no goals
J : Type w
C : Type u
inst✝² : Category C
inst✝¹ : HasZeroMorphisms C
f : J → C
inst✝ : HasBiproduct f
j : Discrete J
⊢ colimit.ι (Discrete.functor f) j ≫ (isoCoproduct f).inv = colimit.ι (Discrete.functor f) j ≫ Sigma.desc (ι f)
simp [biproduct.isoCoproduct]