هشتمین سمینار هندسه و توپولوژی , 2015-12-15
Title : ( On Open Subgroups of Topologized Fundamental Group )
Authors: seyed zeynal pashaei , Mehdi Abdullahi Rashid , Behrooz Mashayekhy Fard , Hamid Torabi Ardakani ,File:
Full Text

Abstract
In this talk we are interested to focus on open subgroups of topologized fundamental groups and give some equivalent conditions on a topological space to make sure a subgroup of its topologized fundamental group is open, when the fundamental group equipped with the compact-open topology or the Whisker topology. Moreover, we present some conditions under which generalized coverings, semicoverings and coverings are equal.