A unifying approach to Weyl type theorems for Banach space operators

Pietro Aiena, Jesús R. Guillén, Pedro Peña

Risultato della ricerca: Articlepeer review

12 Citazioni (Scopus)


Weyl type theorems have been proved for a considerably large number of classes of operators. In this paper, by introducing the class of quasi totally hereditarily normaloid operators, we obtain a theoretical and general framework from which Weyl type theorems may be promptly established for many of these classes of operators. This framework also entails Weyl type theorems for perturbations f(T+K), where K is algebraic and commutes with T, and f is an analytic function, defined on an open neighborhood of the spectrum of $T+K, such that f is non constant on each of the components of its domain.
Lingua originaleEnglish
pagine (da-a)371-384
Numero di pagine14
RivistaIntegral Equations and Operator Theory
Stato di pubblicazionePublished - 2013

All Science Journal Classification (ASJC) codes

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