proposition: Lemma DN_decision (P: Prop): DN (decision P).
proof: Proof. firstorder. Qed.
imports: CoRN.algebra.RSetoid CoRN.metric2.Metric CoRN.metric2.UniformContinuity CoRN.model.totalorder.QposMinMax Coq.Classes.Morphisms CoRN.reals.fast.CRGroupOps CoRN.logic.Classic