fact: Definition isAssociativeMultipleOperation := ∏ x, op (flattenUnorderedSequence x) = composeMultipleOperation x.
imports: UniMath.Combinatorics.Lists UniMath.Combinatorics.FiniteSequences UniMath.Algebra.RigsAndRings UniMath.Foundations.UnivalenceAxiom UniMath.MoreFoundations.Tactics UniMath.Algebra.Groups UniMath.MoreFoundations.NegativePropositions UniMath.Combinatorics.FiniteSets UniMath.Foundations.NaturalNumbers