# On equivariant Tamagawa numbers, Weil \'{e}tale cohomology and values of L-functions

Presented by:
D Burns King's College London
Date:
Thursday 3rd October 2002 - 11:30 to 12:30
Venue:
INI Seminar Room 1
Session Title:
K-theory and arithmetic
Abstract:
We show that, in certain cases, Lichtenbaum's Weil-Etale cohomology leads to a more explicit interpretation of the (equivariant) Tamagawa number conjecture. We then use this interpretation to formulate, and in certain cases also prove, a universal refinement of the well known (and seemingly rather different) conjectures of Stark, of Gross, of Tate, of Rubin and of Darmon concerning the values of derivatives of abelian L-functions.