Mathlib Changelog
v3
Changelog
About
Github
Mathlib v3 is deprecated.
Go to Mathlib v4
Theorem
set.preimage_eq_iff_eq_image
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.preimage_eq_iff_eq_image
View on Github →
2021-02-25 09:50
src/data/set/basic.lean
feat(data/equiv/basic): lemmas about images and preimages (#6398)
Added
set.preimage_eq_iff_eq_image
View on Github →