The $k_R$-property on free topological groups

Abstract

A space $X$ is called a $k_R$-space, if $X$ is Tychonoff and the necessary and sufficient condition for a real-valued function $f$ on $X$ to be continuous is that the restriction of $f$ on each compact subset is continuous. In this paper, we mainly discuss the $k_R$-property on the free topological groups, and generalize some well-known results of K. Yamada's in the free topological groups.

9 pages. arXiv admin note: substantial text overlap with arXiv:1610.02522

References in corpus (1)

• Fans and their applications in General Topology, Functional Analysis and Topological Algebra