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Theorem equiv.eq_preimage_iff_image_eq

Modification history

2021-10-06 15:46
src/data/equiv/basic.lean
refactor(data/equiv): split out `./set` from `./basic` (#9560) …
Modified equiv.eq_preimage_iff_image_eqView on Github →
2021-02-25 09:50
src/data/equiv/basic.lean
feat(data/equiv/basic): lemmas about images and preimages (#6398)
Added equiv.eq_preimage_iff_image_eqView on Github →