Y. F. Ortíz-Castillo

most citedCategorical properties on the hyperspace of nontrivial convergent sequences

4 citations · 7 across the 3 of their papers we have counts for

collaborators

3 papers

math.GN2017★ 3 cited

Small Cardinals and the Pseudocompactness of Hyperspaces of Subspaces of $β ω$

Y. F. Ortiz-Castillo, V. O. Rodrigues, A. H. Tomita

We study the relations between a generalization of pseudocompactness, named $(κ, M)$ -pseudocompactness, the countably compactness of subspaces of $β ω$ and the pseudocompactness of…

math.GN2016★ 4 cited

Categorical properties on the hyperspace of nontrivial convergent sequences

S. Garcia-Ferreira, R. Rojas-Hernandez, Y. F. Ortiz-Castillo

In this paper, we shall study categorial properties of the hyperspace of all nontrivial convergent sequences $S_{c} (X)$ of a Freéch-Urysohn space $X$ , this hyperspace is eq…

math.GN2016

$σ$ -Ideals and outer measures on the real line

S. García-Ferreira, A. H. Tomita, Y. F. Ortiz-Castillo

A {\it weak selection} on $R$ is a function $f : [R]^{2} \to R$ such that $f ({x, y}) \in {x, y}$ for each ${x, y} \in [R]^{2}$ . In this article, w…

Small Cardinals and the Pseudocompactness of Hyperspaces of Subspaces of βω

Categorical properties on the hyperspace of nontrivial convergent sequences

σ-Ideals and outer measures on the real line

Small Cardinals and the Pseudocompactness of Hyperspaces of Subspaces of $β ω$

$σ$ -Ideals and outer measures on the real line