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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Point-finite collection ： ウィキペディア英語版 Point-finite collection In mathematics, a collection $\backslash mathcal$ of subsets of a topological space $X$ is said to be point finite or a point finite collection if every point of $X$ lies in only finitely many members of $\backslash mathcal$.〔.〕 A topological space in which every open cover admits a point-finite open refinement is called metacompact. Every locally finite collection of subsets of a topological space is also point finite. A topological space in which every open cover admits a locally finite open refinement is called paracompact. Every paracompact space is metacompact.〔 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Point-finite collection」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.