COLUMBIA UNIVERSITY - Department of Mathematics

Number Theory: (D. Goldfeld, H. Jacquet, S.W. Zhang)
Toshiaki Suzuki (IAS)
"Psi-operations of automorphic forms and Shimura correspondence"
5:30 p.m., 507 Math. Tea will be served at 5:00 p.m., 508 Math.

Edgar R. Lorch Lecture: (Math. Dept. and Sigma Xi)
Tom Spencer (IAS)
"Random surfaces, the free field, and two-dimensional statistical mechanics"
4:30 p.m., 312 Math. Tea will be served at 3:45 p.m., 508 Math.

Applied Mathematics Colloquim: (C.K. Chu), jointly sponsored by the Applied Mathematics Division, Applied Physics Department and the Department of Mathematics
Yan Yong (Florida Atlantic)
"New Study of incompressible turbulent flows based on a unilateral averaging scheme"
4:30 p.m., 214 S.W. Mudd

Geometry and Analysis: (M. Kuranishi)
Mariko Arisawa (Wisconsin, Madison)
"On ergodic control problems in stochastic systems"
2:30 p.m., 507 Math.

Working Seminar - Trees and Related Topics: (N. Benakli, Y. Glasner, S. Mokhtari-Sharghi)
Gabriel Rosenberg
"Trees and SL2" - continuation
6:30 p.m., 507 Math.

Probability: (I. Karatzas)
Garud N. Iyengar (Stanford)
"On the impact of friction in investment"
11:00 a.m., 520 Math.

Algebraic Geometry: (R. Friedman)
Zhiqin Lu
"On the variation of Hodge structures of Calabi-Yau three-folds - continuation"
1:10 p.m., 405 Math.

Geometric Topology: (J. Birman, B. Mangum)
Jennifer Schultens (Emory)
"The tunnel number of the sum of n knots is at least n"
1:15 p.m., 507 Math.

Working Seminar-Syzygies and Geometry: (D. Bayer, H. Pinkham, S. Popescu)
Hara Charalambous
"The Rees algebra and regularity"
3:00 p.m., 507 Math.