fact: Definition symmetric_whiskers_swap_nat_trans_data {C : category} {M : monoidal C} (B : symmetric M) (x : C) : nat_trans_data (leftwhiskering_functor M x) (rightwhiskering_functor M x) := λ y, (monoidal_braiding_data B) x y.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Isos UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.CategoryTheory.Monoidal.WhiskeredBifunctors UniMath.CategoryTheory.Monoidal.Categories