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Noncommutative joinings II
Groups, Geometry, and Dynamics ( IF 0.6 ) Pub Date : 2021-04-07 , DOI: 10.4171/ggd/606
Jon Bannon 1 , Jan Cameron 2 , Kunal Mukherjee 3
Affiliation  

This paper is a continuation of the authors' previous work on noncommutative joinings, and contains a study of relative independence of W$^*$-dynamical systems. We prove that, given any separable locally compact group $G$, an ergodic W$^{*}$-dynamical $G$-system $\mathfrak{M}$ with compact subsystem $\mathfrak{N}$ is disjoint relative to $\mathfrak{N}$ from its maximal compact subsystem $\mathfrak{M}_{K}$ if and only if $\mathfrak{N}\cong\mathfrak{M}_{K}$. This generalizes recent work of Duvenhage, which established the result for $G$ abelian.

中文翻译:

非交换连接 II

这篇论文是作者先前关于非交换连接的工作的延续,并且包含对 W$^*$-动力系统的相对独立性的研究。我们证明,给定任何可分离的局部紧致群$G$,具有紧致子系统$\mathfrak{N}$ 的遍历W$^{*}$-动力学$G$-system $\mathfrak{M}$ 是不相交的从其最大紧致子系统 $\mathfrak{M}_{K}$ 到 $\mathfrak{N}$ 当且仅当 $\mathfrak{N}\cong\mathfrak{M}_{K}$。这概括了 Duvenhage 最近的工作,该工作确定了 $G$ 阿贝尔的结果。
更新日期:2021-04-07
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