Hausdorff space
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Revision 7472
10/19/2026, 9:00:53 PM · Ancient Tree
Added exercise "Les espaces métriques sont séparés"
linked exercisesSous-espace topologique d’un espace séparéSous-espace topologique d’un espace séparé, Les espaces métriques sont séparés
Revision 7469
10/19/2026, 8:55:35 PM · Ancient Tree
Added exercise "Sous-espace topologique d'un espace séparé"
linked exercisesNoneSous-espace topologique d’un espace séparé
Revision 643
7/27/2026, 9:34:25 AM · Ancient Tree
Concept edited
Compare with revision 6422 changed lines
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A Hausdorff space is a [[Topological space|topological space]] $X$ such that, for every distinct $x,y\in X$, there exists an [[Open neighborhood|open neighborhood]] $U$ of $x$ and an open neighborhood $V$ of $y$ such that $U$ and $V$ are [[disjoint|disjoint]].1
A Hausdorff space is a [[Topological space|topological space]] $X$ such that, for every distinct $x,y\in X$, there exists an [[Open neighborhood|open neighborhood]] $U$ of $x$ and an open neighborhood $V$ of $y$ such that $U$ and $V$ are [[Disjoint sets|disjoint]].Revision 642
7/27/2026, 9:34:08 AM · Ancient Tree
Concept created
A Hausdorff space is a [[Topological space|topological space]] $X$ such that, for every distinct $x,y\in X$, there exists an [[Open neighborhood|open neighborhood]] $U$ of $x$ and an open neighborhood $V$ of $y$ such that $U$ and $V$ are [[disjoint|disjoint]].