On the derived Witt groups of schemes

Algebra Seminar
Monday, December 3, 2012 - 3:05pm
1 hour (actually 50 minutes)
Skiles 005
University of Georgia
The Witt group of a scheme is a globalization to schemes of the classical Witt group of a field. It is a part of a cohomology theory for schemes called the derived Witt groups. In this talk, we introduce two problems about the derived Witt groups, the Gersten conjecture and a finite generation question for arithmetic schemes, and explain recent progress on them.