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A 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: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:scopusOn A generalization of strongly η -convex functions via fractal sets
ArticleAbstract: The purpose of this paper is to study a generalization of strongly η-convex functions using the locaPalabras claves:Convex function, Fractal set, Generalized Strongly η -Convex Function, Strongly η -Convex FunctionAutores:José E. Sanabria, Robles Z., Sánchez R.V.C.Fuentes:scopusMinimal open sets on generalized topological space
ArticleAbstract: We introduce the notion of minimal open sets in a generalized topological space (X μ). We investigatPalabras claves:Generalized topology, Minimal μ-open sets, μ-pre-Hausdorff spaceAutores:Carpintero C., José E. Sanabria, Rosas E., Salas-Brown M.Fuentes:scopusWeighted composition operators between two different weighted sequence spaces
ArticleAbstract: We give simple criteria which characterize the symbols u, ϕ defining continuous and compact weightedPalabras claves:Banach sequence spaces, compactness, weighted composition operatorsAutores:Carpintero C., José E. Sanabria, Ramos-Fernández J.C.Fuentes:scopusS-I-Convergence of sequences
ArticleAbstract: In this article, we use the notions of a semi-open set and topological ideal, in order to define andPalabras claves:I-convergence, Irresolute function, S-I-convergence, Semi-closure, Semi-compactness, Semi-continuous function, Semi-open setsAutores:Guevara A., José E. Sanabria, Rosas E.Fuentes:scopusS-paracompactness in ideal topological spaces
ArticleAbstract: In this paper, we study the notion of S-paracompact spaces in ideal topological spaces. We provide sPalabras claves:Almost-paracompact, Countably I-compact, I-paracompact, Ideal, Perfect functions, S-paracompact, Semi-openAutores:Carpintero C., Garcia O., José E. Sanabria, Rosas E., Salas-Brown M.Fuentes:scopus