Crossed products of operator systems |
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Authors: | Samuel J Harris Se-Jin Kim |
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Institution: | University of Waterloo, Department of Pure Mathematics, Waterloo, Ontario N2L 3G1, Canada |
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Abstract: | In this paper we introduce the crossed product construction for a discrete group action on an operator system. In analogy to the work of E. Katsoulis and C. Ramsey, we describe three canonical crossed products arising from such a dynamical system. We describe how these crossed product constructions behave under G-equivariant maps, tensor products, and the canonical -covers. We show that hyperrigidity is preserved under two of the three crossed products. Finally, using A. Kavruk's notion of an operator system that detects -nuclearity, we give a negative answer to a question on operator algebra crossed products posed by Katsoulis and Ramsey. |
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Keywords: | Operator systems Operator algebras Crossed products Nuclearity |
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