A NOTE ON GÂTEAUX DIFFERENTIALS OF HERMITIAN ELEMENTS IN BANACH ALGEBRAS

DOI10.1515/dema-2008-0418zbMath1175.47006OpenAlexW1143622288MaRDI QIDQ3606538

Christoph Schmoeger, Gerd Herzog

Publication date: 26 February 2009

Published in: Demonstratio Mathematica (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1515/dema-2008-0418

zbMATH Keywords

numerical rangeHermitian elementnormalized state

Mathematics Subject Classification ID

Numerical range, numerical radius (47A12)

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