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(*       ___                                                              *)
(*      ||M||                                                             *)
(*      ||A||       A project by Andrea Asperti                           *)
(*      ||T||                                                             *)
(*      ||I||       Developers:                                           *)
(*      ||T||         The HELM team.                                      *)
(*      ||A||         http://helm.cs.unibo.it                             *)
(*      \   /                                                             *)
(*       \ /        This file is distributed under the terms of the       *)
(*        v         GNU General Public License Version 2                  *)
(*                                                                        *)
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include "basic_2/computation/fsb_aaa.ma".
include "basic_2/dynamic/snv_aaa.ma".

(* STRATIFIED NATIVE VALIDITY FOR TERMS *************************************)

(* forward lemmas on "qrst" strongly normalizing closures *********************)

lemma snv_fwd_fsb: ∀h,o,G,L,T. ⦃G, L⦄ ⊢ T ¡[h, o] → ⦥[h, o] ⦃G, L, T⦄.
#h #o #G #L #T #H elim (snv_fwd_aaa … H) -H /2 width=2 by aaa_fsb/
qed-.