Étale and Motivic Homotopy Theory

One of the three players in the Milnor conjectures for fields is the Witt ring and its filtration by powers of the fundamental ideal. In this talk, we exhibit a possible generalization of this filtration to Grothendieck-Witt rings of schemes: we study exterior power operations on these rings, show that the resulting (pre-)λ-structures are special, and thus obtain a so- called γ-filtration. The talk will close with a few example calculations and open questions.

Freitag, den 28. März 2014 um 11.00-12.00 Uhr, in INF288, HS2 Freitag, den 28. März 2014 at 11.00-12.00, in INF288, HS2

Der Vortrag folgt der Einladung von The lecture takes place at invitation by Alexander Schmidt, Jakob Stix