CLOSED MAPS ON METRIC SPACES

被引：7
|
作者：
Tanaka, Yoshio [1 ]
机构：
[1] Tokyo Gakugei Univ, Tokyo, Japan
来源：
TOPOLOGY AND ITS APPLICATIONS | 1980年 / 11卷 / 01期
关键词：
closed map; Lindelof space; Frechet space; k-network; weak topology;
D O I：
10.1016/0166-8641(80)90019-X
中图分类号：
O29 [应用数学];
学科分类号：
070104 ;
摘要：
The following result is proved: Let Y be the image of a metric space X under a closed map f. Then every partial derivative f(-1)(y) is Lindelof if and only if Y has a point-countable k-network.
引用
收藏
页码：87 / 92
页数：6
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