fact: Definition action_unitor_nat {C : category} {A : action_data C} (au : action_unitor_data A) : UU := ∏ (x y : C), ∏ (f : C ⟦x,y⟧), I_{Mon_V} ⊗^{A}_{l} f · au y = au x · f.
imports: UniMath.MoreFoundations.All UniMath.Foundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Equivalences.Core UniMath.CategoryTheory.Equivalences.FullyFaithful UniMath.CategoryTheory.Monoidal.WhiskeredBifunctors UniMath.CategoryTheory.Monoidal.Categories