proposition: Lemma ACplus_assoc : forall u v w : AC, (u + v) + w = u + (v + w).
proof: Proof. intros u v w. split; apply ARplus_assoc. Qed.
imports: CoRN.algebra.RSetoid CoRN.metric2.Metric CoRN.metric2.UniformContinuity Coq.QArith.Qabs CoRN.model.metric2.Qmetric CoRN.metric2.ProductMetric CoRN.model.totalorder.QposMinMax CoRN.model.totalorder.QMinMax CoRN.reals.faster.ARabs CoRN.reals.faster.ARroot CoRN.reals.faster.ARArith