COLUMBIA UNIVERSITY

Department of Mathematics

S E M I N A R S -

Week of September 29, 1997



MONDAY, September 29

Number Theory: (D. Goldfeld, H. Jacquet, S. Zhang)
Dihua Jiang (Yale)
"Non-vanishing of the central critical values of the triple product L-functions"
5:30 p.m., 507 Math. Tea will be served at 5:00 p.m., 508 Math.

TUESDAY, September 30

Group Theory: (H. Bass, S. Mokhtari-Sharghi)
Hyman Bass, "Group actions on trees, and applications"
9:00 a.m., 507 Math.

WEDNESDAY, October 1

New York Seminar on Geometry and Physics: (B. Greene)
SPEAKER: TBA
TITLE: TBA
TIME & LOCATION: TBA

FRIDAY, October 3

Working Seminar-Critical Values of L-functions: (S. Zhang)
* POSTPONED TO OCT. 10 *

Geometric Topology: (J. Birman, B. Mangum)
Ted Stanford (US Naval Academy-Annapolis)
"Knots, modulo the derived series of the pure braid group"
1:15 p.m., 507 Math.