matita/matita/contribs/lambdadelta/basic_2/rt_transition/lpr_length.ma

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   3 (*      ||M||                                                             *)
   4 (*      ||A||       A project by Andrea Asperti                           *)
   5 (*      ||T||                                                             *)
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  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 "static_2/relocation/lex_length.ma".
  16 include "basic_2/rt_transition/lpr.ma".
  17
  18 (* PARALLEL R-TRANSITION FOR FULL LOCAL ENVIRONMENTS ************************)
  19
  20 lemma lpr_fwd_length (h) (G): ∀L1,L2. ❪G,L1❫ ⊢ ➡[h,0] L2 → |L1| = |L2|.
  21 /2 width=2 by lex_fwd_length/ qed-.