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AMS Sectional Meeting Program by Special Session

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1991 Western Section Meeting
Santa Barbara, CA, November 9-10, 1991
Meeting #870

Associate secretaries:
Lance W Small, AMS

Special Session on Quadratic Forms

  • Saturday November 9, 1991, 8:00 a.m.-9:50 a.m.
    Special Session on Quadratic Forms, I

    ROOM 1119, Girvetz Hall

    • 8:00 a.m.
      Distribution of genera of integral quadratic forms among rational classes.
      Andrew G. Earnest*, Southern Illinois University, Carbondale
    • 8:30 a.m.
      Recent results and problems in quadratic forms.
      Shmuel Friedland*, University of Illinois, Chicago
    • 9:00 a.m.
      Positive definite Z-lattices defined by finite groups.
      Alexander J. Hahn*, University of Notre Dame
    • 9:30 a.m.
      Some problems in integral quadratic forms.
      J. S. Hsia*, Ohio State University, Columbus
  • Saturday November 9, 1991, 2:15 p.m.-5:05 p.m.
    Special Session on Quadratic Forms, II

    ROOM 1119, Girvetz Hall

    • 2:15 p.m.
      On primitive spinor exceptional representations by ternary quadratic forms.
      David C. Hung*, State University of New York, Binghamton
    • 2:45 p.m.
      Representations by indefinite unimodular lattices.
      Donald G. James*, Pennsylvania State University, University Park
    • 3:15 p.m.
      A structure theorem for a pair of quadratic forms.
      Youyu Shao*, Ohio State University, Columbus
    • 3:45 p.m.
      Minimal norm Jordan splitting in dyadic local fields.
      Fei Xu*, Ohio State University, Columbus
    • 4:15 p.m.
      Integral quadratic forms and Enriques surfaces.
      V. V. Nikulin*, Steklov Mathematical Institute, USSR and University of Notre Dame
    • 4:45 p.m.
      Some arithmetic relations on the representation numbers of quadratic forms.
      Lynne H. Walling*, University of Colorado, Boulder
  • Sunday November 10, 1991, 8:00 a.m.-9:50 a.m.
    Special Session on Quadratic Forms, III

    ROOM 1119, Girvetz Hall

    • 8:00 a.m.
      Spherical geometry and sphere packings-Kelper's conjecture and beyond.
      Wu-Yi Hsiang*, University of California, Berkeley
    • 8:30 a.m.
      Eigenvalues of symmetric integer matrices.
      Dennis R. Estes*, University of Southern California
    • 9:00 a.m.
      Weak *-orderings on *-fields.
      K. H. Leung*, National University of Singapore, Republic of Singapore
    • 9:30 a.m.
      Formal groups and Dirichlet L-functions.
      Nancy Childress*, Arizona State University
      Jeff Stopple, University of California, Santa Barbara
  • Sunday November 10, 1991, 2:00 p.m.-3:20 p.m.
    Special Session on Quadratic Forms, IV

    ROOM 1119, Girvetz Hall

    • 2:00 p.m.
      Noncommutative prufer rings.
      Patrick J. Morandi*, New Mexico State University, Las Cruces
    • 2:30 p.m.
      Constructions of valued division algebras.
      Al Sethuraman*, California State University, Northridge
    • 3:00 p.m.
      Q(i)-division rings and admissibility.
      Steven G. Liedahl*, University of California, Los Angeles