Strong Singularity of Singular Masas in II_1 Factors

Allan Sinclair, Roger Smith, Stuart White +1

A singular masa $A$ in a ${\mathrm{II}}_1$ factor $N$ is defined by the property that any unitary $w\in N$ for which $A=wA{w}^{\ast }$ must lie in $A$. A strongly singular masa $A$ is one that…