A more general method to classify up to equivariant KK-equivalence
Rasmus Bentmann (Maths Institut Georg-August-Universitat Gottingen)
Tuesday 4th March, 2014 16:00-17:00 Maths 416
Using a homological invariant together with an obstruction class in a certain Ext²-group, we may classify objects in triangulated categories that have projective resolutions of length two. This new method applies to actions of the circle group on C*-algebras, to C*-algebras over finite unique path spaces, and to graph C*-algebras with finitely many ideals.