fact: Definition associator_nat_leftrightwhisker {C : category} {T : tensor_data C} (α : associator_data T) : UU := ∏ (x y y' z : C) (g : C⟦y,y'⟧), (α x y z) · (x ⊗^{ T}_{l} (g ⊗^{ T}_{r} z)) = ((x ⊗^{ T}_{l} g) ⊗^{ T}_{r} z) · (α x y' z).
imports: UniMath.Foundations.All UniMath.MoreFoundations.Notations UniMath.MoreFoundations.PartA UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.PrecategoryBinProduct UniMath.CategoryTheory.Monoidal.WhiskeredBifunctors UniMath.CategoryTheory.Adjunctions.Core UniMath.CategoryTheory.Equivalences.Core UniMath.CategoryTheory.Equivalences.FullyFaithful UniMath.CategoryTheory.opp_precat