Theorem TopologicalSpace.Clopens.countable_iff_secondCountable

Modification history

2024-11-14 00:15
Mathlib/Topology/ClopenBox.lean
chore: rename `second_countable` -> `secondCountable` in lemma and instance names (#18911) …
Added TopologicalSpace.Clopens.countable_iff_secondCountableView on Github →