**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.