Theorem HasSubset.Subset.diff_ssubset_of_nonempty

Modification history

2025-07-04 10:05
Mathlib/Data/Set/Disjoint.lean
chore(Data/Set/Disjoint): move `BooleanAlgebra` material to `Order` (#26724) …
Modified HasSubset.Subset.diff_ssubset_of_nonemptyView on Github →
2025-03-21 02:30
Mathlib/Data/Set/Disjoint.lean
feat(Set): lemmas about set difference (#22253) …
Added HasSubset.Subset.diff_ssubset_of_nonemptyView on Github →