Filomat, ( ISI ), Volume (28), No (1), Year (2014-1) , Pages (27-35)
Title : ( On locally 1-connectedness of quotient spaces and its applications to fundamental groups )
Authors: Ali Pakdaman , Hamid Torabi Ardakani , Behrooz Mashayekhy Fard ,File:
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Abstract
Let $X$ be a locally 1-connected metric space and $A_1,A_2,...,A_n$ be connected, locally path connected and compact pairwise disjoint subspaces of $X$. In this paper, we show that the quotient space $X/(A_1,A_2,...,A_n)$ obtained from $X$ by collapsing each of the sets $A_i$'s to a point, is also locally 1-connected. Moreover, we prove that the induced continuous homomorphism of quasitopological fundamental groups is surjective. Finally, we give some applications to find out some properties of the fundamental group of the quotient space $X/(A_1,A_2,...,A_n)$.