matita/matita/contribs/lambdadelta/basic_2/rt_transition/lfpx_length.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                  *)
  12 (*                                                                        *)
  13 (**************************************************************************)
  14
  15 include "basic_2/static/lfxs_length.ma".
  16 include "basic_2/rt_transition/lfpx.ma".
  17
  18 (* UNCOUNTED PARALLEL RT-TRANSITION FOR LOCAL ENV.S ON REFERRED ENTRIES *****)
  19
  20 (* Forward lemmas with length for local environments ************************)
  21
  22 (* Basic_2A1: uses: lpx_fwd_length *)
  23 lemma lfpx_fwd_length: ∀h,G,L1,L2,T. ⦃G, L1⦄ ⊢ ⬈[h, T] L2 → |L1| = |L2|.
  24 /2 width=3 by lfxs_fwd_length/ qed-.