matita/matita/contribs/lambdadelta/basic_2/relocation/drops_ceq.ma

   1 (**************************************************************************)
   2 (*       ___                                                              *)
   3 (*      ||M||                                                             *)
   4 (*      ||A||       A project by Andrea Asperti                           *)
   5 (*      ||T||                                                             *)
   6 (*      ||I||       Developers:                                           *)
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   9 (*      \   /                                                             *)
  10 (*       \ /        This file is distributed under the terms of the       *)
  11 (*        v         GNU General Public License Version 2                  *)
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  13 (**************************************************************************)
  14
  15 include "basic_2/relocation/drops.ma".
  16
  17 (* GENERIC SLICING FOR LOCAL ENVIRONMENTS ***********************************)
  18
  19 (* Properties with context-sensitive equivalence for terms ******************)
  20
  21 lemma ceq_lift_sn: d_liftable2_sn ceq.
  22 /2 width=3 by ex2_intro/ qed-.
  23
  24 lemma ceq_inv_lift_sn: d_deliftable2_sn ceq.
  25 /2 width=3 by ex2_intro/ qed-.
  26
  27 (* Note: d_deliftable2_sn cfull does not hold *)
  28 lemma cfull_lift_sn: d_liftable2_sn cfull.
  29 #K #T1 #T2 #_ #b #f #L #_ #U1 #_ -K -T1 -b
  30 elim (lifts_total T2 f) /2 width=3 by ex2_intro/
  31 qed-.