Theorem Set.Subsingleton.eq_empty_or_singleton

Modification history

2024-04-18 05:39
Mathlib/Data/Set/Basic.lean
chore: split `Subsingleton,Nontrivial` off of `Data.Set.Basic` (#11832) …
Modified Set.Subsingleton.eq_empty_or_singletonView on Github →
2022-12-12 01:34
Mathlib/Data/Set/Basic.lean
feat: port Data.Set.Basic (#892) …
Added Set.Subsingleton.eq_empty_or_singletonView on Github →