Decomposition theorems for certain C*-crossed products
1983 ◽
Vol 94
(2)
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pp. 265-275
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Keyword(s):
Let G be an abelian discrete group, A a unital C*-algebra and an action of G on A, i.e. (A, G,) is a C*-dynamical system. Let K denote the kernel ker of and put R = G/K. The main purpose of this article is to determine the roles of K and R in the crossed product G A. This goal is achieved in Section 2, where we prove that G A is *-isomorphic to a twisted crossed product of R with C*(K) A with respect to the action 1 and a 2-cocycle related to the 2-cocycle determined by the extension G of R by K. Here is the obvious action of R on A.
2019 ◽
Vol 71
(5)
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pp. 1103-1125
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Keyword(s):
2019 ◽
Vol 150
(5)
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pp. 2368-2378
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2015 ◽
Vol 158
(3)
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pp. 399-417
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Keyword(s):
Keyword(s):
Keyword(s):