Commuting-Square Subfactors and Central Sequences
Operator Algebras
2008-08-20 v1
Abstract
Let be a finite-index infinite-depth hyperfinite subfactor and a free ultrafilter of the natural numbers. We show that if this subfactor is constructed from a commuting square then the central sequence inclusion has infinite Pimnser-Popa index. We will also demonstrate this result for certain infinite-depth hyperfinite subfactors coming from groups.
Cite
@article{arxiv.0808.2487,
title = {Commuting-Square Subfactors and Central Sequences},
author = {Richard Burstein},
journal= {arXiv preprint arXiv:0808.2487},
year = {2008}
}
Comments
18 pages