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math.OA2019
-Operator systems and crossed products
Massoud Amini, Siegfried Echterhoff, Hamed Nikpey
The purpose of this paper is to introduce a consistent notion of universal and reduced crossed products by actions and coactions of groups on operator systems and operator spaces.…
math.OA2019
Injectivity, crossed products, and amenable group actions
Alcides Buss, Siegfried Echterhoff, Rufus Willett
This paper is motivated primarily by the question of when the maximal and reduced crossed products of a --algebra agree (particularly inspired by results of Matsumura and S…