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Theorem set.range_some_union_none

Modification history

2022-12-07 20:30
src/data/set/basic.lean
refactor(data/set/basic): move image, preimage, and range to a new file (#17842) …
Modified set.range_some_union_noneView on Github →
2021-08-14 11:55
src/data/set/basic.lean
chore(data/option,data/set): a few lemmas, golf (#8636) …
Added set.range_some_union_noneView on Github →