Commit 2020-11-11 10:50 3d6291ea
View on Github →chore(algebra/group/with_one): Use bundled morphisms (#4957)
The comment "We have no bundled semigroup homomorphisms" has become false, these exist as mul_hom
.
This also adds with_one.coe_mul_hom
and with_zero.coe_add_hom