proposition: Lemma RNeg_sunop : fun_strext (S1:=RCSetoid) (S2:=RCSetoid) Ropp.
proof: Proof. unfold fun_strext. intros x y H H0. apply H. rewrite H0. reflexivity. Qed.
imports: CoRN.algebra.CSetoids CoRN.algebra.CSemiGroups CoRN.algebra.CMonoids CoRN.algebra.CGroups CoRN.tactics.CornTac CoRN.algebra.CAbGroups CoRN.algebra.CRings CoRN.algebra.CFields CoRN.algebra.COrdFields CoRN.reals.CReals Coq.Reals.RIneq Coq.Reals.Rcomplete Coq.Reals.Rlimit Coq.Reals.Rbasic_fun Coq(Lra)