COLUMBIA UNIVERSITY

Department of Mathematics

S E M I N A R S -

WEEK OF FEBRUARY 22, 1999

MONDAY, FEBRUARY 22

Group Theory: (H. Bass, G. Rosenberg)
Hyman Bass
"The ultimate quotient graph of a tree"
4:00-5:30 p.m., 528 Math.

Number Theory: (D. Goldfeld, H. Jacquet, S.W. Zhang)
Alexander Borisov (Pennsylvania)
"Convolution structures and arithmetic cohomology"
5:30 p.m., 507 Math. Tea will be served at 5:00 p.m., 508 Math.

THURSDAY, FEBRUARY 25

Geometry and Analysis I: (M. Kuranishi, I. Krichever)
Victor M. Buchstaber (Moscow & Steklov)
"Functional equations in mathematical physics"
2:30 p.m., 507 Math.

FRIDAY, FEBRUARY 26

Probability: (I. Karatzas)
Wendell Fleming (Brown)
"Some problems of large-time asymptotics for nearly deterministic Markov processes"
11:00 a.m., 520 Math.

Algebraic Geometry: (R. Friedman, M. Thaddeus)
Alexander Polishchuk (Harvard)
"Triple products on elliptic curves"
1:30 p.m., 417 Math.

Geometric Topology: (J. Birman, B. Mangum)
Lev Rozansky (Yale)
"Vassiliev invariants and a search for topology beyond the Alexander polynomial"
NOTE TIME: 4:00 p.m., 507 Math.