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A note on preservation of generalized fredholm spectra in berkani’s sense
ArticleAbstract: In this paper, we study the relationships between the spectra derived from B-Fredholm theory correspPalabras claves:B-Fredholm theory, Fredholm theory, Generalized spectra, Restrictions of operators, Single-valued extension propertyAutores:Carpintero C., Gutiérrez A., José E. Sanabria, Rosas E.Fuentes:scopusA note on preservation of spectra for two given operators
ArticleAbstract: We study the relationships between the spectra derived from Fredholm theory corresponding to two givPalabras claves:multiplication operator, Restriction of an operator, Semi-Fredholm spectra, Spectral propertyAutores:Carpintero C., Gutiérrez A., José E. Sanabria, Rosas E.Fuentes:scopusB-Browder spectra and localized SVEP
ArticleAbstract: In this paper we study the relationships between the B-Browder spectra and some other spectra originPalabras claves:B-Fredholm theory, Localized SVEP, semi B-Browder spectraAutores:Carpintero C., Garcia O., José E. Sanabria, Rosas E.Fuentes:scopusContra-continuous functions defined through Λ<inf>I</inf>-closed sets
ArticleAbstract: We introduce some variants of contra-continuity in terms of ΛI-closed sets, namely contra-ΛIcontinuoPalabras claves:Function -continuous function I, Ideal, Local function, Λ -closed set-continuous I, Λ -set IAutores:Carpintero C., Granados C., José E. Sanabria, Rosas E.Fuentes:scopusCHARACTERIZATIONS OF UPPER AND LOWER (α, β, θ, δ, I)-CONTINUOUS MULTIFUNCTIONS
ArticleAbstract: Let (X, τ) and (Y, σ) be topological spaces in which no separation axioms are assumed, unless explicPalabras claves:(α, I)-continuous multifunctions, P -continuous multifunctions, β, δ, θAutores:Carpintero C., Jorge E. Vielma, José E. Sanabria, Rosas E.Fuentes:scopusAlmost contra (I, J)-continuous multifunctions
ArticleAbstract: The purpose of the present paper is to introduce, study and characterize the upper and lower almostPalabras claves:Contra (I, J)-continuous multifunctions, I-regular closed set, I-regular open set, Upper almost contra (I, J)-continuous multifunctions, Weakly (I, J)-continuous multifunctionsAutores:Carpintero C., José E. Sanabria, Rosas E.Fuentes:scopusGeneralized Weyl's theorems for polaroid operators
ArticleAbstract: In this paper we establish necessary and sufficient conditions on bounded linear operators for whichPalabras claves:Generalized Weyl's theorems, Polaroid operators, Semi B-Fredholm operatorAutores:Carpintero C., Garcia O., José E. Sanabria, Muñoz D., Rosas E.Fuentes:scopusSpaces α-sg-T <inf>i</inf>, i = 0, 1, 2, 3
ArticleAbstract: Let (X,τ) be a topological space and α be a monotone operator-associated with τ. A subset A of X isPalabras claves:Generalized α Semi closure, Generalized α Semi interior, α Semi Kernel, α sg-regularAutores:Carpintero C., Jorge E. Vielma, Rosas E.Fuentes:scopusStrong variations of Weyl and Browder type theorems for direct sums and restrictions
ArticleAbstract: In this paper, we study the stability under direct sums and restrictions of some strong variations oPalabras claves:Direct sums, Property (V ) E, Restrictions, Semi-Fredholm operatorAutores:Carpintero C., Garcia O., José E. Sanabria, Rosas E., Vasquez L.Fuentes:scopusThe further unified theory for modifications of λ-closed sets and gΛ-sets using minimal structures
ArticleAbstract: We introduce and study two new notions of sets called (Λ, mn)-closed sets and gΛ mn-sets, which arePalabras claves:(Λ, mn)-closed, gΛ -set mn, m-structure, mng-closedAutores:Carpintero C., José E. Sanabria, Rosas E.Fuentes:scopus