Citation:
C B, A S. On the characterization of some distinguishedclasses of Hilbert space operators. Acta Sci. Math. (Szeged). 2018;84 :611–627.
 | acta_2018.pdf | 207 KB |
Abstract:
In this note, we present several characterizations for some distinguishedclasses of bounded Hilbert space operators (self-adjoint operators, normal
operators, unitary operators, and isometry operators) in terms of operator
inequalities.