COLUMBIA UNIVERSITY

Department of Mathematics

Group Theory: (H. Bass, G. Rosenberg)
Michael Weingart
"How is this Bass-Serre tree different from all others?"
4:00-5:30 p.m., 528 Math.

Number Theory - DOUBLE HEADER: (D. Goldfeld, H. Jacquet, S.W. Zhang)
Yuri Tschinkel (University of Illinois, Chicago)
"Height zeta functions of functions of rational varieties"
4:00 p.m., 507 Math.

Number Theory - DOUBLE HEADER: (D. Goldfeld, H. Jacquet, S.W. Zhang)
Alexander Goncharov (Brown)
"Galois symmetrics of the fundamental group of projective line minus 3 points"
5:30 p.m., 507 Math. Tea will be served at 5:00 p.m., 508 Math.

Geometry and Analysis I: (M. Kuranishi, I. Krichever)
NO SEMINAR THIS WEEK.

Probability: (I. Karatzas)
NO SEMINAR THIS WEEK.

Geometric Topology: (J. Birman, B. Mangum)
Ivan Dynnikov (Maryland)
"Plane sections of 3-periodic surfaces. S.P.Novikov's problem"
1:15 p.m., 507 Math.

Algebraic Geometry: (R. Friedman, M. Thaddeus)
Mikhail Kapranov (Northwestern)
"The elliptic curve in the S-duality theory and Eisenstein series for Kac-Moody groups"
1:30 p.m., 417 Math.

* New York Seminar on Arithmetic Geometry: (L. Szpiro, S.W. Zhang)
Jérôme Pesenti (Paris-Sud)
"The effective conductor"
2:30 p.m., NOTE LOCATION: Graduate Center, Rm 1538
The Graduate Center of CUNYis located in the Graybar Building, 420 Lexington Avenue.
* This seminar will alternate between the Graduate Center of CUNY and the Math Dept.
of Columbia University