A Baum-Connes conjecture for certain monster groups. Joint with Paul Baum and Rufus Willett

Jeudi 21 mai 2015 14:00-15:00 - Erik Guentner

Résumé : The failure of exactness (in the sense of C*-algebra theory) is at the heart of counterexamples to the Baum-Connes conjecture. To account for this, we reformulate the conjecture by introducing a new crossed product functor. For exact groups the conjecture is unchanged, and all confirming examples remain confirming examples for the reformulated conjecture. However, some of the known expander-based counterexamples to the original conjecture become confirming examples for the reformulated conjecture.

Lieu : bât. 425 - 121-123

A Baum-Connes conjecture for certain monster groups. Joint with Paul Baum and Rufus Willett  Version PDF