proposition: Lemma InFinEnumC_weaken : forall x l, In x l -> InFinEnumC x l.
proof: Proof. intros. intro abs. contradict abs. exists x. split. exact H. apply ball_refl. apply Qle_refl. Qed.
imports: CoRN.model.totalorder.QposMinMax CoRN.metric2.Hausdorff CoRN.logic.Classic CoRN.stdlib_omissions.List CoRN.metric2.Classification CoRN.metric2.Complete CoRN.metric2.Prelength