University
    G. v. H. Sandri, Boston University
    (868-41-190)
  • 3:00 p.m.
    New methods for solving Fredholm integral equations.
    Thomas W. Drueding*, Boston University
    Guido v. H. Sandri, Boston University
    Y. M. Fleming Lure, Caelum Research Corporation, Maryland
    H. Y. Michael Yeh, Caelum Research Corporation, Maryland
    (868-45-188)
  • 3:15 p.m.
    Construction of a convolution algebra.
    Brahm A. Rhodes*, Harvard Medical School
    Thomas W. Drueding, Boston University
    (868-13-189)
  • 3:30 p.m.
    A random number generator based on the logistic equation.
    J. J. Collins, Boston University
    Guido v. H. Sandri*, Boston University
    (868-60-180)
  • 3:45 p.m.
    Rigorous solutions for elastic wave scattering.
    Mark K. Hinders*, Massachusetts Institute of Technology
    Ta-Ming Fang, Massachusetts Institute of Technology
    (868-73-184)
  • 4:00 p.m.
    Some numerical integration methods using Taylor polynominals.
    Alan Horwitz*, Pennsylvania State University, Media
    (868-65-127)
  • 4:15 p.m.
    Exploring Hermite interpolation with mathematica.
    Clifford A. Reiter*, Lafayette College
    (868-65-57)
• Saturday October 12, 1991, 1:45 p.m.-3:40 p.m.
  Session on Algebra and Geometry
  

  • 1:45 p.m.
    A note on computing eigenvalues of banded Hermitian Toeplitz matrices.
    William F. Trench*, Trinity University
    (868-15-96)
  • 2:00 p.m.
    Boolean lattices of function spaces on direct products of groups with zeros.
    Hassan Sedaghat*, Virginia Commonwealth University
    (868-22-83)
  • 2:15 p.m.
    Construction of a universal point for aperiodic tilings.
    Catherine Gorini*, Maharishi International University
    (868-51-66)
  • 2:30 p.m.
    The valance and coloring problems.
    Jonathan Sondow*, Yeshiva University
    (868-52-82)
  • 2:45 p.m.
    Families of nearly neighborly rectangular polytopes.
    Julie D. Simon*, Antioch College
    (868-52-168)
  • 3:00 p.m.
    Tiling by stacks.
    Linda Fosnaugh*, Emporia State University
    David Klarner, University of Nebraska, Lincoln
    (868-05-131)
  • 3:15 p.m.
    Inverse problems in design theory.
    Vadim Komkov*, Air Force Institute of Technology
    (868-73-135)
  • 3:30 p.m.
    The Selberg conjecture for SL(3,Z).
    Jonathan Huntley*, Bernard M. Baruch College, City University of New York
    David E. Tepper, Bernard M. Baruch College, City University of New York
    (868-11-58)

Sunday October 13, 1991

• Sunday October 13, 1991, 7:30 a.m.-9:50 a.m.
  Special Session on Modular Forms, Arithmetic Algebraic Geometry, III
  

  • 7:30 a.m.
    Galois module structure of schemes and modular forms.
    Ted Chinburg*, University of Pennsylvania
    (868-11-95)
  • 8:00 a.m.
    Torsion points on some Jacobians of modular curves.
    Dino J. Lorenzini*, Duke University
    (868-11-93)
  • 8:30 a.m.
    p-Adic complex power and Bernstein-Sato polynominal.
    Xiao-Wei Zhu*, University of Oklahoma
    (868-11-166)
  • 9:00 a.m.
    Variation of the canonical height in algebraic families.
    Joseph Silverman*, Brown University
    (868-11-29)
  • 9:30 a.m.
    Informal Discussion
• Sunday October 13, 1991, 7:30 a.m.-9:50 a.m.
  Special Session on Surgery Theory and Singular Spaces, III
  

  • 7:30 a.m.
    Non-characteristic embeddings of Tori.
    David Miller*, Swarthmore College
    (868-57-61)
  • 8:00 a.m.
    Positive scalar curvature for closed manifolds with finite fundamental group.
    Jonathan Rosenberg*, University of Maryland, College Park
    (868-53-158)
  • 8:30 a.m.
    Characteristics class and singular spaces.
    Sylvain Cappell*, Courant Institute of Mathematical Sciences, New York University
    (868-57-176)
  • 9:00 a.m.
    Atiyah invariant of Kahler manifolds and Picard variety.
    A. Libgober*, University of Illinois, Chicago
    (868-57-126)
  • 9:30 a.m.
    Torsion and the K-theory of Von Neumann algebras.
    Mel Rothenberg*, University of Chicago
    (868-57-87)
• Sunday October 13, 1991, 7:30 a.m.-9:50 a.m.
  Special Session on Geometric Analysis, III
  

  • 7:30 a.m.
    The flat horocycle transform on a symmetric space.
    Sigurdur Helgason*, Massachusetts Institute of Technology
    (868-43-23)
  • 8:00 a.m.
    The infinitesimal rigidity of the complex quadric of dimension four.
    Hubert Goldschmidt*, Columbia University
    (868-53-24)
  • 8:30 a.m.
    Range characterizations of totally geodesic Radon transforms on compact symmetric spaces.
    Fulton Gonzalez*, Tufts University
    (868-44-86)
  • 9:00 a.m.
    Radon transforms and structure of compact symmetric spaces.
    Eric Grinberg*, Temple University, Philadelphia
    (868-44-149)
  • 9:30 a.m.
    Real analytic Radon transforms and Pompeiu problems.
    Eric Todd Quinto*, Tufts University
    (868-44-90)
• Sunday October 13, 1991, 7:30 a.m.-9:55 a.m.
  Special Session on Variational Problems in Low Dimensional Geometry, III
  

  • 7:30 a.m.
    Poincare's geodesics, soap bubbles, and constant-curvature curves.
    Frank Morgan*, Williams College
    (868-53-113)
  • 8:10 a.m.
    What is (weighted) mean curvature?
    Jean Taylor*, Rutgers University, New Brunswick
    (868-49-37)
  • 8:45 a.m.
    Computing optimal geometries.
    Fred Almgren*, Princeton University
    (868-49-31)
  • 9:25 a.m.
    Proving area-minimization by slicing.
    Gary R. Lawlor*, Brigham Young University
    (868-49-42)
• Sunday October 13, 1991, 7:30 a.m.-9:50 a.m.
  Special Session on Phase Transitions and/or Front Propagation, III
  

  • 7:30 a.m.
    Generalized mean curvature motion.
    L. C. Evans*, University of California, Berkeley
    J. Spruck, University of Massachusetts, Amherst
    (868-35-74)
  • 8:00 a.m.
    Front propogation for reaction diffusion equations.
    G. Barles*, University de Tours, France
    H. M. Soner, Carnegie Mellon University
    P. E. Souganidis, Brown University
    (868-35-33)
  • 8:30 a.m.
    Curvature-dependent front propagation with boundary conditions.
    Peter Sternberg*, Indiana University, Bloomington
    (868-35-73)
  • 9:00 a.m.
    Convergence of Allen-Cahn equation.
    H. Mete Soner*, Carnegie Mellon University
    (868-35-81)
  • 9:30 a.m.
    Models of flame propagation and crystal growth: A differential games approach.
    Pierpaolo Soravia*, Brown University
    (868-35-163)
• Sunday October 13, 1991, 7:30 a.m.-9:50 a.m.
  Special Session on Numerical Linear Algebra, III
  

  • 7:30 a.m.
    A direct method for solving unstructed sparse linear systems.
    Carl D. Meyer*, North Carolina State University
    (868-65-22)
  • 8:00 a.m.
    A new implementation of th GMRES method.
    Lothar Reichel*, University of Kentucky
    Z. Bai, University of Kentucky
    D. Hu, University of Kentucky
    (868-65-08)
  • 8:30 a.m.
    Asynchronous parallel iterations for solving nonlinear systems.
    L. Elsner, University of Bielefeld, Germany
    I. Koltracht, University of Connecticut, Storrs
    M. Neumann*, University of Connecticut, Storrs
    (868-65-35)
  • 9:00 a.m.
    SOR for Markov chain problems.
    William J. Stewart*, North Carolina State University
    (868-65-99)
  • 9:30 a.m.
    Convergent iterative methods to find stationary distributions of Markov processes.
    Ivo Marek*, University Karlovy, Czechoslovakia
    Daniel B. Szyld, Temple University, Philadelphia
    (868-65-26)
• Sunday October 13, 1991, 8:00 a.m.-9:50 a.m.
  Special Session on Recent Progress in Ricci Curvature and Related Topics,III
  

  • 8:00 a.m.
    Diffeomorphism finiteness for a certain class of Riemannian manifolds.
    Jeff Cheeger*, Courant Institute of Mathematical Sciences, New York University
    (868-53-72)
  • 8:40 a.m.
    Volume comparison under scaling invariant Ricci bound.
    Guojun G. Liao*, University of Texas, Arlington
    Jianzhong Su, University of Texas, Arlington
    (868-53-51)
  • 9:20 a.m.
    Bounds on the fundamental group of a manifold with almost nonnegative Ricci curvature.
    Steve Rosenberg, Boston University
    Deane Yang*, Polytechnic Institute of New York
    (868-53-103)
• Sunday October 13, 1991, 8:00 a.m.-9:50 a.m.
  Special Session on Extreme Value Theory, III
  

  • 8:00 a.m.
    Improved asymtotics for tail density estimation.
    James Pickands, III*, University of Pennsylvania
    (868-62-152)
  • 8:30 a.m.
    A flaw model with random intensity.
    Howard M. Taylor*, University of Delaware
    (868-60-118)
  • 9:00 a.m.
    Practical application of newer methods of tail estimation to wind engineering: A case study.
    James A. Lechner, National Institute of Standards and Technology, Maryland
    Stefan D. Leigh*, National Institute of Standards and Technology, Maryland
    Emil Simiu, National Institute of Standards and Technology, Maryland
    (868-62-112)
  • 9:30 a.m.
    Extreme values in stochastic epidemic processes.
    Grace L. Yang*, University of Maryland, College Park
    (868-60-130)
• Sunday October 13, 1991, 8:00 a.m.-9:40 a.m.
  Special Session on Applications of Microlocal Analysis to Partial Differential Equations, III
  

  • 8:00 a.m.
    Analytic hypoellipticity of the Kohn Laplacian plus a constant.
    Daryl Geller*, State University of New York, Stony Brook
    (868-35-84)
  • 8:35 a.m.
    Boundedness of the FBI transform on Sobolev spaces and propagation of singularities.
    S. Berhanu, Temple University, Philadelphia
    S. Chanillo*, Rutgers University, New Brunswick
    (868-35-117)
  • 9:10 a.m.
    Wedge extendability for hypoanalytic structures.
    Mark E. Marson*, Purdue University, West Lafayette
    (868-35-171)
• Sunday October 13, 1991, 8:00 a.m.-9:50 a.m.
  Special Session on Rings and Representations, III
  

  • 8:00 a.m.
    Quotients of crossed products of Hopf algebras.
    J. Bergen, DePaul University
    M. Susan Montgomery*, University of Southern California
    (868-16-154)
  • 8:30 a.m.
    Delta methods in enveloping rings. II.
    Jeffrey Bergen*, DePaul University
    D. S. Passman, University of Wisconsin, Madison
    (868-16-27)
  • 9:00 a.m.
    Cocommutative Hopf algebra actions and the Connes spectrum.
    James Osterburg, University of Cincinnati
    Declan Quinn*, Syracuse University
    (868-16-155)
  • 9:30 a.m.
    Artinian rings with linearly ordered two-sided ideals.
    Barbara L. Osofsky*, Rutgers University, New Brunswick
    Richard D. Resco, University of Oklahoma
    (868-16-94)
• Sunday October 13, 1991, 8:00 a.m.-9:50 a.m.
  Special Session on Tilings, III
  

  • 8:00 a.m.
    Penrose tilings, crystals and dynamical systems.
    Charles Radin*, University of Texas, Austin
    (868-47-39)
  • 8:30 a.m.
    Tilings, orbifolds, and symmetry.
    John H. Conway*, Princeton University
    (868-51-105)
  • 9:00 a.m.
    An elementary proof of two triangle-tiling theorems of Conway and Lagarias.
    Donald C. West*, State University of New York, College at Plattsburgh
    (868-05-60)
  • 9:30 a.m.
    Classification of self-dual tilings.
    Walter Stromquist*, Daniel H. Wagner Associates, Paoli, Pennsylvania
    (868-51-68)
• Sunday October 13, 1991, 8:30 a.m.-9:50 a.m.
  Special Session on Nonlinear Partial Differential Equations, I
  

  • 8:30 a.m.
    Solvability of a fourth order equation in conformal geometry.
    Sun-Yung Alice Chang*, University of California, Los Angeles
    Paul C. Yang, University of Southern California
    (868-53-12)
  • 9:00 a.m.
    On uniformly rotating stars.
    Yanyan Li*, Rutgers University, New Brunswick
    (868-35-16)
  • 9:30 a.m.
    Poincare-Bendixson theory for state dependent differential-delay equations.
    John Mallet-Paret, Brown University
    Roger D. Nussbaum*, Rutgers University, New Brunswick
    (868-35-18)
• Sunday October 13, 1991, 10:00 a.m.-11:00 a.m.
  Invited Address
  Tilings, quasicrystals, and Hilbert's 18th problem.
  ROOM 501, Temple University Center City, 1619 Walnut Street
  Marjorie Senechal*, Smith College
  (868-52-102)
• Sunday October 13, 1991, 12:30 p.m.-1:30 p.m.
  Invited Address
  Critical points at infinity in some variational problems.
  ROOM 501, Temple University Center City, 1619 Walnut Street
  Abbas Bahri*, Rutgers University, New Brunswick
  (868-35-21)
• Sunday October 13, 1991, 1:45 p.m.-2:55 p.m.
  Special Session on Recent Progress in Ricci Curvature and Related Topics,IV
  

  • 1:45 p.m.
    Manifolds of negatively pinched curvature.
    Rugang Ye*, University of California, Santa Barbara
    (868-53-186)
  • 2:25 p.m.
    Fredholm operators and Einstein metrics on conformally compact manifolds.
    John M. Lee*, University of Washington
    (868-53-164)
• Sunday October 13, 1991, 1:45 p.m.-4:05 p.m.
  Special Session on Modular Forms, Arithmetic Algebraic Geometry, IV
  

  • 1:45 p.m.
    Zeta functions of flag varieties and Einstein series for Gl_n.
    David J. Wright*, Oklahoma State University, Stillwater
    (868-11-169)
  • 2:15 p.m.
    Eisenstein series with explicit expansions.
    Paul Feit*, Hamden, Connecticut
    (868-11-48)
  • 2:45 p.m.
    Universal local zeta functions.
    Diane Meuser*, Boston University
    (868-11-64)
  • 3:15 p.m.
    Bernoulli congruences between periods of modular forms.
    G. S. Nelson*, Pennsylvania State University, Erie
    (868-11-28)
  • 3:45 p.m.
    Informal Discusison
• Sunday October 13, 1991, 1:45 p.m.-3:35 p.m.
  Special Session on Surgery Theory and Singular Spaces, IV
  

  • 1:45 p.m.
    Links and localised Blanchfield pairings.
    Kent Orr*, Indiana University, Bloomington
    (868-57-167)
  • 2:15 p.m.
    G-surgery up to topological simple homotopy.
    Mark Steinberger*, State University of New York, Albany
    Frank Connolly, University of Notre Dame
    (868-57-178)
  • 2:45 p.m.
    The equivariant Borel conjecture fails.
    Shmuel Weinberger*, University of Chicago
    (868-57-170)
  • 3:15 p.m.
    Periodicity in stable equivariant surgery.
    Min Yan*, University of Michigan, Ann Arbor
    (868-57-134)
• Sunday October 13, 1991, 1:45 p.m.-3:35 p.m.
  Special Session on Geometric Analysis, IV
  

  • 1:45 p.m.
    Asymptotic finite propagation speed for heat diffusion on certain Riemannian manifolds.
    Jean-Philippe Anker, Universite de Nancy I, France
    Alberto G. Setti*, Cornell University
    (868-58-41)
  • 2:15 p.m.
    Some direct and inverse problems arising in design of reflecting surfaces.
    Vladimir Oliker*, Emory University
    (868-53-40)
  • 2:45 p.m.
    Nonlinear Fourier analysis.
    Leon Ehrenpreis*, Temple University, Philadelphia
    (868-44-148)
  • 3:15 p.m.
    On stability estimates in the 'hole theorem'for the Radon transform.
    Peter Kuchment*, Wichita State University
    Ziqi Sun, Wichita State University
    (868-44-172)
• Sunday October 13, 1991, 1:45 p.m.-3:35 p.m.
  Special Session on Variational Problems in Low Dimensional Geometry, IV
  

  • 1:45 p.m.
    Projective minimal surfaces.
    Lucas Hsu*, Mathematical Sciences Research Institute, Berkeley
    (868-58-177)
  • 2:25 p.m.
    Variational properties of holomorphic Abelian differentials on Riemann surfaces.
    Lev Slutskin*, Yeshiva University
    (868-30-56)
  • 3:05 p.m.
    Isoperimetric regions in some product manifolds.
    Jesus Gonzalo*, Universidad Autonoma de Madrid, Spain
    (868-53-98)
• Sunday October 13, 1991, 1:45 p.m.-3:05 p.m.
  Special Session on Tilings, IV
  

  • 1:45 p.m.
    Some results on semiregular tessellations of the hyperbolic plane.
    Douglas J. Dunham*, University of Minnesota, Duluth
    (868-52-146)
  • 2:15 p.m.
    Balance of tilings in the hyperbolic plane.
    Judith Flagg Moran*, Trinity College
    (868-05-100)
  • 2:45 p.m.
    Cube tilings, graphs, and simulation.
    S\'andor Szab\'o*, University of the Pacific
    (868-51-120)
• Sunday October 13, 1991, 1:45 p.m.-3:05 a.m.
  Special Session on Phase Transitions and/or Front Propagation, IV
  

  • 1:45 p.m.
    Singular limits of phase field equations: Stefan-type models, and motion by mean curvature.
    G. Caginalp*, University of Pittsburgh
    (868-35-59)
  • 2:15 p.m.
    Generation and propagation of interfaces for reaction-diffusion equations and systems.
    Xinfu Chen*, University of Minnesota, Minneapolis
    (868-35-11)
  • 2:45 p.m.
    Delayed oscillation phenomena.
    Jianzhong Su*, University of Texas, Arlington
    (868-35-49)
• Sunday October 13, 1991, 1:45 p.m.-3:05 p.m.
  Special Session on Numerical Linear Algebra, IV
  

  • 1:45 p.m.
    Modifying the Shougen-Shuquin algorithm for the banded symmetric generalized matrix eigenvalue problem.
    Linda Kaufman*, AT&T Bell Laboratories, Murray Hill, New Jersey
    (868-65-13)
  • 2:15 p.m.
    Parallel solution of generalized band symmetric eigenvalue problems by sectioning.
    Ricardo D. Pantazis*, Duke University
    (868-65-111)
  • 2:45 p.m.
    Error analysis of update methods for the symmetric eigenvalue problem.
    Jesse L. Barlow*, Pennsylvania State University, University Park
    (868-65-02)
• Sunday October 13, 1991, 1:45 p.m.-3:05 p.m.
  Special Session on Nonlinear Partial Differential Equations, II
  

  • 1:45 p.m.
    Multivortices in the electroweak theory.
    Yisong Yang*, University of New Mexico
    (868-35-47)
  • 2:15 p.m.
    Positive solutions of semilinear elliptic equationcap delta u + hu_n-2/n+2 = 0.
    Tiancheng Ouyang*, University of Cincinnati
    (868-35-141)
  • 2:45 p.m.
    Generalized unique continuation theorems.
    Libin Mou*, University of Southern California
    (868-35-179)

Inquiries:  meet@ams.org

---