arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1503.01388math.OA
收藏

一类 III 型因子的唯一素分解与双中心化子问题

Unique prime factorization and bicentralizer problem for a class of type III factors

Cyril Houdayer, Yusuke Isono

AI总结:

针对包含自由 Araki-Woods 因子的大类von Neumann代数,证明了张量积的唯一素分解及Connes双中心化子问题的正解。

摘要:

我们证明,当 $m \geq 1$ 且 $M_1, \dots, M_m$ 是我们称为 $\mathcal C_{(\text{AO})}$ 的一大类 von Neumann 代数中的非顺从因子时(该类包含所有自由 Araki-Woods 因子),张量积因子 $M_1 \mathbin{\overline{\otimes}} \cdots \mathbin{\overline{\otimes}} M_m$ 在指标置换后,仍保持整数 $m$ 及每个因子 $M_i$(直到稳定同构)。我们的方法统一了 [OP03, Is14] 中的唯一素分解(UPF)结果,并且当 $M_1, \dots, M_m$ 是自由 Araki-Woods 因子时,提供了新的 UPF 结果。为获得上述 UPF 结果,我们证明 Connes 的双中心化子问题对于类 $\mathcal C_{(\text{AO})}$ 中的所有 ${\rm III_1}$ 型因子具有正解。

英文摘要:

We show that whenever $m \geq 1$ and $M_1, \dots, M_m$ are nonamenable factors in a large class of von Neumann algebras that we call $\mathcal C_{(\text{AO})}$ and which contains all free Araki-Woods factors, the tensor product factor $M_1 \mathbin{\overline{\otimes}} \cdots \mathbin{\overline{\otimes}} M_m$ retains the integer $m$ and each factor $M_i$ up to stable isomorphism, after permutation of the indices. Our approach unifies the Unique Prime Factorization (UPF) results from [OP03, Is14] and moreover provides new UPF results in the case when $M_1, \dots, M_m$ are free Araki-Woods factors. In order to obtain the aforementioned UPF results, we show that Connes's bicentralizer problem has a positive solution for all type ${\rm III_1}$ factors in the class $\mathcal C_{(\text{AO})}$.

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。

↑