Generalized a-Weyl's theorem and the single-valued extension property
- Autores: Mohamed Amouch
- Localización: Extracta mathematicae, ISSN-e 0213-8743, Vol. 21, Nº 1, 2006, págs. 51-66
- Idioma: inglés
- Títulos paralelos:
- Teorema de a-Weyl generalizado y la propiedad de extensión univaluada
- Enlaces
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Resumen
Let T be a bounded linear operator acting on a Banach space X such that T or T* has the SVEP. We prove that the spectral mapping theorem holds for the semi-essential approximate point spectrum ¿SBF-+ (T); and we show that generalized a-Browder's theorem holds for f(T) for every analytic function f defined on an open neighbourhood U of [sigma](T): Moreover, we give a necessary and sufficient condition for such T to obey generalized a-Weyl's theorem. An application is given for an important class of Banach space operators.
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