Colloquium abstracts

S. Lichtenbaum
Brown University, USA
March 2, 2010

Zeta-functions and Weil-etale cohomology of number rings:  We will define Weil-etale Euler characteristics and explain how they can be used to describe the behavior of the Dedekind zeta-function at s=0. We will also discuss how this might be extended to other integral values.