On operators satisfying \(T^{*}|T^2|T\geq T^{*}|T|^{2}T\)
The authors introduce the class \({\mathcal Q}{\mathcal A}\) of operators \(T\) on Hilbert space that satisfy the inequality \(T^*| T^2| T\geq T^*| T| ^2T\) and study properties of such operators.
scientific article; zbMATH DE number 5078017