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.

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