科研之友
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摘要
Let (A, G, alpha) be a groupoid dynamical system. We show that if G is assumed to be measurewise amenable and the section algebra A = Gamma(0) (G((0)), A) is nuclear, then the associated groupoid crossed product is also nuclear This generalizes an earlier result of Green for crossed products by locally compact groups. We also extend a related result of Kirchberg to groupoids. In particular, if A is exact and G is amenable, then we show that A G is exact.
- 出版日期2015
