Spektrum, numerischer Wertbereich und ihre Maximumprinzipien in Banachalgebren

DOI10.1007/BF01155698zbMath0186.19701OpenAlexW2027914508MaRDI QIDQ2536737

Bernd G. Schmidt

Publication date: 1970

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

Full work available at URL: https://eudml.org/doc/153997

zbMATH Keywords

functional analysis

Related Items (3)

Maximum theorems for vector valued holomorphic functions ⋮ Bounded groups and norm-Hermitian matrices ⋮ Über die Ecken des numerischen Wertebereichs in einer Banachalgebra. (On vertices of a numerical value domain in a Banach algebra.)

Cites Work

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• Geometrical properties of the unit sphere of Banach algebras
• Eine metrische Kennzeichnung der selbstadjungierten Operatoren
• Über den numerischen Wertebereich eines Operators
• Spectra of products and numerical ranges
• Conditions implying normality in Hilbert space
• A necessary and sufficient condition that an operator be normal
• Semi-Inner-Product Spaces
• The closure of the numerical range of an operator as spectral set
• On the Characterization of Spectral Operators
• A characterization of multiplicative linear functionals in complex Banach algebras
• On a Class of Operators

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