Theorem Alexandroff.isOpen_iff_of_not_mem

Modification history

2023-05-30 23:20
Mathlib/Topology/Alexandroff.lean
chore: Rename Alenxandroff to Compactification.OnePoint (#4506) …
Deleted Alexandroff.isOpen_iff_of_not_memView on Github →
2023-02-13 08:36
Mathlib/Topology/Alexandroff.lean
feat: port Topology.Alexandroff (#2229)
Added Alexandroff.isOpen_iff_of_not_memView on Github →