fact: Definition indexed_cat_comp_z_iso {C : category} (Φ : indexed_cat C) {x y z : C} (f : x --> y) (g : y --> z) (xx : Φ x) : z_iso ((Φ $ g) ((Φ $ f) xx)) ((Φ $ (f · g)) xx).
imports: UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Univalence UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations