fact: Definition presheaf_morphism_to_function {T : algebraic_theory} {P P' : presheaf T} (f : presheaf_morphism P P') (n : nat) : P n → P' n := pr1 f n.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.CategoryTheory.Core.Functors UniMath.CategoryTheory.Core.NaturalTransformations UniMath.Combinatorics.StandardFiniteSets UniMath.AlgebraicTheories.AlgebraicTheories UniMath.AlgebraicTheories.Presheaves UniMath.AlgebraicTheories.PresheafCategoryCore UniMath.AlgebraicTheories.IndexedSetCategory