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pro vyhledávání: '"Camargo, Javier"'
Autor:
Camargo, Javier, Macías, Sergio
We consider properties of the diagonal of a continuum that are used later in the paper. We continue the study of $T$-closed subsets of a continuum $X$. We prove that for a continuum $X$, the statements: $\Delta_X$ is a nonblock subcontinuum of $X^2$,
Externí odkaz:
http://arxiv.org/abs/2407.09258
Autor:
Camargo, Javier, Ferreira, Mayra
Given a continuum $X$, let $\mathcal{NB} (\mathcal{F}_1(X))$ be the hyperspace of nonblockers of $\mathcal{F}_1(X)$. In this paper, we show that if $X$ is hereditarily decomposable with the property of Kelley such that $\mathcal{NB} (\mathcal{F}_1(X)
Externí odkaz:
http://arxiv.org/abs/2204.09645
Autor:
CAMARGO, JAVIER1 jcamargo@saber.uis.edu.co, ORDOÑEZ, NORBERTO2 nordonezr@uaemex.mx, RAMÍREZ, DIEGO1 diego2190709@correo.uis.edu.co
Publikováno v:
Applied General Topology. 2024, Vol. 25 Issue 2, p385-406. 22p.
Publikováno v:
In Topology and its Applications 15 March 2024 345
Autor:
Camargo, Javier, Ferreira, Mayra
Publikováno v:
In Topology and its Applications 1 February 2024 342
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Given a dendrite $X$ and a continuous map $f\colon X\to X$, we show the following are equivalent: (i) $\omega_f$ is continuous and $\overline{\mathrm{Per}(f)}=\bigcap_{n\in\mathbb{N}}f^n(X)$; (ii) $\omega(x,f)=\Omega(x,f)$ for each $x\in X$; and (iii
Externí odkaz:
http://arxiv.org/abs/1811.04841
A continuum is a compact connected metric space. A non-empty closed subset $B$ of a continuum $X$ does not block $x\in X\setminus B$ provided that the union of all subcontinua of $X$ containing $x$ and contained in $X\setminus B$ is dense in $X$. We
Externí odkaz:
http://arxiv.org/abs/1808.09584
The hyperspace of all nontrivial convergent sequences in a Hausdorff space $X$ is denoted by $\mathcal{S}_c(X)$. This hyperspace is endowed with the Vietoris topology. In connection with a question and a problem by Garc\'ia-Ferreira, Ortiz-Castillo a
Externí odkaz:
http://arxiv.org/abs/1802.00725
Autor:
Camargo, Javier, Uzcategui, Carlos
We show that the following properties are preserved under inverse limits: countable fan-tightness, q+, discrete generation and selective separability. We also present several examples based on inverse limits of countable spaces.
Externí odkaz:
http://arxiv.org/abs/1709.05221