Numerical range submultiplicity

DOI10.1080/03081087.2015.1005567zbMath1394.47009OpenAlexW2003735551MaRDI QIDQ3455684

Mohamed Boumazgour, Mohamed Barraa

Publication date: 11 December 2015

Published in: Linear and Multilinear Algebra (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1080/03081087.2015.1005567

zbMATH Keywords

numerical rangespectrum\(C^\ast\)-algebrasbounded operator

Mathematics Subject Classification ID

Spectrum, resolvent (47A10) Numerical range, numerical radius (47A12) General theory of (C^*)-algebras (46L05)

Related Items (2)

Certain properties involving the unbounded operators \(p(T)\), \(TT^\ast\), and \(T^\ast T\); and some applications to powers and \textit{nth} roots of unbounded operators ⋮ Right (or left) invertibility of bounded and unbounded operators and applications to the spectrum of products

Cites Work

• Approximation by normal elements with finite spectra in \(C^*\)-algebras of real rank zero
• Commutativity up to a factor for bounded and unbounded operators
• The numerical range of a product
• The numerical range of a product. II
• Unilaterally Invertible Normals are Invertible
• Essential numerical range of elementary operators

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