Let E be a family of subsets in a topological space. E is said to have a fip (the finite intersection property) if and only if every finite subfamily of E has a nonempty intersection.
編集:MenuBar
FrontPage Encyclopedia of Compactness Bitopology and Fuzzy Topology etc. Other Compactness Recreation テンプレ 編集ノート アップローダー 数式の入れ方 探し方
About Wiki SandBox ヘルプ 整形ルール サンプルサイト
Encyclopedia of Separation Axoims Encyclopedia of Connectedness