Further inequalities for the \(\mathbb{A}\)-numerical radius of certain \(2 \times 2\) operator matrices

DOI10.1515/gmj-2022-2204OpenAlexW4309837308MaRDI QIDQ2697750

Satyajit Sahoo, Kais Feki

Publication date: 13 April 2023

Published in: Georgian Mathematical Journal (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/2006.09312

zbMATH Keywords

inequalitypositive operatornumerical radiusoperator matrix\(A\)-adjoint operator

Mathematics Subject Classification ID

Hilbert and pre-Hilbert spaces: geometry and topology (including spaces with semidefinite inner product) (46C05) Numerical range, numerical radius (47A12) General (adjoints, conjugates, products, inverses, domains, ranges, etc.) (47A05) Positive linear operators and order-bounded operators (47B65)

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