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Subjects
47-XX Operator theory
47Axx General theory of linear operators
47A10 Spectrum, resolvent

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Displaying 81 – 85 of 85

Sums of idempotents and a lemma of N. J. Kalton

Graham Allan (1996)

Studia Mathematica

A lemma of Gelfand-Hille type is proved. It is used to give an improved version of a result of Kalton on sums of idempotents.

Sur le spectre d'un shift à poids opérateurs.

M. Houimdi, M. Ouali (1998)

Extracta Mathematicae

Sur les bornes d'erreur a posteriori pour les éléments propres d'opérateurs linéaires.

F. Chatelin (1979)

Numerische Mathematik

Sur les transformations additives qui conservent le spectre de surjection.

Mustapha Ech-Cherif El Kettani, El Houcine El Bouchibti (2003)

Extracta Mathematicae

Survey of some results in spectral theory obtained in Prague

Vlastimil Pták (1982)

Banach Center Publications

Currently displaying 81 – 85 of 85

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