About: Alexandroff extension

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Given a space X, the space X ⊔ {∞}, topologized so that a set containing ∞ is open iff its complement is closed compact in X

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dbo:description
  • given a space X, the space X ⊔ {∞}, topologized so that a set containing ∞ is open iff its complement is closed compact in X (en)
  • espai totpològic (ca)
  • 주어진 위상 공간에 한 점을 추가하여 만든 콤팩트 공간 (ko)
  • la operacio kiu, doninta topologian spacon X, faras kompaktan topologian spacon X ⊔ {∞}, kies topologio estas tia ke subaro enhavanta ∞ estas malfermita se kaj nur se ĝia komplemento estas fermita kompakta subaro de X (eo)
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  • V.V. (en)
dbp:id
  • A/a011260 (en)
dbp:last
  • Fedorchuk (en)
dbp:title
  • Aleksandrov compactification (en)
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  • Alexandroff extension (en)
  • Extensió d'Alexandroff (ca)
  • Alexandroff-Kompaktifizierung (de)
  • Compactifié d'Alexandrov (fr)
  • Compattificazione di Alexandrov (it)
  • アレクサンドロフ拡大 (ja)
  • 알렉산드로프 콤팩트화 (ko)
  • Одноточкова компактифікація (uk)
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