fact: Definition unitors_associator_to_runitor {C : category} {tu : tensor_unit C} (ua : unitors_associator tu) : runitor tu := pr12 ua.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Isos