COLUMBIA UNIVERSITY

Department of Mathematics

Special Probability: (I. Karatzas)
Fridrik M. Baldursson (Nat. Economic Institute of Iceland & Univ. of Iceland)
"Prices vs quantities: the irrelevance of irreversibility"
NOTE DATE, TIME & LOCATION: 11:30 a.m., 311 Fayerweather.

Group Theory: (H. Bass, G. Rosenberg)
Gabriel Rosenberg
"The double of a quasi-graph"
4:00-5:30 p.m., 528 Math.

Number Theory: (D. Goldfeld, H. Jacquet, S.W. Zhang)
Stephen S. Kudla (Maryland)
"Generating functions for cycles on modular arithmetic surfaces"
5:30 p.m., 507 Math. Tea will be served at 5:00 p.m., 508 Math.

Joint Berkeley-Columbia Analysis (VIDEO-CONFERENCE): (D.H. Phong, M. Zworski)
Steve Zelditch (Johns Hopkins)
"Almost everything about (almost) holomorphic sections"
5:10 p.m., 234 Horace Mann, Teachers College, Columbia University in NYC.
2:10 p.m., 127 Dwinelle, Berkeley in California.

Algebraic Geometry: (R. Friedman, M. Thaddeus)
Olivier Debarre (Strasbourg and Harvard)
"Lefschetz theorems for degeneracy loci"
NOTE TIME: 2:00 p.m., 417 Math. LAST SEMINAR FOR THE SEMESTER.

Geometric Topology - DOUBLE HEADER I: (J. Birman, B. Mangum)
Oliver Dasbach (Duesseldorf)
"Legendrian knot theory for knot theorists"
1:00 p.m., 507 Math.

Geometric Topology - DOUBLE HEADER II: (J. Birman, B. Mangum)
Tahl Nowik
"Finite order q-invariants of immersions of surfaces into 3-space"
2:00 p.m., 507 Math. LAST SEMINAR FOR THE SEMESTER.

* New York Seminar on Arithmetic Geometry: (L. Szpiro, S.W. Zhang)
Raymond Hoobler (CUNY, City College)
"Applications of the Bloch-Ogus sequence to arithmetic surfaces"
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.