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[helm.git] / matita / matita / contribs / lambdadelta / ground / relocation / gr_sle_isd.ma
diff --git a/matita/matita/contribs/lambdadelta/ground/relocation/gr_sle_isd.ma b/matita/matita/contribs/lambdadelta/ground/relocation/gr_sle_isd.ma
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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                  *)
-(*                                                                        *)
-(**************************************************************************)
-
-include "ground/relocation/gr_isd.ma".
-include "ground/relocation/gr_sle.ma".
-
-(* INCLUSION FOR GENERIC RELOCATION MAPS ************************************)
-
-(* Constructions with gr_isd ************************************************)
-
-(*** sle_isdiv_dx *)
-corec lemma gr_sle_isd_dx:
-            ∀f2. 𝛀❪f2❫ → ∀f1. f1 ⊆ f2.
-#f2 * -f2
-#f2 #g2 #Hf2 #H2 #f1 cases (gr_map_split_tl f1) *
-/3 width=5 by gr_sle_weak, gr_sle_next/
-qed.
-
-(* Inversions with gr_isd ***************************************************)
-
-(*** sle_inv_isdiv_sn *)
-corec lemma gr_sle_inv_isd_sn:
-            ∀f1,f2. f1 ⊆ f2 → 𝛀❪f1❫ → 𝛀❪f2❫.
-#f1 #f2 * -f1 -f2
-#f1 #f2 #g1 #g2 #Hf * * #H
-[1,3: elim (gr_isd_inv_push … H) // ]
-lapply (gr_isd_inv_next … H ??) -H
-/3 width=3 by gr_isd_next/
-qed-.