Theorem UpperSetTopology.IsOpen_sInter

Modification history

2023-09-05 23:13
Mathlib/Topology/Order/UpperLowerSetTopology.lean
feat: Alexandrov-discrete spaces (#6962) …
Deleted UpperSetTopology.IsOpen_sInterView on Github →
2023-08-01 18:11
Mathlib/Topology/Order/UpperLowerSetTopology.lean
feat(Topology/Order/UpperLowerSetTopology): Introduce the Upper Set (or Alexandrov) topology and the Lower Set topology (#5672) …
Added UpperSetTopology.IsOpen_sInterView on Github →