Theorem isOpen_setOf_disjoint_nhds_nhds

Modification history

2024-01-29 18:36
Mathlib/Topology/Constructions.lean
feat(Topology/Separation): define R₁ spaces, review API (#10085) …
Modified isOpen_setOf_disjoint_nhds_nhdsView on Github →
2023-10-30 17:26
Mathlib/Topology/Separation.lean
chore(Topology/Separation): rename type variables (#7589) …
Modified isOpen_setOf_disjoint_nhds_nhdsView on Github →
2023-02-02 07:22
Mathlib/Topology/Separation.lean
feat: port Topology.Separation (#1940)
Added isOpen_setOf_disjoint_nhds_nhdsView on Github →