More on the Normality of the Unbounded Product of Two Normal Operators

Abstract

Let $A$ and $B$ be two -non necessarily bounded- normal operators. We give new conditions making their product normal. We also generalize a result by Deutsch et al on normal products of matrices.

arXiv commentThis paper has been withdrawn for a critical technical reason

Cited by in corpus (1)

• The Sum of Two Unbounded Linear Operators: Closedness, Self-adjointness and Normality