About: Double origin topology

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In mathematics, more specifically general topology, the double origin topology is an example of a topology given to the plane R2 with an extra point, say 0*, added. In this case, the double origin topology gives a topology on the set X = R2 ∐ {0*}, where ∐ denotes the disjoint union.

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  • In mathematics, more specifically general topology, the double origin topology is an example of a topology given to the plane R2 with an extra point, say 0*, added. In this case, the double origin topology gives a topology on the set X = R2 ∐ {0*}, where ∐ denotes the disjoint union. (en)
  • Топологія подвоєного початку координат є прикладом топології, заданої на з додаванням додаткової точки 0*. (uk)
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  • In mathematics, more specifically general topology, the double origin topology is an example of a topology given to the plane R2 with an extra point, say 0*, added. In this case, the double origin topology gives a topology on the set X = R2 ∐ {0*}, where ∐ denotes the disjoint union. (en)
  • Топологія подвоєного початку координат є прикладом топології, заданої на з додаванням додаткової точки 0*. (uk)
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  • Double origin topology (en)
  • Топологія подвоєного початку координат (uk)
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