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math.GN2018
Some topological properties of spaces between the Sorgenfrey and usual topologies on real number
Fucai Lin, Jiada Li
The -space, denoted as , has as its point set and a basis consisting of usual open interval neighborhood at points of while taking Sorgenfr…
math.GR2018
An affirmative answer to Yamada's Conjecture
Chuan Liu, Fucai Lin
In this paper, we give an affirmative answer to Yamada's Conjecture on free topological groups, which was posed in [K. Yamada, {\it Fréchet-Urysohn spaces in free topological group…