fact: Definition runitor {C : category} (tu : tensor_unit C) : UU := ∑ ru : runitor_data tu, runitor_nat ru.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Isos