基等价与拓扑等价的关系探讨

2005-04-29 23:29魏悦姿
大众科技 2005年4期
关键词:等价标识码分类号

魏悦姿

[摘要]文章从拓扑空间基的概念出发,讨论基与拓扑的关系,指出了现行教材中的一道习题的不妥之处,给出了判断两个基为等价基的充分必要条件。作为应用,讨论了度量空间及一些拓扑空间的拓扑等价问题。

[关键词]基;等价基;生成拓扑

[中图分类号]D0189.11

[文献标识码]A

[文章编号]1008-1151(2005)04—0150—02

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