matita/matita/contribs/lambdadelta/basic_2/rt_equivalence/cpcs_lsubr.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 "basic_2/rt_computation/cpms_lsubr.ma".
  16 include "basic_2/rt_equivalence/cpcs_cprs.ma".
  17
  18 (* CONTEXT-SENSITIVE PARALLEL R-EQUIVALENCE FOR TERMS ***********************)
  19
  20 (* Properties with restricted refinement for local environments *************)
  21
  22 lemma lsubr_cpcs_trans (h) (G): lsub_trans … (cpcs h G) lsubr.
  23 #h #G #L1 #T1 #T2 #HT12 elim (cpcs_inv_cprs … HT12) -HT12
  24 /3 width=5 by cprs_div, lsubr_cpms_trans/
  25 qed-.