fact: Definition REL_braiding (X Y : hSet) : bin_hrel (X × Y)%set (Y × X)%set := (λ xy yx, pr1 xy = pr2 yx ∧ pr2 xy = pr1 yx)%logic.
imports: UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Categories.Rel UniMath.CategoryTheory.Adjunctions.Core UniMath.CategoryTheory.Monoidal.WhiskeredBifunctors UniMath.CategoryTheory.Monoidal.Categories UniMath.CategoryTheory.Monoidal.Structure.Symmetric UniMath.CategoryTheory.Monoidal.Structure.Closed