fact: Definition associatorinv_REL : associatorinv_data tensor_data_REL := λ X Y Z xyz₁ xyz₂, ((pr11 xyz₂ = pr1 xyz₁) ∧ (pr21 xyz₂ = pr12 xyz₁) ∧ (pr2 xyz₂ = pr22 xyz₁))%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