The category of additive commutative groups is preadditive. #
@[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
@[instance_reducible]
@[simp]
@[simp]
@[simp]
@[instance_reducible]
@[simp]
@[instance_reducible]
@[instance_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) :