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