作者plover (喜欢你 (￣▽￣＃)﹏﹏)
看板Math
标题[分析] 高微(35)
时间Wed Oct 12 02:23:26 2005
Suppose that X is contained in Y, and Y is contained in Z,
where X, Y, and Z all are metric spaces. Show that X is compact
relative to Y iff X is compact relative to Z.
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