Factors of type II1 without non-trivial finite index subfactors
Factors of type II1 without non-trivial finite index subfactors
复制标题
没有非平凡有限指数子因子的 II1 类因子
DOI:
--
复制
发表时间:
2006
期刊:
影响因子:
--
通讯作者:
S. Vaes
中科院分区:
文献类型:
--
作者:
S. Vaes
We call a subfactor N C M trivial if it is isomorphic with the obvious inclusion of N in M n (C) ⊗ N. We prove the existence of type II 1 factors M without non-trivial finite index subfactors. Equivalently, every M-M-bimodule with finite coupling constant, both as a left and as a right M-module, is a multiple of L 2 (M). Our results rely on the recent work of Ioana, Peterson and Popa, who proved the existence of type II 1 factors without outer automorphisms.