Theorem Set.nontrivial_iff_ne_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.nontrivial_iff_ne_singletonView on Github →
2023-01-11 08:02
Mathlib/Data/Set/Basic.lean
feat: A set is either a subsingleton or nontrivial (#1047) …
Added Set.nontrivial_iff_ne_singletonView on Github →