fact: Definition is_nat_z_iso_functor_comp_op {C₁ C₂ C₃ : category} (F : C₁ ⟶ C₂) (G : C₂ ⟶ C₃) : is_nat_z_iso (functor_comp_op F G).
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.FunctorCategory