Yves van Gennip (University of Nottingham) Y.Vangennip@nottingham.ac.uk
Stefan Gille (University of Alberta)
Unramified (Milnor-) Witt groups
Abstract:
We will present a proof that the unramified (Milnor-)Witt groups are a birational invariant of regular and proper schemes over a field of characteristic not 2. This has some funny consequences, for instance the Witt group is a birational invariant of surfaces. I will then discuss some results around the Gersten conjecture and presentations of the Milnor-Witt group of a regular localring.
The University of NottinghamUniversity Park Nottingham, NG7 2RD
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