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Theorem function.surjective.image_preimage

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 function.surjective.image_preimageView on Github →
2020-12-21 23:51
src/data/set/basic.lean
chore(data/{equiv,set}/basic): image_preimage (#5465) …
Added function.surjective.image_preimageView on Github →