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B-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:scopusB-fredholm spectra of drazin invertible operators and applications
ArticleAbstract: In this article, we consider Drazin invertible operators for study of the relationship between theirPalabras claves:B-Fredholm spectra, Drazin inverse, Drazin invertible operator, Generalized a-Weyl’s theoremAutores:Elvis Aponte, Jhixon Macías, José E. Sanabria, José SotoFuentes:scopusA Fredholm theory on Krein spaces and its application to Weyl-type theorems and homogeneous equations
ArticleAbstract: In this paper, we review the approach presented by An and Heo on the study of Weyl-type theorems forPalabras claves:Fredholm theory, Homogeneous equation, Krein space, Weyl’s theoremAutores:Buelvas Y.O., José E. Sanabria, Ojito D.P.Fuentes:scopusA new approach of soft rough sets and a medical application for the diagnosis of Coronavirus disease
ArticleAbstract: Rough set and soft set theories presents the mathematical foundations for studying decision making pPalabras claves:Decision Making, Information System, soft pre-rough sets, soft rough sets, Soft setsAutores:Abad F., José E. Sanabria, Rojo K.Fuentes:scopusA 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:scopusA note on strongly δθ-I-continuous functions
ArticleAbstract: In this article, we investigate some properties of strongly δθ-I-continuous functions and other typePalabras claves:Ideals, δ-local function, δθ-I-open setAutores:José E. Sanabria, Lozada-Yavina R., Tormet J.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:scopus