Browsing Matemáticas by Subject "contractible"

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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 ...
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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