fact: Definition binprod_delta (x : C) : C⟦x,x ⊗ x⟧ := BinProductArrow _ _ (identity x) (identity x).
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