Refining the upper bound for the numerical radius of Hilbert space operators

DOI10.1142/S1793557122501340OpenAlexW3210133634MaRDI QIDQ5876754

Z. Heydarbeygi, Unnamed Author

Publication date: 2 February 2023

Published in: Asian-European Journal of Mathematics (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1142/s1793557122501340

zbMATH Keywords

inequalityoperator normnumerical radius

Mathematics Subject Classification ID

Norms (inequalities, more than one norm, etc.) of linear operators (47A30) Numerical range, numerical radius (47A12)

Cites Work

• Unnamed Item
• New estimates on numerical radius and operator norm of Hilbert space operators
• Some numerical radius inequalities for Hilbert space operators
• Some inequalities for the Euclidean operator radius of two operators in Hilbert spaces
• Upper and lower bounds for the numerical radius with an application to involution operators
• Better bounds on the numerical radii of Hilbert space operators
• A numerical radius inequality involving the generalized Aluthge transform
• Notes on some spectral radius and numerical radius inequalities
• On upper and lower bounds of the numerical radius and an equality condition
• A numerical radius inequality and an estimate for the numerical radius of the Frobenius companion matrix
• Numerical radius inequalities for Hilbert space operators
• New estimates for the numerical radius of Hilbert space operators

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