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Amenable actions on ill-behaved simple C*-algebras
Published 16 May 2024 in math.OA and math.GR | (2405.10191v2)
Abstract: By combining R{\o}rdam's construction and the author's previous construction, we provide the first examples of amenable actions of non-amenable groups on simple separable nuclear C*-algebras that are neither stably finite nor purely infinite. For free groups, we also provide unital examples. We arrange the actions so that the crossed products are still simple with both a finite and an infinite projection.
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