Date & Time: Tuesday, 12th April, 4-5 pm

Venue: Ramanujan Hall

Title:Grothendieck-Witt groups and projective modules

Speaker: Jean Fasel of EPFL, Lausanne.

Abstract: We will present new developments in the theory of Grothendieck-Witt groups (aka Hermitian K-theory), and then give some nice applications. In particular, we will sketch a proof of Suslin's conjecture that stably free modules of rank d-1 over a smooth affine algebra of dimension d over an algebraically closed field are free.