proposition: Lemma gupaco3_mon clo r r' x0 x1 x2 (IN: @gupaco3 clo r x0 x1 x2) (LEr: r <3= r'): @gupaco3 clo r' x0 x1 x2.
proof: Proof. eapply gpaco3_mon. apply IN. apply LEr. apply LEr. Qed.
imports: Program.Basics Paco(paco3 pacotac)