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Theorem set.ssubset_of_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.ssubset_of_ssubset_of_subsetView on Github →
2021-04-30 00:14
src/data/set/basic.lean
feat(finset/basic): fill in holes in the finset API (#7386) …
Added set.ssubset_of_ssubset_of_subsetView on Github →