fact: Definition iterop_fun_step' (lunax : islunit op unel) {m} (xs:stn m -> X) (x:X) : iterop_fun (append_vec xs x) = op (iterop_fun xs) x.
imports: UniMath.Combinatorics.Lists UniMath.Combinatorics.FiniteSequences UniMath.Algebra.RigsAndRings UniMath.Foundations.UnivalenceAxiom UniMath.MoreFoundations.Tactics UniMath.Algebra.Groups UniMath.MoreFoundations.NegativePropositions