AMS Sectional Meeting Full Program

Current as of Tuesday, April 12, 2005 15:08:44

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Program  |  Deadlines  |  Inquiries:  meet@ams.org

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1990 Fall Eastern Sectional Meeting
Amherst, MA, October 20-21, 1990
Meeting #860

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

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Saturday October 20, 1990

• Saturday October 20, 1990, 7:50 a.m.-9:45 a.m.
  Session on Applied Mathematics
  Room 51, Goessmann Laboratory
  

  • 7:50 a.m.
    Remarks on Volterra functional-differential equations.
    C. Corduneanu*, University of Texas, Arlington
    (860-34-126)
  • 8:05 a.m.
    Closure of the semi-group of convolutions.
    C. Konstantopoulos, Boston University
    W. Ma, Boston University
    G. Sandri*, Boston University
    (860-46-130)
  • 8:20 a.m.
    Electron electrodynamics.
    Domina Eberle Spencer*, University of Connecticut, Storrs
    Shama Y. Uma, Bridgewater State College
    (860-78-89)
  • 8:35 a.m.
    Comparison of electric and magnetic field vectors in classical and Gaussian electrodynamics.
    Domina Eberle Spencer, University of Connecticut, Storrs
    Shama Y. Uma*, Bridgewater State College
    (860-78-90)
  • 8:50 a.m.
    The differential equations of magneto-hydrodynamics.
    Gerard Coutu*, Hartford Graduate Center
    Domina Eberle Spencer, University of Connecticut, Storrs
    (860-76-91)
  • 9:05 a.m.
    The complete Maxwell equations.
    Arjan S. Mirchandaney, Defiance College
    Domina Eberle Spencer, University of Connecticut, Storrs
    Shama Y. Uma, Bridgewater State College
    Philip J. Mann*, University of Connecticut, Storrs
    (860-78-92)
  • 9:20 a.m.
    Linear programming and toral actions.
    Leonid Faybusovich*, Harvard University
    (860-90-104)
  • 9:35 a.m.
    Characterization of an f-distance property for 1-dimensional d-symbol quasicrystals.
    Ramin Vakilian*, University of California, Davis
    (860-82-124)
• Saturday October 20, 1990, 8:00 a.m.-9:50 a.m.
  Special Session on Hyperbolic Manifolds, I
  Room 20, Goessmann Laboratory
  

  • 8:00 a.m.
    The orthogonal spectrum of a hyperbolic manifold.
    Ara Basmajian*, University of Oklahoma
    (860-53-110)
  • 8:30 a.m.
    Geometrically tame hyperbolic 3-manifolds.
    Dick Canary*, Stanford University
    (860-57-123)
  • 9:00 a.m.
    The smallest hyperbolic 3-manifolds with totally geodesic boundary.
    Sadayoshi Kojima*, Tokyo Institute of Technology, Japan
    Yosuke Miyamoto, Tokyo Institute of Technology, Japan
    (860-20-49)
  • 9:30 a.m.
    Amalgamation and the invariant trace field of a Kleinian group.
    Walter D. Neumann*, Ohio State University, Columbus
    Alan W. Reid, Ohio State University, Columbus and University of Aberdeen, Scotland
    (860-57-50)
• Saturday October 20, 1990, 8:00 a.m.-9:50 a.m.
  Special Session on Lattices, Geometry, and Combinatorics, I
  Room 103, Lederle Graduate Research Center
  

  • 8:00 a.m.
    The adjunction argument.
    Frank Grosshans*, West Chester University of Pennsylvania
    (860-51-60)
  • 8:30 a.m.
    Lattice geometries.
    M. K. Bennett, University of Massachusetts, Amherst
    Robert Piziak*, Baylor University
    (860-06-74)
  • 9:00 a.m.
    Formally real ^*-fields.
    Samuel S. Holland, Jr.*, University of Massachusetts, Amherst
    (860-06-55)
  • 9:30 a.m.
    A Boolean formalization of the predicate calculus.
    Isidore Fleischer*, University of Windsor
    (860-03-57)
• Saturday October 20, 1990, 8:00 a.m.-9:50 a.m.
  Special Session on Non-linear Dynamics in Mathematics and Science, I
  Room 126, Hasbrouck Laboratory
  

  • 8:00 a.m.
    Meromorphic nonlinear integrable systems.
    Solomon J. Alber*, University of Pennsylvania
    (860-35-117)
  • 8:30 a.m.
    Transient solutions of the Navier-Stokes equations.
    D. Sather*, University of Colorado, Boulder
    (860-76-11)
  • 9:00 a.m.
    Calculus of variations and Besicovitch dynamics.
    M. S. Berger, University of Massachusetts, Amherst
    Y. Y. Chen*, Princeton University
    (860-34-113)
  • 9:30 a.m.
    Properties of travelling waves in a suspension bridge.
    A. C. Lazer, University of Miami
    P. J. McKenna*, University of Connecticut, Storrs
    (860-35-111)
• Saturday October 20, 1990, 8:00 a.m.-9:50 a.m.
  Special Session on Semigroups, I
  Room 111, Lederle Graduate Research Center
  

  • 8:00 a.m.
    The congruence extension property, I.
    John A. Hildebrant*, Louisiana State University, Baton Rouge
    Josefa I. Garcia, University of Puerto Rico, Arecibo
    (860-20-66)
  • 8:30 a.m.
    The congruence extension property, II.
    Josefa I. Garcia*, University of Puerto Rico, Arecibo
    John A. Hildebrant, Louisiana State University, Baton Rouge
    (860-20-65)
  • 9:00 a.m.
    Difference semigroups.
    Boris M. Schein*, University of Arkansas, Fayetteville
    (860-20-62)
  • 9:30 a.m.
    Discussion
• Saturday October 20, 1990, 8:00 a.m.-9:50 a.m.
  Special Session on Discrete Groups and Geometric Structures in 2, 3 and 4 Dimensions, I
  Room 64, Goessmann Laboratory
  

  • 8:00 a.m.
    Mixing elements into Kleinian groups.
    James Anderson*, State University of New York, Stony Brook
    (860-30-100)
  • 8:30 a.m.
    Spectral geometry of arithmetic hyperbolic manifolds.
    Robert Brooks*, University of Southern California
    (860-58-27)
  • 9:00 a.m.
    Discussion
  • 9:30 a.m.
    Hausdorff dimensions of limit sets.
    Kevin Corlette*, University of Chicago
    (860-53-122)
• Saturday October 20, 1990, 8:00 a.m.-9:50 a.m.
  Special Session on Lie Groups and Algebraic Groups, I
  Room 201, Lederle Graduate Research Center
  

  • 8:00 a.m.
    Special unipotent representations.
    Jeffrey Adams, University of Maryland, College Park
    Dan Barbasch, Cornell University
    David A. Vogan, Jr.*, Massachusetts Institute of Technology
    (860-22-20)
  • 8:30 a.m.
    Lefschetz numbers and cyclic base change for purely imaginary extensions.
    Birgit Speh*, Cornell University
    (860-11-76)
  • 9:00 a.m.
    On Dixmier algebras.
    Iwan Pranata*, Cornell University
    (860-17-16)
  • 9:30 a.m.
    Szego mappings into representations in cohomology.
    Leticia Barchini, State University of New York, Stony Brook
    A. W. Knapp*, State University of New York, Stony Brook
    (860-22-06)
• Saturday October 20, 1990, 8:00 a.m.-9:50 a.m.
  Special Session on Algebraic Graph Theory, I
  Room 101, Lederle Graduate Research Center
  

  • 8:00 a.m.
    Chordal graphs and matrix structure: A survey.
    Charles R. Johnson*, College of William and Mary
    (860-15-94)
  • 8:40 a.m.
    Graphs with given group, order, and size.
    Louis V. Quintas*, Pace University, New York
    (860-05-03)
  • 9:20 a.m.
    On binary trees and S-pairs.
    Chjan Lim*, Rensselaer Polytechnic Institute
    (860-05-119)
• Saturday October 20, 1990, 8:00 a.m.-9:50 a.m.
  Special Session on Ergodic Theory, I
  Room 203, Lederle Graduate Research Center
  

  • 8:00 a.m.
    Some rigorous results for the Greenberg-Hastings model.
    Richard Durrett, Cornell University
    Jeffrey Steif*, Cornell University
    (860-60-79)
  • 8:30 a.m.
    Invariants for shift equivalence of matrices of polynomials.
    David Handelman*, University of Ottawa
    (860-28-71)
  • 9:00 a.m.
    A characterization of ergodic dissipative flow.
    Yuji Ito*, Keio University, Japan
    (860-28-47)
  • 9:30 a.m.
    Discussion
• Saturday October 20, 1990, 8:30 a.m.-9:50 a.m.
  Special Session on Aperiodicity and Order, I
  Room 124, Hasbrouck Laboratory
  

  • 8:30 a.m.
    A spectral dictionary.
    Marjorie Senechal*, Smith College
    (860-42-32)
  • 9:00 a.m.
    On certain properties of deterministic disorder generated by substitutions of finite automata.
    Fran\c coise Axel*, Solid State Physics Laboratory, France
    (860-82-137)
  • 9:30 a.m.
    Fault-tolerant and self-organizing cellular automata.
    Peter G\'acs*, Boston University
    (860-68-34)
• Saturday October 20, 1990, 10:00 a.m.-11:00 a.m.
  Invited Address
• Saturday October 20, 1990, 12:30 p.m.-1:30 p.m.
  Invited Address
  Global dynamics of delay differential equations.
  Room 131, Marcus Hall
  John J. Mallet-Paret*, Brown University
  (860-39-73)
• Saturday October 20, 1990, 1:45 p.m.-4:05 p.m.
  Special Session on Hyperbolic Manifolds, II
  Room 20, Goessmann Laboratory
  

  • 1:45 p.m.
    The geometry of hyperbolic manifolds.
    John G. Ratcliffe*, Vanderbilt University
    (860-22-114)
  • 2:15 p.m.
    Totally geodesic surfaces in hyperbolic 3-manifolds.
    William Menasco, State University of New York, College at Buffalo
    Alan W. Reid*, Ohio State University, Columbus and University of Aberdeen, Scotland
    (860-57-52)
  • 2:45 p.m.
    Configurations of curves on surfaces.
    Joel Hass, University of California, Davis
    Peter Scott*, University of Michigan, Ann Arbor
    (860-57-01)
  • 3:15 p.m.
    Geometric triangulations of hyperbolic 3-orbifolds.
    William D. Dunbar*, Pennsylvania State University, Erie
    (860-57-48)
  • 3:45 p.m.
    Dehn surgery and spherical space forms.
    Steven A. Bleiler*, Portland State University
    Craig Hodgson, Columbia University
    (860-57-51)
• Saturday October 20, 1990, 1:45 p.m.-4:05 p.m.
  Special Session on Lattices, Geometry, and Combinatorics, II
  Room 103, Lederle Graduate Research Center
  

  • 1:45 p.m.
    Lattices of quasivarieties of 3-element algebras.
    M. E. Adams*, State University of New York, College at New Paltz
    W. Dziobiak, N. Copernicus University, Poland
    (860-06-56)
  • 2:15 p.m.
    Equational theory of if-then-else.
    Ernest G. Manes*, University of Massachusetts, Amherst
    (860-06-53)
  • 2:45 p.m.
    Halting sets of programs over universal algebras.
    H. Peter Gumm*, State University of New York, College at New Paltz
    (860-68-103)
  • 3:15 p.m.
    Varieties of demi-pseudocomplemented lattices.
    Hanamantagouda P. Sankappanavar*, State University of New York, College at New Paltz
    (860-06-132)
  • 3:45 p.m.
    A characterization of finite subdirectly irreducible lattices.
    J. B. Nation*, University of Hawaii, Honolulu
    (860-06-54)
• Saturday October 20, 1990, 1:45 p.m.-4:05 p.m.
  Special Session on Non-linear Dynamics in Mathematics and Science, II
  Room 126, Hasbrouck Laboratory
  

  • 1:45 p.m.
    Chaotic spikes arising from a model of bursting in excitable membranes.
    David Terman*, Ohio State University, Columbus
    (860-92-116)
  • 2:15 p.m.
    Existence and stability of travelling wave solutions.
    Roger Lui*, Worcester Polytechnic Institute
    (860-35-70)
  • 2:45 p.m.
    Nonlinear development of detonation instabilities.
    Victor Roytburd*, Rensselaer Polytechnic Institute
    (860-76-106)
  • 3:15 p.m.
    Weak shocks for a lambda-omega system are stable.
    Todd Kapitula*, Brown University
    (860-35-78)
  • 3:45 p.m.
    Nonphysical limits of solutions of the Navier-Stokes equations for compressible flow.
    David Hoff*, Indiana University, Bloomington
    Denis Serre, Ecole Normale Superieure de Lyon, France
    (860-35-36)
• Saturday October 20, 1990, 1:45 p.m.-4:05 p.m.
  Special Session on Semigroups, II
  Room 111, Lederle Graduate Research Center
  

  • 1:45 p.m.
    The structure sheaf of a Baer-semigroup.
    Gary D. Crown*, Wichita State University
    Melvin F. Janowitz, University of Massachusetts, Amherst
    (860-06-63)
  • 2:15 p.m.
    Embeddability of functions in one-way flows.
    Abe Sklar*, Illinois Institute of Technology
    (860-39-61)
  • 2:45 p.m.
    Semigroups, ruled continua, and fixed points.
    Louis F. McAuley*, State University of New York, Binghamton
    (860-57-64)
  • 3:15 p.m.
    Discussion
• Saturday October 20, 1990, 1:45 p.m.-4:35 p.m.
  Special Session on Discrete Groups and Geometric Structures in 2, 3 and 4 Dimensions, IIA
  Room 64, Goessmann Laboratory
  

  • 1:45 p.m.
    Parabolic elements and Margulis space-times.
    Todd A. Drumm*, University of Maryland, College Park
    (860-53-23)
  • 2:15 p.m.
    A Seifert geometry for SO(p,q+1).
    Kyung Bai Lee, University of Oklahoma
    Frank Raymond*, University of Michigan, Ann Arbor
    (860-57-146)
  • 2:45 p.m.
    The biholomorphic automorphisms of Schottky space.
    Clifford J. Earle*, Cornell University
    (860-30-22)
  • 3:15 p.m.
    Projective structures with Schottky holonomy.
    Daniel Gallo*, Saint John's University
    (860-30-77)
  • 3:45 p.m.
    Two-generator discrete subgroups of PSL(2,R): The geometry of intersecting axes.
    Jane Gilman*, Rutgers University, Newark
    (860-30-83)
  • 4:15 p.m.
    Upper bounds for the Hausdorff dimension of nonergodic sets of measured foliations.
    Howard Masur*, University of Illinois, Chicago
    (860-32-84)
• Saturday October 20, 1990, 1:45 p.m.-4:35 p.m.
  Special Session on Discrete Groups and Geometric Structures in 2, 3 and 4 Dimensions, IIB
  Room 51, Goessmann Laboratory
  

  • 1:45 p.m.
    Kahler manifolds and 1/4-pinching.
    Luis Hern\'andez*, University of Chicago
    (860-53-108)
  • 2:15 p.m.
    Schottky groups with automorphisms.
    Ruben A. Hidalgo*, State University of New York, Stony Brook
    (860-99-149)
  • 2:45 p.m.
    On geometrically finite Kleinian groups.
    Irwin Kra*, State University of New York, Stony Brook
    (860-30-105)
  • 3:15 p.m.
    On holomorphic motions.
    Zbigniew Slodkowski*, University of Illinois at Chicago
    (860-32-134)
  • 3:45 p.m.
    The hyperbolic characteristic submanifold theorem.
    Bernard Maskit*, State University of New York, Stony Brook
    (860-30-87)
  • 4:15 p.m.
    Pellian reflections and continued fractions on the radical p surface.
    Mark Sheingorn*, Bernard M. Baruch College, City University of New York
    (860-11-02)
• Saturday October 20, 1990, 1:45 p.m.-4:05 p.m.
  Special Session on Lie Groups and Algebraic Groups, II
  Room 201, Lederle Graduate Research Center
  

  • 1:45 p.m.
    Infinitesimal structure of representations: Some examples.
    Roger E. Howe*, Yale University
    (860-22-14)
  • 2:15 p.m.
    Invariant theory and symplectic structure of nilpotent orbits.
    R. K. Brylinski*, Pennsylvania State University, University Park
    B. Kostant, Massachusetts Institute of Technology
    (860-22-120)
  • 2:45 p.m.
    Prolongation of g-modules.
    Gregg J. Zuckerman*, Yale University
    (860-17-15)
  • 3:15 p.m.
    Lagrangian construction of the enveloping algebra of sl_n.
    Victor Ginsburg*, Moscow State University, USSR
    (860-17-18)
  • 3:45 p.m.
    Irreducible representations of Lie superalgebras.
    Vera Serganova*, Yale University
    (860-17-147)
• Saturday October 20, 1990, 1:45 p.m.-3:35 p.m.
  Special Session on Algebraic Graph Theory, II
  Room 101, Lederle Graduate Research Center
  

  • 1:45 p.m.
    Enumeration of highly irregular trees by automorphism group order.
    Kathleen A. McKeon*, Connecticut College
    (860-05-101)
  • 2:15 p.m.
    On self-complementary graphs.
    M. S. Krishnamoorthy*, Rensselaer Polytechnic Institute
    M. McMenamin, Rensselaer Polytechnic Institute
    (860-05-85)
  • 2:45 p.m.
    Stable sets, max-cuts and quadratic 0-1 optimization.
    Jean-Marie Bourjolly*, Concordia University
    (860-49-118)
• Saturday October 20, 1990, 1:45 p.m.-4:05 p.m.
  Special Session on Ergodic Theory, II
  Room 203, Lederle Graduate Research Center
  

  • 1:45 p.m.
    An ergodic transformation with no non-trivial self-even equivalences.
    Adam Fieldsteel*, Wesleyan University
    Daniel J. Rudolph, University of Maryland, College Park
    (860-28-43)
  • 2:15 p.m.
    Kronecker-Gaussian processes and some counterexamples.
    Andr\'es del Junco*, University of Toronto
    (860-28-45)
  • 2:45 p.m.
    Uniformly sweeping out does not imply mixing.
    T. M. Adams, State University of New York, Albany
    N. A. Friedman*, State University of New York, Albany
    (860-28-38)
  • 3:15 p.m.
    A classification of the isometric extensions of a multidimensional Bernoulli shift.
    Janet Whalen Kammeyer*, United States Naval Academy
    (860-28-42)
  • 3:45 p.m.
    On the classification of Z^d-actions up to Kakutani equivalence.
    J. Roberto Hasfura*, Trinity University
    (860-28-131)
• Saturday October 20, 1990, 1:45 p.m.-4:05 p.m.
  Special Session on Aperiodicity and Order, II
  Room 124, Hasbrouck Laboratory
  

  • 1:45 p.m.
    Long range order from local rules.
    Charles Radin*, University of Texas, Austin
    (860-60-31)
  • 2:15 p.m.
    Icosahedral solids: Perfect quasicrystals or random tilings?
    David P. Divincenzo*, IBM T. J. Watson Research Center, Yorktown Heights, New York
    (860-82-33)
  • 2:45 p.m.
    High order mixing.
    Shahar Mozes*, Hebrew University, Israel
    (860-28-12)
  • 3:15 p.m.
    On the work of Godreche and Luck.
    Jean E. Taylor*, Rutgers University, New Brunswick
    (860-82-07)
  • 3:45 p.m.
    Why do real atoms form quasicrystals?
    Veit Elser*, LASSP, Cornell University
    (860-82-141)

Sunday October 21, 1990

• Sunday October 21, 1990, 7:30 a.m.-9:50 a.m.
  Special Session on Hyperbolic Manifolds, III
  Room 20, Goessmann Laboratory
  

  • 7:30 a.m.
    Kleinian groups with two parabolic generators.
    John R. Parker*, University of Maryland, College Park
    (860-30-98)
  • 8:00 a.m.
    Commutators, collars and the geometry of Mobius groups.
    F. W. Gehring*, University of Michigan, Ann Arbor
    G. J. Martin, University of Auckland, New Zealand
    (860-30-95)
  • 8:30 a.m.
    Volume estimates for hyperbolic orbifolds and manifolds.
    F. W. Gehring, University of Michigan, Ann Arbor
    G. J. Martin*, University of Auckland, New Zealand
    (860-30-96)
  • 9:00 a.m.
    Computing the Chern-Simons invariant and the eta invariant for hyperbolic 3-manifolds.
    Robert Meyerhoff*, Boston University
    (860-57-97)
  • 9:30 a.m.
    Growth functions for negatively curved and automatic groups.
    David Epstein*, University of Warwick, England
    (860-57-80)
• Sunday October 21, 1990, 7:30 a.m.-9:50 a.m.
  Special Session on Lattices, Geometry, and Combinatorics, III
  Room 103, Lederle Graduate Research Center
  

  • 7:30 a.m.
    Threshold orders.
    Kenneth P. Bogart*, Dartmouth College
    (860-06-58)
  • 8:00 a.m.
    Computer-assisted combinatorial exploration of finite posets and lattices.
    Curtis Greene*, Haverford College
    (860-05-109)
  • 8:30 a.m.
    Computers and ordered structures.
    George Markowsky*, University of Maine, Orono
    (860-06-93)
  • 9:00 a.m.
    Newman commutativity lattices.
    M. K. Bennett*, University of Massachusetts, Amherst
    Garrett Birkhoff, Harvard University
    (860-06-10)
  • 9:30 a.m.
    Newman associativity lattices.
    Garrett Birkhoff*, Harvard University
    M. K. Bennett, University of Massachusetts, Amherst
    (860-06-102)
• Sunday October 21, 1990, 7:30 a.m.-9:50 a.m.
  Special Session on Discrete Groups and Geometric Structures in 2, 3 and 4 Dimensions, III
  Room 64, Goessmann Laboratory
  

  • 7:30 a.m.
    Pleatings and depleatings of Mobius manifolds, R-trees, and measured geodesic laminations.
    Ravi S. Kulkarni*, Queens College, City University of New York
    Ulrich Pinkall, University of Berlin, Germany
    (860-53-26)
  • 8:00 a.m.
    Dirichlet and Ford domains for Kleinian groups.
    Peter Waterman*, Northern Illinois University
    (860-30-25)
  • 8:30 a.m.
    Cross-sections of the space of Schottky groups of genus two.
    David J. Wright*, Oklahoma State University, Stillwater
    (860-30-136)
  • 9:00 a.m.
    Concentration points for Fuchsian groups.
    Darryl McCullough*, University of Oklahoma
    (860-57-28)
  • 9:30 a.m.
    Discussion
• Sunday October 21, 1990, 7:30 a.m.-9:50 a.m.
  Special Session on Lie Groups and Algebraic Groups, III
  Room 201, Lederle Graduate Research Center
  

  • 7:30 a.m.
    Tensor products of modules with restricted highest weights.
    Cornelius Pillen*, University of Massachusetts, Amherst
    (860-20-133)
  • 8:00 a.m.
    Differential operators and quotient spaces.
    Gerald W. Schwarz*, Brandeis University
    (860-22-21)
  • 8:30 a.m.
    Overgroups of unipotent elements in groups of Lie type.
    Donna M. Testerman*, Wesleyan University
    (860-20-142)
  • 9:00 a.m.
    Some results on symmetric varieties.
    Aloysius G. Helminck*, North Carolina State University
    (860-22-17)
  • 9:30 a.m.
    Quantum deformations of Schubert schemes.
    V. Lakshmibai*, Northeastern University
    N. Reshetikhin, Harvard University
    (860-14-135)
• Sunday October 21, 1990, 7:30 a.m.-9:50 a.m.
  Special Session on Ergodic Theory, III
  Room 203, Lederle Graduate Research Center
  

  • 7:30 a.m.
    On the topological entropy of transitive maps of the interval.
    Melissa C. Hidalgo*, University of Hartford
    (860-58-46)
  • 8:00 a.m.
    A weak type inequality for some nonsingular transformations.
    Idris Assani*, University of North Carolina, Chapel Hill
    (860-28-41)
  • 8:30 a.m.
    Entropy of a skew product with a Z^2-action.
    Kyewon Park*, Bryn Mawr College
    (860-28-37)
  • 9:00 a.m.
    Product structure and joinings for endomorphisms, I.
    Karma Dajani, University of North Carolina, Chapel Hill
    Jane Hawkins*, University of North Carolina, Chapel Hill
    (860-28-39)
  • 9:30 a.m.
    Product structure and joinings for endomorphisms, II.
    Karma Dajani*, University of North Carolina, Chapel Hill
    Jane Hawkins, University of North Carolina, Chapel Hill
    (860-28-40)
• Sunday October 21, 1990, 7:30 a.m.-9:50 a.m.
  Special Session on Aperiodicity and Order, III
  Room 124, Hasbrouck Laboratory
  

  • 7:30 a.m.
    Old theorems about the Penrose pieces.
    John Horton Conway*, Princeton University
    (860-05-139)
  • 8:00 a.m.
    Self-similarity and randomness.
    Murad S. Taqqu*, Boston University
    (860-60-09)
  • 8:30 a.m.
    Aperiodicity and constraints.
    Hao Wang*, The Rockefeller University
    (860-05-35)
  • 9:00 a.m.
    Stabilization of quasicrystals: Energy vs. entropy.
    Sergei Burkov*, Landau Institute for Theoretical Physics, USSR and LASSP, Cornell University
    (860-82-138)
  • 9:30 a.m.
    A non-Pisot five fold symmetric tiling with complex Fourier spectrum.
    Claude Godr\`eche*, Service de Physique du Solide et de R\'esonance Magn\'etique, France
    (860-82-140)
• Sunday October 21, 1990, 8:00 a.m.-9:50 a.m.
  Special Session on Non-linear Dynamics in Mathematics and Science, III
  Room 126, Hasbrouck Laboratory
  

  • 8:00 a.m.
    A geometrical study of an equation for a floating beam.
    Alan C. Lazer*, University of Miami
    P. Joseph McKenna, University of Connecticut, Storrs
    (860-35-115)
  • 8:30 a.m.
    Elliptic KP flows.
    Emma Previato*, Boston University
    (860-58-69)
  • 9:00 a.m.
    Functional and numerical analyses of nonlinear dynamical systems.
    Peter J. Costa*, Raytheon Company, Wayland, Massachusetts
    Ruth Hampton Westlake, Raytheon Company, Wayland, Massachusetts
    (860-46-68)
  • 9:30 a.m.
    Discussion
• Sunday October 21, 1990, 8:00 a.m.-9:50 a.m.
  Special Session on Algebraic Graph Theory, III
  Room 101, Lederle Graduate Research Center
  

  • 8:00 a.m.
    Planar posets are lexicographically shellable.
    Karen L. Collins*, Wesleyan University
    (860-05-29)
  • 8:40 a.m.
    Discussion
  • 9:20 a.m.
    A degree condition for Hamiltonian cycles in t-tough graphs with t>1.
    Douglas Bauer*, Stevens Institute of Technology
    Lewis L. Lasser, Stevens Institute of Technology
    Guantao Chen, Memphis State University
    (860-05-30)
• Sunday October 21, 1990, 8:35 a.m.-9:45 a.m.
  Session on Pure Mathematics
  Room 51, Goessmann Laboratory
  

  • 8:35 a.m.
    Joint embedding for normal models of open induction.
    M. Otero*, Mathematical Institute, University of Oxford, England
    (860-03-127)
  • 8:50 a.m.
    Geodesics and bounded harmonic functions on infinite planar graphs.
    Sam Northshield*, State University of New York, College at Plattsburgh
    (860-05-128)
  • 9:05 a.m.
    Algorithmic trigonometry: Verification of numerical identities.
    Stanley Rabinowitz*, Westford, MA
    (860-12-81)
  • 9:20 a.m.
    Lattices over number fields.
    Richard Margolin*, Princeton University
    (860-20-125)
  • 9:35 a.m.
    Z_p-points of the Chevalley group scheme in a given Bruhat cell.
    Romuald Dabrowski*, Indiana University, Bloomington
    (860-20-143)
• Sunday October 21, 1990, 10:00 a.m.-11:00 a.m.
  Invited Address
  Complex hyperbolic Kleinian groups.
  Room 131, Marcus Hall
  William M. Goldman*, University of Maryland, College Park
  (860-57-72)
• Sunday October 21, 1990, 12:30 p.m.-1:30 p.m.
  Invited Address
  Two compatible symplectic structures.
  Room 131, Marcus Hall
  Henry P. McKean, Jr.*, Courant Institute of Mathematical Sciences, New York University
  (860-70-145)
• Sunday October 21, 1990, 1:45 p.m.-3:05 p.m.
  Special Session on Hyperbolic Manifolds, IV
  Room 20, Goessmann Laboratory
  

  • 1:45 p.m.
    Leafwise negative curvature of laminated 3-manifolds.
    Lee Mosher*, Rutgers University, Newark
    Ulrich Oertel, Rutgers University, Newark
    (860-57-82)
  • 2:15 p.m.
    Dirichlet domains for hyperbolic 3-manifolds.
    Jeff Weeks*, Middlebury, Vermont
    (860-57-99)
  • 2:45 p.m.
    An undetected slope in a knot manifold.
    D. Cooper, University of California, Santa Barbara
    D. D. Long*, University of California, Santa Barbara
    (860-57-129)
• Sunday October 21, 1990, 1:45 p.m.-3:35 p.m.
  Special Session on Lattices, Geometry, and Combinatorics, IV
  Room 103, Lederle Graduate Research Center
  

  • 1:45 p.m.
    Jauch-Piron attributes.
    D. J. Foulis, University of Massachusetts, Amherst
    R. J. Greechie*, Kansas State University
    G. T. R\"uttiman, University of Bern, Switzerland
    (860-06-107)
  • 2:15 p.m.
    Normal functionals, predual Banach spaces, and complemented subspaces arising from quasi manuals.
    Yewande Olubummo, Smith College
    Thurlow Cook*, University of Massachusetts, Amherst
    (860-06-112)
  • 2:45 p.m.
    Classification of attributes.
    D. Foulis*, University of Massachusetts, Amherst
    R. Greechie, Kansas State University
    G. R\"uttimann, University of Bern, Switzerland
    (860-81-59)
  • 3:15 p.m.
    A lattice product.
    Steve Seif*, University of Louisville
    (860-06-121)
• Sunday October 21, 1990, 1:45 p.m.-3:35 p.m.
  Special Session on Discrete Groups and Geometric Structures in 2, 3 and 4 Dimensions, IV
  Room 64, Goessmann Laboratory
  

  • 1:45 p.m.
    Spherical CR manifolds with amenable holonomy.
    Robert R. Miner*, University of Maryland, College Park
    (860-57-05)
  • 2:15 p.m.
    The role of quasiconformality in CR geometry.
    Adam Koranyi*, Herbert H. Lehman College, City University of New York
    (860-32-24)
  • 2:45 p.m.
    Dirichlet polyhedra for cyclic groups in complex hyperbolic space.
    Mark B. Phillips*, University of Richmond
    (860-57-75)
  • 3:15 p.m.
    Complex reflection groups acting on complex hyperbolic space.
    Kurt Sauter*, University of Michigan, Ann Arbor
    (860-57-86)
• Sunday October 21, 1990, 1:45 p.m.-3:35 p.m.
  Special Session on Lie Groups and Algebraic Groups, IV
  Room 201, Lederle Graduate Research Center
  

  • 1:45 p.m.
    Kazhdan-Lusztig conjecture for Kac-Moody algebras.
    Luis Casian*, Ohio State University, Columbus
    (860-22-88)
  • 2:15 p.m.
    On the geometric Langlands conjecture.
    Kari Vilonen*, Brandeis University
    (860-22-144)
  • 2:45 p.m.
    Representations of Chevalley groups arising from admissible lattices.
    Zongzhu Lin*, University of Washington
    (860-20-19)
  • 3:15 p.m.
    Discussion
• Sunday October 21, 1990, 1:45 p.m.-3:05 p.m.
  Special Session on Ergodic Theory, IV
  Room 203, Lederle Graduate Research Center
  

  • 1:45 p.m.
    Commuting endomorphisms of the circle.
    Aimee Johnson*, Tufts University
    Daniel J. Rudolph, University of Maryland, College Park
    (860-28-44)
  • 2:15 p.m.
    Ergodic theory on infinite measure spaces.
    S. J. Eigen*, Northeastern University
    (860-28-67)
  • 2:45 p.m.
    Fixed points for measure preserving homeomorphisms.
    V. S. Prasad*, University of Lowell
    (860-28-08)
• Sunday October 21, 1990, 1:45 p.m.-3:05 p.m.
  Special Session on Aperiodicity and Order, IV
  Room 124, Hasbrouck Laboratory
  

  • 1:45 p.m.
    Discussion

Inquiries:  meet@ams.org

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