proposition: Lemma rclo2_mon_gen clo clo' r r' x0 x1 (IN: @rclo2 clo r x0 x1) (LEclo: clo <3= clo') (LEr: r <2= r') : @rclo2 clo' r' x0 x1.
proof: Proof. induction IN; intros. - econstructor 1. apply LEr, IN. - econstructor 2; [intros; eapply H, PR|apply LEclo, IN]. Qed.
imports: Program.Basics Paco(paco2 pacotac)