proposition: Lemma ordertypingSubst_monotone n m sigma Delta Gamma: n <= m -> Delta ⊩(n) sigma : Gamma -> Delta ⊩(m) sigma : Gamma.
proof: Proof. intros H H' i A H1; eapply ordertyping_monotone; eauto. Qed.
imports: List Arith Lia Undecidability.HOU(std.std) Undecidability.HOU.calculus(prelim terms syntax semantics typing)