Some new refinements of generalized numerical radius inequalities for Hilbert space operators

DOI10.1007/s00009-021-01927-xzbMath1496.47016OpenAlexW4205957017MaRDI QIDQ2067216

Fuad Kittaneh, Kais Feki

Publication date: 17 January 2022

Published in: Mediterranean Journal of Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s00009-021-01927-x

zbMATH Keywords

semi-inner productinequalitypositive operatornumerical radiusseminorm\(A\)-adjoint operator

Mathematics Subject Classification ID

Norms (inequalities, more than one norm, etc.) of linear operators (47A30) Hermitian and normal operators (spectral measures, functional calculus, etc.) (47B15) Subnormal operators, hyponormal operators, etc. (47B20) Numerical range, numerical radius (47A12) Positive linear operators and order-bounded operators (47B65)

Related Items (5)

Generalized upper bounds estimation of numerical radius and norm for the sum of operators ⋮ Bounds for \(\mathbb{A} \)-numerical radius based on an extension of \(A\)-Buzano inequality ⋮ Generalized \(A\)-numerical radius of operators and related inequalities ⋮ Some numerical radius inequality for several semi-Hilbert space operators ⋮ Further inequalities for the \(\mathbb{A}\)-numerical radius of certain \(2 \times 2\) operator matrices

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