matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpxs_cnx.ma

   1 (**************************************************************************)
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   3 (*      ||M||                                                             *)
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  10 (*       \ /        This file is distributed under the terms of the       *)
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  14
  15 include "basic_2/rt_transition/cnx_cnx.ma".
  16 include "basic_2/rt_computation/cpxs.ma".
  17
  18 (* UNBOUND CONTEXT-SENSITIVE PARALLEL RT-COMPUTATION FOR TERMS **************)
  19
  20 (* Inversion lemmas with normal terms ***************************************)
  21
  22 lemma cpxs_inv_cnx1: ∀h,G,L,T1,T2. ⦃G,L⦄ ⊢ T1 ⬈*[h] T2 → ⦃G,L⦄ ⊢ ⬈[h] 𝐍⦃T1⦄ →
  23                      T1 ≛ T2.
  24 #h #G #L #T1 #T2 #H @(cpxs_ind_dx … H) -T1
  25 /5 width=9 by cnx_tdeq_trans, tdeq_trans/
  26 qed-.