proposition: Proposition sym_mon_braiding_inv (x y : V) : sym_mon_braiding x y · sym_mon_braiding y x = identity _.
proof: Proof. exact (pr1 (pr1 (pr222 V) x y)). Qed.
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