proposition: Lemma assoc_fun_to_seq : isAssociative_fun -> isAssociative_seq.
proof: Proof. intros assoc x. exact (assoc _ _ (λ i j, x i j)). Defined.
imports: UniMath.Combinatorics.Lists UniMath.Combinatorics.FiniteSequences UniMath.Algebra.RigsAndRings UniMath.Foundations.UnivalenceAxiom UniMath.MoreFoundations.Tactics UniMath.Algebra.Groups UniMath.MoreFoundations.NegativePropositions