AMS Sectional Meeting Program by Special Session
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1991 Western Section Meeting
Santa Barbara, CA, November 910, 1991
Meeting #870
Associate secretaries:
Lance W Small, AMS
lwsmall@ucsd.edu
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
(8701142)

8:30 a.m.
Recent results and problems in quadratic forms.
Shmuel Friedland*, University of Illinois, Chicago
(8701144)

9:00 a.m.
Positive definite Zlattices defined by finite groups.
Alexander J. Hahn*, University of Notre Dame
(8701138)

9:30 a.m.
Some problems in integral quadratic forms.
J. S. Hsia*, Ohio State University, Columbus
(8701110)

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
(8701143)

2:45 p.m.
Representations by indefinite unimodular lattices.
Donald G. James*, Pennsylvania State University, University Park
(8701105)

3:15 p.m.
A structure theorem for a pair of quadratic forms.
Youyu Shao*, Ohio State University, Columbus
(8701135)

3:45 p.m.
Minimal norm Jordan splitting in dyadic local fields.
Fei Xu*, Ohio State University, Columbus
(8701111)

4:15 p.m.
Integral quadratic forms and Enriques surfaces.
V. V. Nikulin*, Steklov Mathematical Institute, USSR and University of Notre Dame
(8701162)

4:45 p.m.
Some arithmetic relations on the representation numbers of quadratic forms.
Lynne H. Walling*, University of Colorado, Boulder
(8701122)

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 packingsKelper's conjecture and beyond.
WuYi Hsiang*, University of California, Berkeley
(8705181)

8:30 a.m.
Eigenvalues of symmetric integer matrices.
Dennis R. Estes*, University of Southern California
(8701140)

9:00 a.m.
Weak *orderings on *fields.
K. H. Leung*, National University of Singapore, Republic of Singapore
(8701201)

9:30 a.m.
Formal groups and Dirichlet Lfunctions.
Nancy Childress*, Arizona State University
Jeff Stopple, University of California, Santa Barbara
(8701241)

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
(8701639)

2:30 p.m.
Constructions of valued division algebras.
Al Sethuraman*, California State University, Northridge
(8701633)

3:00 p.m.
Q(i)division rings and admissibility.
Steven G. Liedahl*, University of California, Los Angeles
(8701237)
Inquiries: meet@ams.org