proposition: Lemma Zlt_hprop (a b: Z) (p q: (a < b)%Z): p = q.
proof: Proof. unfold Z.lt in *. destruct p. intros. apply (Eqdep_dec.K_dec_set comparison_eq_dec). reflexivity. Qed.
imports: Coq.Logic.Eqdep_dec Coq.QArith.QArith Coq.QArith.Qabs Coq.QArith.Qpower Coq.QArith.Qround CoRN.model.totalorder.QMinMax CoRN.order.TotalOrder