Ciencias,UNAM

Browsing Matemáticas by Author "Pellicer-Covarrubias, P"

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Browsing Matemáticas by Author "Pellicer-Covarrubias, P"

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  • (1)(2)-Homogeneous continua with cut points
    Nadler, SB; Pellicer-Covarrubias, P; Puga, I (2007)
    A space is said to be _21-homogeneous provided that there are exactly two orbits for the action of the group of homeomorphisms of the space onto itself. It is shown that if X is a 1/2-homogeneous continuum with at least ...
  • Cones that are 1/2-homogeneous
    Nadler, SB; Pellicer-Covarrubias, P (2007)
    A space is 1/2-homogeneous provided that there are exactly two orbits for the action of 2 the group of homeomorphisms of the space onto itself. Let X be a nonempty compact metric space such that the cone over X is ...
  • The hyperspaces C(p,X) for atriodic continua
    Pellicer-Covarrubias, P (2005)
    Let C(X) denote the hyperspace of subcontinua of a continuum X. For A is an element of C(X), define the hyperspace C(A, X) = {B is an element of C(X) : A subset of B}. We prove that nondegenerate Whitney levels of C(p, X) ...
  • On 1/2-homogeneous continua
    Neumann-Lara, V; Pellicer-Covarrubias, P; Puga, I (2006)
    A continuum is 1/2-homogeneous provided there are exactly two orbits for the action of the group of homeomorphisms of the continuum onto itself. In this paper we study some relations between 1/2-homogeneous continua and ...
  • Retractions and contractibility in hyperspaces
    Charatonik, JJ; Pellicer-Covarrubias, P (2007)
    Given a metric continuum X, let 2(X) denote the hyperspace of all nonempty closed subsets of X. For each positive integer k let C-k(X) stand for the hyperspace of members of 2(X) having at most k components. Consider ...

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