Stability for crossed product C*-algebras associated to actions of discrete subgroups of SL(2, R) on R^2 \ {0}

Jacopo Bassi (University of Münster)

Tuesday 16th October, 2018 16:00-17:00 Maths 311B


Stability for hereditary subalgebras of the crossed product C*-algebra associated to the horocycle flow on a compact quotient of SL(2,R) can be deduced by looking at the range of the unique dimension function. As a consequence, for every cocompact subgroup of SL(2,R), the C*-algebra associated to its action on R^2 \ {0} is stable. In this talk I will explain how this result can be deduced from the original dynamics.

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