A covering map is a map p: E -> B with the property that each point b, an element of B, has a neighborhood U such that p^-1(U) is a disjoint union of open sets V_alpha such that, for each alpha, the restriction of p to V_alpha is a homeomorphism of V_alpha onto U.© BrainMass Inc. brainmass.com October 10, 2019, 2:06 am ad1c9bdddf
In the discrete topology all subsets are open. In particular, all sets that contain a single point are open.
Let x be in X, and B is an ...
This solution contextualizes discrete topology.