Important information regarding the recent AMS power outage.

The transformer that provides electricity to the AMS building in Providence went down on Sunday, April 22. The restoration of our email, website, AMS Bookstore and other systems is almost complete. We are currently running on a generator but overnight a new transformer should be hooked up and (fingers crossed) we should be fine by 8:00 (EDT) Wednesday morning. This issue has affected selected phones, which should be repaired by the end of today. No email was lost, although the accumulated messages are only just now being delivered so you should expect some delay.

Thanks for your patience.

AMS Sectional Meeting Program by Special Session

Current as of Tuesday, April 12, 2005 15:08:34

Program  |  Deadlines  |  Inquiries:

1989 Central Section Meeting
Chicago, IL, May 19-20, 1989
Meeting #849

Associate secretaries:
Andy R Magid, AMS

Special Session on Quadratic Forms and Real Algebraic Geometry

  • Friday May 19, 1989, 7:00 a.m.-9:50 a.m.
    Special Session on Quadratic Forms and Real Algebraic Geometry, I

    Room 342, Damen Hall

    • 7:00 a.m.
      Sums of squares in Witt rings.
      D. W. Lewis*, University College of Dublin, Republic of Ireland
    • 7:30 a.m.
      Witt kernels of algebraic extensions.
      David B. Leep*, University of Kentucky
    • 8:00 a.m.
      On the structure of the Clifford algebra over a commutative ring.
      Alexander J. Hahn*, University of Notre Dame
    • 8:30 a.m.
      Galois groups over C-fields.
      Tara L. Smith*, Ohio State University, Columbus
      J\'an Min\'a\v c, University of Western Ontario
    • 9:00 a.m.
      Informal Discussion
    • 9:30 a.m.
      Picard groups of Witt rings.
      Robert W. Fitzgerald*, Southern Illinois University, Carbondale
  • Friday May 19, 1989, 2:00 p.m.-4:50 p.m.
    Special Session on Quadratic Forms and Real Algebraic Geometry, II

    Room 342, Damen Hall

    • 2:00 p.m.
      A sup-inf-polynomially varying solution to Hilbert's $17$th problem.
      Charles N. Delzell*, Louisiana State University, Baton Rouge
    • 2:30 p.m.
      Places on *-fields and the real holomorphy ring.
      Thomas C. Craven*, University of Hawaii, Honolulu
    • 3:00 p.m.
      Orders and order closures for not necessarily formally real fields.
      Ron Brown*, University of Hawaii, Honolulu
    • 3:30 p.m.
      Witt rings and spaces of orderings of projective planes.
      Franz Kalhoff*, University of Dortmund, Federal Republic of Germany
    • 4:00 p.m.
      Signatures of higher level on rings with many units.
      M. Marshall, University of Saskatchewan
      L. Walter*, University of Saskatchewan
    • 4:30 p.m.
      Higher level orders on noncommutative rings.
      Victoria A. Powers*, Emory University
  • Saturday May 20, 1989, 7:00 a.m.-9:50 a.m.
    Special Session on Quadratic Forms and Real Algebraic Geometry, III

    Room 342, Damen Hall

    • 7:00 a.m.
      The real spectrum of higher level of a commutative ring.
      Susan Barton*, Pennsylvania State University, Delaware County Campus
    • 7:30 a.m.
      Nonarchimedean real analysis.
      Robby Robson*, Oregon State University
    • 8:00 a.m.
      Nash groups.
      J. Madden*, Indiana University, South Bend
      C. Stanton, Indiana University, South Bend
    • 8:30 a.m.
      Some new Vapnik-Chervonenkis classes.
      Gilbert Stengle*, Lehigh University
      Joseph Yukich, Lehigh University
    • 9:00 a.m.
      Spinor norms of similarities.
      D. B. Shapiro*, Ohio State University, Columbus
      I. Alarcon, Ohio State University, Columbus
    • 9:30 a.m.
      Round quadratic forms under algebraic extensions.
      Burkhard Alpers*, University of Saskatchewan
  • Saturday May 20, 1989, 2:00 p.m.-4:50 p.m.
    Special Session on Quadratic Forms and Real Algebraic Geometry, IV

    Room 342, Damen Hall

    • 2:00 p.m.
      An introduction to blenders.
      Bruce Reznick*, University of Illinois, Urbana-Champaign
    • 2:30 p.m.
      Quadratic forms over function-fields of elliptic and hyperelliptic curves.
      Jonathan E. Shick*, University of California at San Diego, La Jolla
    • 3:00 p.m.
      Automorphism groups of positive definite integral quadratic forms.
      John S. Hsia*, Ohio State University, Columbus
    • 3:30 p.m.
      Integral quadratic forms whose class and spinor genus coincide.
      Andrew G. Earnest*, Southern Illinois University, Carbondale
    • 4:00 p.m.
      Even unimodular positive definite quadratic forms over real quadratic fields.
      David C. Hung*, State University of New York, Binghamton
    • 4:30 p.m.
      Trace forms over Hilbertian and Henselian fields.
      Martin Kruskemper*, University of Saskatchewan

American Mathematical Society