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Theorem set.eq_preimage_iff_image_eq

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.eq_preimage_iff_image_eqView on Github →
2021-02-25 09:50
src/data/set/basic.lean
feat(data/equiv/basic): lemmas about images and preimages (#6398)
Added set.eq_preimage_iff_image_eqView on Github →