Theorem Set.compl_subset_compl_of_subset

Modification history

2026-07-06 15:50
Mathlib/Order/BooleanAlgebra/Set.lean
feat: use `LE.le` for subset relation in `Set`, `Finset`, `PSet`, `ZFSet`, `Class` (#32983) …
Modified Set.compl_subset_compl_of_subsetView on Github →
2025-07-03 15:35
Mathlib/Data/Set/Basic.lean
chore: move `BooleanAlgebra` material on `Set` out of `Data` (#26665) …
Modified Set.compl_subset_compl_of_subsetView on Github →
2023-07-20 06:11
Mathlib/Data/Set/Basic.lean
chore: `gcongr` attributes for sup/inf, min/max, union/intersection/complement, image/preimage (#6016)
Added Set.compl_subset_compl_of_subsetView on Github →