Gysin maps in Balmer-Witt theory, by Alexander Nenashev

We introduce twisted Thom operators and the deformation to the normal cone isomorphisms in the derived Witt theory. Using these ingredients, we define push-forward maps of Witt groups along closed embeddings of smooth varieties and prove their standard properties, a most delicate of which turns out to be the functoriality of such maps.

• 0760.bib (229 bytes)
• gmw.dvi (139048 bytes) [October 30, 2005]
• gmw.dvi.gz (51180 bytes)
• gmw.pdf (212689 bytes)
• gmw.ps.gz (219020 bytes)