Definition monoidal_data_REL : monoidal_data REL. Proof. simple refine (_ ,, _ ,, _ ,, _ ,, _ ,, _ ,, _ ,, _). - exact tensor_data_REL. - exact unitset. - exact leftunitor_REL. - exact leftunitorinv_REL. - exact rightunitor_REL. - exact rightunitorinv_REL. - exact associator_REL. - exact associatorinv_REL. Defined.
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.