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finite topological space
In mathematics, a finite topological space is a topological space for which the underlying point set is finite. That is, it is a topological space for which there are only finitely many points.
While topology has mainly been developed for infinite spaces, finite topological spaces are often used to provide examples of interesting phenomena or counterexamples to plausible sounding conjectures. William Thurston has called the study of finite topologies in this sense "an oddball topic that can
lend good insight to a variety of questions."
==Topologies on a finite set==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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