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arXiv 1909.04710math.OA
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分次C* 代数-代数与扭广群C* 代数-代数

Graded C*-algebras and twisted groupoid C*-algebras

Jonathan Brown, Adam Fuller, David Pitts, Sarah Reznikoff

摘要:

设$C^*$ -代数被紧阿贝尔群作用.证明了如果作用的不动点代数包含一个满足适当正则性条件的Cartan子代数$D$,则$A$是扭群胚的约化$C^*$ -代数.我们进一步证明了嵌入$D \hookrightarrow A$是唯一确定的扭曲。这些结果推广了Renault关于$C^*$ -代数的Cartan子代数的结果.

英文摘要:

Let $C^*$-algebra that is acted upon by a compact abelian group. We show that if the fixed-point algebra of the action contains a Cartan subalgebra $D$ satisfying an appropriate regularity condition, then $A$ is the reduced $C^*$-algebra of a groupoid twist. We further show that the embedding $D \hookrightarrow A$ is uniquely determined by the twist. These results generalize Renault's results on Cartan subalgebras of $C^*$-algebras.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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