Further Hilbert-Schmidt Numerical Radius Inequalities for 2 × 2 Operator Matrices
Soumia Aici, Abdelkader Frakis, Fuad Kıttaneh
Abstract
We give several bounds for the Hilbert-Schmidt numerical radii of 2 × 2 operator matrices. Some of these bounds are refinements of the existing ones.
Topics & Concepts
MathematicsOperator matrixOperator (biology)Hilbert spaceRADIUSPure mathematicsMathematical analysisCombinatoricsComputer scienceBiochemistryTranscription factorGeneRepressorChemistryComputer securityMatrix Theory and AlgorithmsHolomorphic and Operator TheoryMathematical Inequalities and Applications