New numerical radius inequalities for operator matrices and a bound for the zeros of polynomials

DOI10.1007/s43036-022-00232-yOpenAlexW4310275954MaRDI QIDQ2106155

Soumia Soltani, Abdelkader Frakis, Fuad Kittaneh

Publication date: 8 December 2022

Published in: Advances in Operator Theory (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1007/s43036-022-00232-y

zbMATH Keywords

inequalityself-adjoint operatoroperator normnumerical radius

Mathematics Subject Classification ID

Norms (inequalities, more than one norm, etc.) of linear operators (47A30) Numerical range, numerical radius (47A12) Zeros of polynomials, rational functions, and other analytic functions of one complex variable (e.g., zeros of functions with bounded Dirichlet integral) (30C15) Real polynomials: location of zeros (26C10)

Related Items (1)

Further refinements of Davis-Wielandt radius inequalities

Cites Work

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• Estimates for the numerical radius and the spectral radius of the Frobenius companion matrix and bounds for the zeros of polynomials
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• Numerical radius inequalities for \(n \times n\) operator matrices
• Matrix Analysis
• Numerical radius inequalities for Hilbert space operators
• A novel numerical radius upper bounds for 2 × 2 operator matrices

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