关于 $C^*$-单群作用的居中 $C^*$-子代数
算子代数
2019-02-08 v2
摘要
我们证明对于一大类 -单群 在单位 -代数 上的作用 (包括具有平凡顺从根的双曲群的任何不忠实作用),每一个居中 -子代数 ,,都具有形式 ,其中 是 的单位 --子代数。
引用
@article{arxiv.1811.11381,
title = {On Intermediate $C^*$-subalgebras of $C^*$-simple Group Actions},
author = {Tattwamasi Amrutam},
journal= {arXiv preprint arXiv:1811.11381},
year = {2019}
}
备注
We have added more examples of plump subgroups, in particular showed that every non-elementary subgroup of a non-torsion convergence group is plump. We have also proved a similar result in von Neumann algebraic setting. This version also includes an appendix with Yongle Jiang containing an example of a faithful action of a $C^*$-simple group, for which every intermediate $C^*$-algebra splits