A classification of all finite index subfactors for a class of group-measure space II1 factors

作者：Deprez Steven^*; Vaes Stefaan

来源：Journal of Noncommutative Geometry, 2011, 5(4): 523-545.

DOI：10.4171/JNCG/85

• Rigidity for von Neumann algebras
• II1 factors
• subfactors
• group-measure space construction

We provide a amily of group-measure space II1 factors for which all finite index subfactors can be explicitly listed. In particular, the set of all indices of irreducible subfactors can be computed. Concrete examples show that this index set can be any set of natural numbers that is closed under taking divisors and least common multiples.

• 出版日期2011