| 释义 |
Urysohn lemma
基本例句
乌里申引理
Urysohn lemmaon L-closure spaces is valid.证明了关于L-闭包空间的Urysohn引理。
Methods L-closure spaces,some special maps between them and normal L-closure spaces are defined. Also,characterizations of these maps are given. Furthermore,Urysohn lemmaon L-closure spaces is proved.方法定义L-闭包空间及它们之间的连续映射、开映射、闭映射和同胚映射,并给出这些映射的等价刻画,继而定义正规L-闭包空间。 |