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.
Require Import UniMath.MoreFoundations.All. Require Import UniMath.CategoryTheory.Core.Categories. Require Import UniMath.CategoryTheory.Categories.Rel. Require Import UniMath.CategoryTheory.Adjunctions.Core. Require Import UniMath.CategoryTheory.Monoidal.WhiskeredBifunctors. Require Import UniMath.CategoryTheory.Monoidal.Categories. Require Import UniMath.CategoryTheory.Monoidal.Structure.Symmetric. Require Import UniMath.CategoryTheory.Monoidal.Structure.Closed.