A Sharp Kato-Rosenblum Type Theorem for Unbounded n-Tuples

Rishabh Bhutani, Dan Virgil Voiculescu

We prove a generalization for commuting $n$-tuples of unbounded self-adjoint operators and the Lorentz $(n,1)$ ideal,$n\ge 3$, of the Kato-Rosenblum theorem. The result is derived…