Generalized Spectrum and a Problem of Apostol

DOI10.2307/2160133zbMath0787.47003OpenAlexW4241989341MaRDI QIDQ4201621

Mostafa Mbekhta

Publication date: 1 September 1993

Full work available at URL: https://doi.org/10.2307/2160133

zbMATH Keywords

boundary of the spectrumreduced minimum modulus of an operator

Mathematics Subject Classification ID

Linear operators defined by compactness properties (47B07) Spectrum, resolvent (47A10) Perturbation theory of linear operators (47A55) (Semi-) Fredholm operators; index theories (47A53)

Cites Work

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• The reduced minimum modulus
• Generalisation de la decomposition de kato aux opérateurs paranormaux et spectraux

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