Browsing by Author "ROSAS, ENNIS"
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Bioperation approach to Przemski's decomposition theorems
Carpintero, Carlos; Nirmala, Rajendren; Rajesh, N.; ROSAS, ENNIS (Corporación Universidad de la Costa, 2020)Przemski introduced D(?, s)set, D(?, b)set, D(p, sp)set, D(p, b) set and D(b, sp)set to obtain several decompositions of continuity. In this paper, we extend these sets via bioperation and obtain new decompositions ... 
Characterizations of upper and lower (α, β, θ, δ, I)continuous multifunctions
ROSAS, ENNIS; Carpintero, Carlos; Sanabria, Jose; Vielma, J. (Corporación Universidad de la Costa, 2021)Given a multifunction F : (X; _ ) ! (Y; _), _; _ operators on (X; _ ), _; _ operators on (Y; _) and I a proper ideal on X. The purpose of the present paper is to introduce, study and characterize upper and lower (_; _; ... 
Contracontinuous functions defined through ΛIclosed sets
SANABRIA, JOSÉ; GRANADOS, CARLOS; ROSAS, ENNIS; CARPINTERO, CARLOS (Corporación Universidad de la Costa, 2021)We introduce some variants of contracontinuity in terms of ΛIclosed sets, namely contraΛIcontinuous, contra quasiΛIcontinuous and contra ΛIirresolute functions. The relationships between these functions are investigated ... 
New types of locally connected spaces via clopen set
ROSAS, ENNIS; namiq, sarhad (Corporación Universidad de la Costa, 2021)In this paper, we define and study a new type of connected spaces called λcoconnected space. It is remarkable that the class of λconnected spaces is a subclass of the class of λcoconnected spaces. We discuss some ... 
On contra λsicontinuous functions and their applications
Granados, Carlos; Sanabria, José; ROSAS, ENNIS; Carpintero, Carlos (Corporación Universidad de la Costa, 2021)In this work, we introduce and study the classes of contra ΛsIcontinuous,contra quasiΛsIcontinuous and contra ΛsIirresolute functions in a topological spaceendowed with an ideal. We investigate the relationships among ... 
On minimal λcoopen sets
ROSAS, ENNIS (Corporación Universidad de la Costa, 2020)We introduce and discuss the notions of minimal λcoopen sets in topological spaces. We establish some of it basic fundamental properties of minimal λcoopen. We show that the notions of minimal open sets and minimal ... 
On the hereditary character of certain spectral properties and some applications
Carpintero, Rafael; ROSAS, ENNIS; García, Orlando; Sanabria, José; Malaver, Andrés (Corporación Universidad de la Costa, 2021)In this paper we study the behavior of certain spectral properties of an operator T on a proper closed and Tinvariant subspace W ⊆ X such that T n(X) ⊆ W, for some n ≥ 1, where T ∈ L(X) and X is an infinitedimensional ... 
On λ D − R0 And λ D − R1 Spaces
namiq, sarhad; ROSAS, ENNIS (Corporación Universidad de la Costa, 2020)In this paper we introduce the new types of separation axioms called λ D − R0 and λ D − R1 spaces, by using λ Dopen set. The notion λ D − R0 and λ D − R1 spaces are introduced and some of their properties are investigated. 
SIconvergence of sequences
Guevara, Andrés; Sanabria, José; ROSAS, ENNIS (Universidad de la Costa, 2020)In this article, we use the notions of a semiopen set and topological ideal, in order to deﬁne and study a new variant of the classical concept of convergence of sequences in topological spaces, namely, the SIconvergence. ... 
Sobre las descomposiciones de continuidad usando bioperaciones
Schnorr, Carlos Eduardo; ROSAS, ENNIS (Corporación Universidad de la Costa, 20210513)En este espacio propiciado por el Departamento de Ciencias Naturales y Exactas, primeramente se habla un poco sobre la historia de las descomposiciones y se explica porqué los conjuntos abiertos generalizados juegan un ...