Theorem exterior_singleton_eq_ker_nhds

Modification history

2024-09-24 06:31
Mathlib/Topology/AlexandrovDiscrete.lean
chore(AlexandrovDiscrete): move `exterior` to new files (#16957) …
Modified exterior_singleton_eq_ker_nhdsView on Github →
2023-09-14 10:14
Mathlib/Topology/AlexandrovDiscrete.lean
feat: Exterior of a set (#6982) …
Added exterior_singleton_eq_ker_nhdsView on Github →