Small loop spaces and covering theory of non-homotopically Hausdorff spaces

Ali Pakdaman; Hamid Torabi; Behrooz Mashayekhy

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arXiv · 1011.1611

Small loop spaces and covering theory of non-homotopically Hausdorff spaces

Ali Pakdaman·Hamid Torabi·Behrooz Mashayekhy

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Abstract

In this paper we devote to spaces that are not homotopically hausdorff and study their covering spaces. We introduce the notion of small covering and prove that every small covering of $X$ is the universal covering in categorical sense. Also, we introduce the notion of semi-locally small loop space which is the necessary and sufficient condition for existence of universal cover for non-homotopically hausdorff spaces, equivalently existence of small covering spaces. Also, we prove that for semi-locally small loop spaces, $X$ is a small loop space if and only if every cover of $X$ is trivial if and only if $π_1^{top}(X)$ is an indiscrete topological group.

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BibTeX RIS

Ali Pakdaman, Hamid Torabi, Behrooz Mashayekhy. 2010-11-07. Small loop spaces and covering theory of non-homotopically Hausdorff spaces. https://arxiv.org/abs/1011.1611

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