1 (**************************************************************************)
4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
8 (* ||A|| http://helm.cs.unibo.it *)
10 (* \ / This file is distributed under the terms of the *)
11 (* v GNU General Public License Version 2 *)
13 (**************************************************************************)
15 include "static_2/static/lsubr.ma".
16 include "basic_2/dynamic/lsubv.ma".
18 (* LOCAL ENVIRONMENT REFINEMENT FOR NATIVE VALIDITY *************************)
20 (* Forward lemmas with restricted refinement for local environments *********)
22 (* Basic_2A1: uses: lsubsv_fwd_lsubr *)
23 lemma lsubv_fwd_lsubr (h) (a) (G): ∀L1,L2. G ⊢ L1 ⫃![h,a] L2 → L1 ⫃ L2.
24 #h #a #G #L1 #L2 #H elim H -L1 -L2 /2 width=1 by lsubr_bind, lsubr_beta/