proposition: Lemma Z_eqb_neg_neg x y : Z.eqb (Z.neg x) (Z.neg y) = Pos_eqb_unfolded x y.
proof: Proof. reflexivity. Qed.
imports: Coq.ZArith.ZArith Coq.Lists.List Coq.Setoids.Setoid Coq.Classes.Morphisms Coq.QArith.QArith_base Coq.QArith.Qreduction Coq.QArith.Qround