Covering maps for locally path-connected spaces
Abstract
We define Peano covering maps and prove basic properties analogous to classical covers. Their domain is always locally path-connected but the range may be an arbitrary topological space. One of characterizations of Peano covering maps is via the uniqueness of homotopy lifting property for all locally path-connected spaces. Regular Peano covering maps over path-connected spaces are shown to be identical with generalized regular covering maps introduced by Fischer and Zastrow. If is path-connected, then every Peano covering map is equivalent to the projection , where is a subgroup of the fundamental group of and equipped with the basic topology. The projection is a Peano covering map if and only if it has the unique path lifting property. We define a new topology on for which one has a characterization of having the unique path lifting property if is a normal subgroup of . Namely, must be closed in . Such groups include ( being an open cover of ) and the kernel of the natural homomorphism from the fundamental group to the Cech fundamental group.
Cite
@article{arxiv.0801.4967,
title = {Covering maps for locally path-connected spaces},
author = {N. Brodskiy and J. Dydak and B. Labuz and A. Mitra},
journal= {arXiv preprint arXiv:0801.4967},
year = {2008}
}
Comments
25 pages, several references added plus Proposition 4.12 and Example 4.13