COLUMBIA UNIVERSITY

Department of Mathematics

Number Theory: (D. Goldfeld, H. Jacquet, S.W. Zhang)
Shou-Wu Zhang
"Gross-Zagier formula with characters"
5:30 p.m., 507 Math. Tea will be served at 5:00 p.m., 508 Math.
FIRST SEMINAR OF THE SEMESTER.

Workshop in Arithmetic Geometry: (D. Goldfeld, S.W. Zhang)
Adrian Diaconu
"The theory of the double Dirichlet L- series (Con't)"
1:00 - 2:30 p.m., 307 Math.

Samuel Eilenberg Lectures: (D. Goldfeld)
Alex Lubotzky (Hebrew University & Columbia University)
Subgroup Growth: "Subgroup growth and the congruence subgroup problem"
4:00-5:15 p.m., 507 Math. Tea will be served at 3:30 p.m., 508

Linear and non-linear groups, linearization methods (A. Lubotzky, W. Neumann, J. Birman )
Dan Siegel (Oxford)
"The classification of finite simple groups and linearization of infinite groups"
2:00 p.m., 405 Math.

Probability: (I. Karatzas)
Hiroaki Morimoto (Ehime, Japan)
"On a combined control and stopping time game"
11:00-12:15 p.m., 520 Math.
Tea and Coffee will be served at 10:30 a.m., 621 Math.

Geometric Topology: (J. Birman, W. Neumann, A. Champanerkar)
Lee Mosher (Rutgers)
"Which locally compact groups have discrete, cocompact subgroups
which are free of finite rank ?"
1:15 p.m., 507 Math.

Algebraic Geometry: (M. Thaddeus)
Michael Thaddeus
"Mirror symmetry, Langlands duality, integrable systems, and commuting elements of Lie groups"
2:30 p.m., 417 Math.