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Theorem finset.image_subset_iff_subset_preimage

Modification history

2020-09-24 06:54
src/data/finset/preimage.lean
chore(*): cleanup imports, split off data/finset/preimage from data/set/finite (#4221) …
Modified finset.image_subset_iff_subset_preimageView on Github →
2020-07-12 03:42
src/data/set/finite.lean
feat(data/set/finite): add a version of `prod_preimage` for `inj_on` (#3342) …
Added finset.image_subset_iff_subset_preimageView on Github →