Mathlib Changelog
v4
Changelog
About
Github
Theorem
SetRel.image_eq_cod_of_dom_subset
Modification history
2025-08-13 00:55
Mathlib/Data/Rel.lean
refactor: rename `Rel` to `SetRel`, restore the old `Rel` (#27447) …
Added
SetRel.image_eq_cod_of_dom_subset
View on Github →