Geometric description of the connecting homomorphism for Witt groups
with Paul Balmer
Documenta Mathematica, 14, 2009, p. 525-550
(1st online appearance of the preprint on the 21-7-2008)
Under general geometric hypotheses, we give a way to construct the connecting homomorphism in the localization long exact sequence for Witt groups, involving only pull-backs and push-forwards.
In another preprint, we explain how to use this result to compute the Witt groups of Grassmann varieties.
