Title : ( On quasi-small loop groups )
Authors: Behrooz Mashayekhy Fard , Bibi Hanieh Mirebrahimi Paziquee , Hamid Torabi Ardakani ,Access to full-text not allowed by authors
Abstract
In this paper, we study some properties of homotopical closeness for paths. We define the quasi-small loop group as the subgroup of all classes of loops that are homotopically close to null-homotopic loops, denoted by $\\\\\\\\\\\\\\\\pi_1^{qs} (X, x)$ for a pointed space $(X, x)$. Then we prove that, unlike the small loop group, the quasi-small loop group $\\\\\\\\\\\\\\\\pi_1^{qs}(X, x)$ does not depend on the base point, and that it is a normal subgroup containing $\\\\\\\\\\\\\\\\pi_1^{sg}(X, x)$, the small generated subgroup of the fundamental group. Also, we show that a space $X$ is homotopically path Hausdorff if and only if $\\\\\\\\\\\\\\\\pi_1^{qs} (X, x)$ is trivial. Finally, as consequences, we give some relationships between the quasi-small loop group and the quasi-topological fundamental group.
Keywords
, Small loop group, Spanier group, closeness for paths, homotopically path Hausdorff space@article{paperid:1090954,
author = {Mashayekhy Fard, Behrooz and Mirebrahimi Paziquee, Bibi Hanieh and Torabi Ardakani, Hamid},
title = {On quasi-small loop groups},
journal = {Mathematica Slovaka},
year = {2022},
volume = {72},
number = {4},
month = {August},
issn = {0139-9918},
pages = {1017--1030},
numpages = {13},
keywords = {Small loop group; Spanier group; closeness for paths; homotopically path Hausdorff space},
}
%0 Journal Article
%T On quasi-small loop groups
%A Mashayekhy Fard, Behrooz
%A Mirebrahimi Paziquee, Bibi Hanieh
%A Torabi Ardakani, Hamid
%J Mathematica Slovaka
%@ 0139-9918
%D 2022