COLUMBIA UNIVERSITY

Department of Mathematics

Number Theory: (D. Goldfeld, H. Jacquet, S.W. Zhang)
William Stein (Berkeley & Harvard)
"Visibility of Shafarevich-Tate groups"
5:30 p.m., 507 Math. Tea will be served at 5:00 p.m., 508 Math.

Samuel Eilenberg Lectures: (D. Goldfeld)
Alex Lubotzky (Hebrew University & Columbia University)
Subgroup Growth: "Zeta functions of groups"
4:00-5:15 p.m., 507 Math. Tea will be served at 3:30 p.m., 508
THE 6TH AND LAST LECTURE OF THE SERIES.

Linear and non-linear groups, linearization methods (A. Lubotzky, W. Neumann, J. Birman )
Douglas Zare
"Faithful representations of the braid group"
2:00 p.m., 405 Math.

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

Geometric Topology: (J. Birman, W. Neumann, A. Champanerkar)
Walter Neumann
"Abelian covers of links of surface singularities"
1:15 p.m., 507 Math.

Algebraic Geometry: (M. Thaddeus)
Sorin Popescu (Stony Brook)
"Exterior algebra methods and syzygies"
2:30 p.m., 417 Math.