Rigidity results for von Neumann algebras arising from mixing extensions of profinite actions of groups on probability spaces
Rigidity results for von Neumann algebras arising from mixing extensions of profinite actions of groups on probability spaces
复制标题
由概率空间上群的有限作用的混合扩展引起的冯·诺依曼代数的刚性结果
DOI:
10.1007/s00208-020-02064-8
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发表时间:
2020
影响因子:
1.4
通讯作者:
Das, Sayan
中科院分区:
文献类型:
--
作者:
Chifan, Ionut;Das, Sayan
Motivated by Popa’s seminal work Popa (Invent Math 165:409-45, 2006), in this paper, we provide a fairly large class of examples of group actionssatisfying the extended Neshveyev–Størmer rigidity phenomenon Neshveyev and Størmer (J Funct Anal 195(2):239-261, 2002): wheneveris a free ergodic pmp action and there is a-isomorphismsuch thatthen the actionsandare conjugate (in a way compatible with). We also obtain a complete description of the intermediate subalgebras of all (possibly non-free) compact extensions of group actions in the same spirit as the recent results of Suzuki (Complete descriptions of intermediate operator algebras by intermediate extensions of dynamical systems, To appear in Comm Math Phy. ArXiv Preprint: arXiv:1805.02077 , 2020). This yields new consequences to the study of rigidity for crossed product von Neumann algebras and to the classification of subfactors of finite Jones index.
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DOI:
10.24033/asens.2462
发表时间:
2018-09
期刊:
Annales Scientifiques de l'École Normale Supérieure
影响因子:
--
作者:
R. Boutonnet;A. Ioana;J. Peterson
通讯作者:
R. Boutonnet;A. Ioana;J. Peterson
影响因子:
1.7
作者:
R. Boutonnet
通讯作者:
R. Boutonnet
影响因子:
0.9
作者:
S. Popa
通讯作者:
S. Popa
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
Daniel Drimbe
通讯作者:
Daniel Drimbe
DOI:
--
发表时间:
2017
期刊:
International Congress of Mathematicans
影响因子:
--
作者:
A. Ioana
通讯作者:
A. Ioana