Mathlib Changelog
v4
Changelog
About
Github
Theorem
Group.covariant_swap_iff_contravariant_swap
Modification history
2022-10-17 21:30
Mathlib/Algebra/CovariantAndContravariant.lean
feat: port Algebra/CovariantAndContravariant (#467) …
Added
Group.covariant_swap_iff_contravariant_swap
View on Github →