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AMS Sectional Meeting Program by Special Session

Current as of Tuesday, April 12, 2005 15:08:45


Program  |  Deadlines  |  Inquiries:  meet@ams.org

1990 Fall Central Section Meeting
Denton, TX, November 2-3, 1990
Meeting #861

Associate secretaries:
Andy R Magid, AMS amagid@ou.edu

Special Session on Arithmetic Groups

  • Friday November 2, 1990, 1:30 p.m.-3:50 p.m.
    Special Session on Arithmetic Groups, I

    Room 417, University Union Building

    • 1:30 p.m.
      An algebraic realization of the cohomology of a Hilbert modular variety.
      B. Brent Gordon*, University of Oklahoma
      (861-11-204)
    • 2:00 p.m.
      Informal Discussion
    • 2:30 p.m.
      Modular symbols and the Steinberg representation.
      Mark S. Reeder*, University of Oklahoma
      (861-57-138)
    • 3:00 p.m.
      Basic sharblies, ideal skeleta of SL(n,R)/SO(n,R), and a generalization of "reduction to unimodular symbols."
      Lee Rudolph*, Clark University
      (861-57-155)
    • 3:30 p.m.
      Informal Discussion
  • Saturday November 3, 1990, 7:30 a.m.-9:50 a.m.
    Special Session on Arithmetic Groups, II

    Room 417, University Union Building

    • 7:30 a.m.
      Cohomology of the symplectic group SP_4(Z).
      Alan B. Brownstein*, Rutgers University, Newark
      (861-11-43)
    • 8:00 a.m.
      The "coadjoint" representation of PSp_4(2).
      Ronnie Lee, Yale University
      Steven H. Weintraub*, Louisiana State University, Baton Rouge
      (861-20-07)
    • 8:30 a.m.
      A central series of Torelli groups and its relation to invariants of 3-manifolds.
      Ronnie Lee*, Yale University
      (861-55-218)
    • 9:00 a.m.
      Commensurability of isospectral arithmetic hyperbolic 2 and 3 manifolds.
      Alan W. Reid*, Ohio State University, Columbus and University of Aberdeen, Scotland
      (861-11-116)
    • 9:30 a.m.
      Short geodesics in arithmetic hyperbolic 3-manifolds.
      Alan W. Reid, Ohio State University, Columbus and University of Aberdeen, Scotland
      Walter D. Neumann*, Ohio State University, Columbus
      (861-57-42)
  • Saturday November 3, 1990, 2:00 p.m.-3:50 p.m.
    Special Session on Arithmetic Groups, III

    Room 417, University Union Building

    • 2:00 p.m.
      Informal Discussion
    • 2:30 p.m.
      Examples of discrete subgroups of SU(2,1).
      William M. Goldman*, University of Maryland, College Park
      (861-57-41)
    • 3:00 p.m.
      Compactifications of quotient spaces of GL(n,R).
      Douglas Grenier*, Johns Hopkins University
      (861-22-40)
    • 3:30 p.m.
      Finite upper half planes.
      Audrey Terras*, University of California at San Diego, La Jolla
      (861-11-85)
Inquiries:  meet@ams.org


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