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arXiv 1301.4585math.OA
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交叉积与MF代数

Crossed Products and MF algebras

Weihua Li, Stefanos Orfanos

摘要:

证明了单位元的可生成MF代数A与离散的可生成的顺从剩余有限群G的交叉积AxG是MF代数,只要其作用是概周期的.这推广了Hadwin和Shen的一个结果。我们还构造了两个BDF Ext半群不是群的交叉积C* 代数-代数的例子。

英文摘要:

We prove that the crossed product AxG of a unital finitely generated MF algebra A by a discrete finitely generated amenable residually finite group G is an MF algebra, provided that the action is almost periodic. This generalizes a result of Hadwin and Shen. We also construct two examples of crossed product C*-algebras whose BDF Ext semigroups are not groups.

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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