Abstract
We show that any type $\mathrm{III}_1$ factor with separable predual satisfying Connes' Bicentralizer Property (CBP) has a singular maximal abelian $\ast$-subalgebra that is the range of a normal conditional expectation. We also investigate stability properties of CBP under finite index extensions/restrictions of type $\mathrm{III}_1$ factors.
Information
Digital Object Identifier: 10.2969/aspm/08010109