proposition: Lemma Qopp_Qpos_neg (x: Qpos): -x < 0.
proof: Proof. apply Qopp_Qlt_0_r. auto. Qed.
imports: Coq.QArith.QArith Coq.QArith.Qpower CoRN.model.ordfields.Qordfield CoRN.algebra.COrdFields2 Coq.Logic.Eqdep_dec CoRN.tactics.CornTac Coq.QArith.Qround Coq.QArith.Qabs CoRN.stdlib_omissions.Q