A note on norm estimates of the numerical radius

DOI10.3792/pjaa.84.5zbMath1144.15021OpenAlexW2011687993MaRDI QIDQ2482942

Takashi Sano

Publication date: 30 April 2008

Published in: Proceedings of the Japan Academy. Series A (Search for Journal in Brave)

Full work available at URL: https://projecteuclid.org/euclid.pja/1201186677

zbMATH Keywords

quadratic operatornumerical radiusnorm estimatesnormaloid matrix

Mathematics Subject Classification ID

Norms of matrices, numerical range, applications of functional analysis to matrix theory (15A60) Hermitian, skew-Hermitian, and related matrices (15B57) Numerical range, numerical radius (47A12)

Cites Work

• Numerical range and accretivity of operator products
• The numerical range of a product. II
• The Numerical Radius of a Nilpotent Operator on a Hilbert Space
• A numerical radius inequality and an estimate for the numerical radius of the Frobenius companion matrix
• Norms and the spectral radius of matrices

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