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dc.creatorTajmouati, A.
dc.creatorAbkari, M.
dc.creatorKarmouni, M.
dc.date2018-03-15
dc.date.accessioned2019-11-14T12:00:57Z
dc.date.available2019-11-14T12:00:57Z
dc.identifierhttps://www.revistaproyecciones.cl/article/view/2784
dc.identifier.urihttps://revistaschilenas.uchile.cl/handle/2250/113604
dc.descriptionIn this paper, we investigate the limit points set of surjective and approximate point spectra of upper triangular operator matrices . We prove that σ*(MC) ∪ W=σ*(A)∪ σ*(B) where W is the union of certain holes in σ*(MC), which happen to be subsets of σ lgD(B) ∩ σrgD(A), σ* ∈ {σlgD, σrgD}  are the limit points set of surjective and approximate point spectra. Furthermore, several sufficient conditions for σ* (MC) = σ* (A)∪σ* (B) holds for every C ∈ ℬ(Y,X) are given.en-US
dc.formatapplication/pdf
dc.languageeng
dc.publisherUniversidad Católica del Norte.es-ES
dc.relationhttps://www.revistaproyecciones.cl/article/view/2784/2354
dc.rightsDerechos de autor 2018 Proyecciones. Journal of Mathematicses-ES
dc.sourceProyecciones. Journal of Mathematics; Vol 37 No 1 (2018); 119-131en-US
dc.sourceProyecciones. Revista de Matemática; Vol. 37 Núm. 1 (2018); 119-131es-ES
dc.source0717-6279
dc.source0716-0917
dc.subjectSurjective spectrumen-US
dc.subjectApproximate point spectrumen-US
dc.subjectGeneralized Drazin spectrumen-US
dc.subjectSingle-valued extension propertyen-US
dc.subjectOperator matricesen-US
dc.titleGeneralized Drazin-type spectra of Operator matrices.en-US
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typeArtículo revisado por pareses-ES


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