proposition: Lemma Integral_opp:forall s, (-(IntegralQ s)==(IntegralQ (- s)))%Q.
proof: Proof. induction s. reflexivity. unfold StepQopp in *. rewriteStepF. rewrite <- IHs1. rewrite <- IHs2. ring. Qed.
imports: CoRN.algebra.RSetoid CoRN.metric2.Metric CoRN.metric2.UniformContinuity CoRN.model.totalorder.QposMinMax CoRN.model.structures.StepQsec CoRN.metric2.UniformContinuity CoRN.metric2.Prelength CoRN.model.structures.OpenUnit Coq.QArith.QArith CoRN.model.totalorder.QMinMax Coq.QArith.Qabs CoRN.model.ordfields.Qordfield CoRN.model.metric2.Qmetric CoRN.algebra.COrdFields2 CoRN.tactics.CornTac