proposition: Lemma forallI (T : System) (f : Formula) (v : nat): ~ In_freeVarSys LNN v T -> SysPrf T f -> SysPrf T (allH v, f)%fol.
proof: Proof. apply (forallI LNN). Qed.
imports: Coq(Arith Ensembles List) LibHyps(LibHyps) hydras(MoreLibHyps NewNotations)