fact: Definition algebraic_theory_morphism_data (T T' : algebraic_theory_data) : UU := indexed_set_cat _ ⟦T, T'⟧.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.CategoryTheory.Core.Categories UniMath.Combinatorics.StandardFiniteSets UniMath.AlgebraicTheories.AlgebraicTheories UniMath.AlgebraicTheories.AlgebraicTheoryCategoryCore UniMath.AlgebraicTheories.IndexedSetCategory