matita/matita/contribs/lambdadelta/basic_2/rt_computation/cprs_cpr.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/rt_transition/cpr_cpr.ma".
  16 include "basic_2/rt_computation/cprs_ctc.ma".
  17
  18 (* CONTEXT-SENSITIVE PARALLEL R-COMPUTATION FOR TERMS ***********************)
  19
  20 (* Advanced properties with context-sensitive r-transition for terms ********)
  21
  22 (* Basic_1: was: pr3_strip *)
  23 (* Basic_1: includes: pr1_strip *)
  24 lemma cprs_strip (h) (G) (L): confluent2 … (cpms h G L 0) (cpm h G L 0).
  25 #h #G #L #T0 #T1 #HT01 #T2 #HT02
  26 elim (TC_strip1 … T0 T1 … HT02) -HT02
  27 [ /3 width=3 by cprs_CTC, ex2_intro/ | skip
  28 | /2 width=1 by cprs_inv_CTC/
  29 | /2 width=3 by cpr_conf/
  30 ]
  31 qed-.