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On unitary groups of crossed product von Neumann algebras
Journal of Functional Analysis ( IF 1.7 ) Pub Date : 2024-02-01 , DOI: 10.1016/j.jfa.2024.110343
Yasuhito Hashiba

We consider the tracial crossed product algebra arising from a trace preserving action of a discrete group Λ on a tracial von Neumann algebra . For a unitary subgroup , we study when this can be conjugated into in . We provide a general sufficient condition for this to happen. Our result generalizes which treats the case when is the group von Neumann algebra .

中文翻译:

关于叉积冯·诺依曼代数的酉群

我们考虑由离散群 Λ 在踪迹冯诺依曼代数上的迹保留作用产生的踪迹交叉积代数。对于酉子群,我们研究何时可以将其共轭为 in 。我们为这种情况的发生提供了一般的充分条件。我们的结果概括了当 是群冯诺依曼代数时的情况。
更新日期:2024-02-01
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