Operator algebras seminar

Speaker: Claire Debord (Clermont-Ferrand).

Title: Blowup and deformation groupoids related to index problems.

Abstract: We will present natural constructions of Lie groupoids coming from deformation and blowup. We will see that these constructions enable one to recover many known constructions of Lie groupoids involved in index theory.  These constructions give rise to several extensions of C*-algebras related to index problems. We compute the corresponding K-theory maps. It is a joint work with Georges Skandalis.