COLUMBIA UNIVERSITY
 Department of Mathematics
 S E M I N A R S


WEEK OF FEBRUARY 25, 2008

MONDAY, FEBRUARY 25

Physics Colloquium:
Neil Gehrels (NASA GSFC)
 "Gamma ray burst discoveries with the swift mission"
4:15 p.m., 428 PUPIN HALL

TUESDAY, FEBRUARY 26

Applied Mathematics Colloquium: (D. Keyes)
 Greg Stephens (Princeton)
"Dimensionality and dynamics in the behavior of C elegans"
2:45 p.m., 214 Mudd
Columbia Discrete Math Seminar:  (D. Bayer, M. Chudnovsky)
 NO SEMINAR THIS WEEK.

 Mathematics of Finance Practitioners Seminar: (M. Smirnov)
 Rick Klotz (Greenwich Capital)
"U.S. fixed income markets"
7:40-9:00 p.m., 207 Math.

WEDNESDAY, FEBRUARY 27

Colloquium: (M.T. Wang, E. Urban, P. Daskalopoulos)
 Erez Lapid (Hebrew University)
"From volume of polytopes to Arthur's trace formula"
5:00 p.m., 520 Math. Tea will be served at 4:30 p.m., 508 Math

THURSDAY, FEBRUARY 28

Applied Mathematics Colloquium: (D. Keyes)
 Marco Avellaneda (Courant)
 "Financial mathematics"
 11:00 a.m., Sindeband East/414 CEPSR

Geometry and Analysis: (Z. Hou, N. Sesum)
Ye Li (Princeton)
"Smoothing metrics with bounded Ricci curvature in dimension 4"
4:30 p.m., 507 Math.

Joint COLUMBIA-CUNY-NYU (Rotating among the 3 Universities)
Number Theory (D. Goldfeld, V. Kolyvagin,  L. Szpiro, Y. Tschinkel,  A. Venkatesh,  S. Zhang)
DOUBLE HEADER ONE:
David Ben-Zvi (Univ. of Texas, Austin)
"Introduction to the geometric Langlands program"
Room 1314: 4:00-5:00 p.m.
 Tea will be served in the Math Lounge on the 13th floor at 5:00 p.m.
DOUBLE HEADER TWO:
Kartik Prasanna  (University of Maryland)
"Algebraic cycles and exotic Heegner points"
Room 1314: 5:30-7:00 p.m.
NYU, Courant Institute 13th Floor

 Mathematics of Finance Practitioners Seminar: (M. Smirnov)
 Rick Klotz (Greenwich Capital)
"U.S. fixed income markets" - continued
7:40-9:00 p.m., 207 Math.

FRIDAY, FEBRUARY 29

DOUBLE HEADER I: Joint Number Theory Workshop: (D. Goldfeld, E. Urban)
Rachel Ollivier (ENS, Paris)
"Mod p representations of GL(2) and modules on Hecke-algebras:
   From the finite case to the p-adic case."
10:00 a.m., 203 Math.

DOUBLE HEADER II: Joint Number Theory Workshop: (D. Goldfeld, E. Urban)
Luis Dieulefait (University of Barcena and Harvard)
"Lifts, compatible families, Galois conjugates: tools for the modularity of Galois representations"
11:00 a.m., 203 Math.

Probability: (I. Karatzas)
Isaac Meijlison (Columbia & Tel Aviv)
"On the adjustment coefficient, drawdowns, and Lundbergtype bounds for random walk"
11:00 a.m., 903 SSW Bldg (1255 Amsterdam Avenue-btwn. 121st & 122nd Street)
Room 903, 9th Floor in the School of Social Work
Coffee and tea will be served at 10:30 a.m., Statistics Departmental Lounge on the 10th floor of that building.

 Symplectic Geometry and Gauge Theory: (C. Manolescu, D. McDuff, M. Khovanov, P.S. Ozsváth, R. Lipshitz)
 Weimin Chen (U. Massachusetts, Amherst)
"Group actions on homotopy K3s"
1:00 p.m., 507 Math.

 Samuel Eilenberg Lectures:
Michael Harris (Columbia & ) Universite Paris 7)
“Arithmetic Automorphic Forms on Unitary Groups and Related Galois Representatives"
1:00 p.m., 207 Math.
Tea will be served at 3:00 p.m., 508 Math.
Geometric Topology:  (D. Thurston)
 Olga Plamanevskaya (SUNY, Stony Brook)
"Transverse knots and their branched covers"
2:15 p.m., 507 Math.

Joint Columbia-Courant-Princeton Algebraic Geometry Seminar at Columbia: (J. de Jong, M. Thaddeus)
Mikhail Kapranov (Yale)
"Noncommutative differential operators, unparametrized paths and Hodge structures"
 12 Noon, 507 Math.
Lunch - 1:00 p.m.
James McKernan (MIT)
"The cone theorem revisited"
2:30 p.m., 417 Math.
Kiran Kedlaya (MIT)
"Measuring wild ramification using rigid geometry"
4:00 p.m., 417 Math.

Samuel Eilenberg Lectures:
Charles L. Fefferman (Columbia & Princeton)
“Whitney Extension Problems and Interpolation"
3:30-5:30 p.m., 312 Math.
Tea will be served at 3:00 p.m., 508 Math.