Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5777940 | Topology and its Applications | 2017 | 7 Pages |
Abstract
It is shown that a connected space X is weakly orderable provided it has a finite-valued Vietoris continuous multiselection for its hyperspace F(X) of nonempty closed subsets. In fact, for connected spaces, every such multiselection is at most two-point valued, and X is compact whenever the multiselection is not singleton-valued at some element of F(X). Complementary to this result is a characterisation of weak orderability of connected spaces in terms of “proper” Vietoris continuous multiselections for hyperspaces of finite sets.
Related Topics
Physical Sciences and Engineering
Mathematics
Geometry and Topology
Authors
Valentin Gutev,