Topological property

（重定向自Topological invariant）

In topology and related areas of mathematics a topological property or topological invariant is a property of a topological space which is invariant under homeomorphisms. That is, a property of spaces is a topological property if whenever a space X possesses that property every space homeomorphic to X possesses that property. Informally, a topological property is a property of the space that can be expressed using open sets.

单词	Topological invariant
释义	Topological invariant 原声例句 TED演讲（视频版） 2015年9月合集 And it's what's called a topological invariant. 也是一种拓扑不变量。英语百科 Topological property （重定向自Topological invariant） In topology and related areas of mathematics a topological property or topological invariant is a property of a topological space which is invariant under homeomorphisms. That is, a property of spaces is a topological property if whenever a space X possesses that property every space homeomorphic to X possesses that property. Informally, a topological property is a property of the space that can be expressed using open sets.
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