Numerical ranges of powers of hermitian elements

DOI10.1017/S0017089500006315zbMath0612.46045OpenAlexW2124533687MaRDI QIDQ3752928

C. M. McGregor, M. J. Crabb

Publication date: 1986

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

Full work available at URL: https://doi.org/10.1017/s0017089500006315

zbMATH Keywords

numerical rangeunital Banach algebra

Mathematics Subject Classification ID

Numerical range, numerical radius (47A12) General theory of topological algebras (46H05)

Cites Work

• Unnamed Item
• Some extremal problems in the theory of numerical ranges
• On Bernstein's Inequality and the Norm of Hermitian Operators
• The Numerical Range in Banach Algebras and Complex Functions of Exponential type

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