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Theorem set.ssubset_iff_subset_ne

Modification history

2022-02-02 14:51
src/data/set/basic.lean
feat(order/rel_classes): Unbundled typeclass to state that two relations are the non strict and strict versions (#11381) …
Deleted set.ssubset_iff_subset_neView on Github →
2020-01-09 22:58
src/data/set/basic.lean
refactor(data/set/basic): change def of `⊂` to match `<` (#1862)
Added set.ssubset_iff_subset_neView on Github →