The category of additive commutative groups is preadditive. #
@[implicit_reducible]
@[simp]
theorem
AddCommGrpCat.hom_add_apply
{P Q : AddCommGrpCat}
(f g : P ⟶ Q)
(x : ↑P)
:
(CategoryTheory.ConcreteCategory.hom (f + g)) x = (CategoryTheory.ConcreteCategory.hom f) x + (CategoryTheory.ConcreteCategory.hom g) x
@[implicit_reducible]
@[implicit_reducible]
@[simp]
@[implicit_reducible]
@[simp]
@[implicit_reducible]
@[simp]
@[implicit_reducible]
@[simp]
@[implicit_reducible]
@[implicit_reducible]
AddCommGrpCat.Hom.hom bundled as an additive equivalence.
Instances For
@[simp]
@[simp]
theorem
AddCommGrpCat.homAddEquiv_symm_apply_hom
{M N : AddCommGrpCat}
(a✝ : CategoryTheory.ToHom M N)
:
Hom.hom (homAddEquiv.symm a✝) = a✝