KnowraHausdorff spaceLinked fromLinked fromThe 17 pages that link to Hausdorff space, each with the reason it gives.All 17Broader topic 3Related 9Compared with 5Normal spaceCompared with: Hausdorff separation concerns points, while normality separates arbitrary disjoint closed sets.Sierpiński spaceCompared with: Its two points cannot be separated by disjoint open neighborhoods.Urysohn's lemmaCompared with: Hausdorff separation concerns points, while the lemma requires normality for closed sets.Tietze extension theoremCompared with: Hausdorff separation alone is weaker than the normality required by the theorem.Tube lemmaCompared with: The tube lemma does not require the Hausdorff separation condition.