Groups and Operator Algebras Seminar

Speaker: Mikael Rørdam

Title: Popa’s averaging property for automorphisms on C*-algebras

Abstract: We give a characterization of automorphisms on a C*-algebra satisfying a Dixmier type averaging condition, introduced by Popa. We demonstrate how this property of automorphisms, or actions, leads to greatly simplified proofs – as well as extensions of – some known results about crossed product C*-algebras.