matita/matita/contribs/lambdadelta/static_2/static/aaa_feqx.ma

   1 (**************************************************************************)
   2 (*       ___                                                              *)
   3 (*      ||M||                                                             *)
   4 (*      ||A||       A project by Andrea Asperti                           *)
   5 (*      ||T||                                                             *)
   6 (*      ||I||       Developers:                                           *)
   7 (*      ||T||         The HELM team.                                      *)
   8 (*      ||A||         http://helm.cs.unibo.it                             *)
   9 (*      \   /                                                             *)
  10 (*       \ /        This file is distributed under the terms of the       *)
  11 (*        v         GNU General Public License Version 2                  *)
  12 (*                                                                        *)
  13 (**************************************************************************)
  14
  15 include "static_2/static/feqx.ma".
  16 include "static_2/static/aaa_reqx.ma".
  17
  18 (* ATONIC ARITY ASSIGNMENT ON TERMS *****************************************)
  19
  20 (* Properties with sort-irrelevant equivalence on referred entries **********)
  21
  22 lemma aaa_feqx_conf: ∀G1,G2,L1,L2,T1,T2. ❪G1,L1,T1❫ ≛ ❪G2,L2,T2❫ →
  23                      ∀A. ❪G1,L1❫ ⊢ T1 ⁝ A → ❪G2,L2❫ ⊢ T2 ⁝ A.
  24 #G1 #G2 #L1 #L2 #T1 #T2 * -G2 -L2 -T2
  25 /2 width=5 by aaa_teqx_conf_reqx/ qed-.