T2, R1, and Semi-R1 Spaces

  • 발행 : 1979.12.20

초록

In this paper $T_0$-identification spaces are used to prove that the semi-$R_1$ separation axiom is not a generalization of the $R_1$ separation axiom and to determine conditions, which together with $R_1$, do and do not imply semi-$R_1$.

키워드