fact: Definition binprod_assoc (x y z : C) : C⟦(x ⊗ y) ⊗ z,x ⊗ (y ⊗ z)⟧ := BinProductArrow _ _ (π1 · π1) (BinProductArrow _ _ (π1 · π2) π2).
imports: UniMath.Foundations.PartD UniMath.Foundations.Propositions UniMath.Foundations.Sets UniMath.MoreFoundations.Tactics UniMath.Algebra.Monoids UniMath.OrderTheory.Lattice.Lattice UniMath.OrderTheory.Lattice.Bounded UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Monics UniMath.CategoryTheory.Limits.BinProducts UniMath.CategoryTheory.Limits.Terminal