Mathlib v3 is deprecated. Go to Mathlib v4

Theorem set.eq_or_ssubset_of_subset

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.eq_or_ssubset_of_subsetView on Github →
2020-01-09 22:58
src/data/set/basic.lean
refactor(data/set/basic): change def of `⊂` to match `<` (#1862)
Added set.eq_or_ssubset_of_subsetView on Github →