19 citations · 64 across the 18 of their papers we have counts for
4 papers · 1 filter
On the Existence of Categorical Universal Coverings
Ali Pakdaman, Hamid Torabi, Behrooz Mashayekhy
In this paper, we study necessary and sufficient conditions for the existence of categorical universal coverings using open covers of a given space . As some applications, first…
Spanier spaces and covering theory of non-homotopically path Hausdorff spaces
Ali Pakdaman, Hamid Torabi, Behrooz Mashayekhy
H. Fischer et al. (Topology and its Application, 158 (2011) 397-408.) introduced the Spanier group of a based space which is denoted by $\psp$. By a Spanier space we mean a…
On topological fundamental groups of quotient spaces
Hamid Torabi, Ali Pakdaman, Behrooz Mashayekhy
Let be a quotient map, where is a subspace of . We explore conditions under which is dense in , where the f…
Topological fundamental groups and small generated coverings
Hamid Torabi, Ali Pakdaman, Behrooz Mashayekhy
This paper is devoted to study some topological properties of the SG subgroup, , of the quasitopological fundamental group of a based space , $\pt$, its topol…