matita/matita/contribs/lambdadelta/basic_2/etc/xpr/xprs_cprs.etc

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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       *)
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  14
  15 include "basic_2/computation/cprs.ma".
  16 include "basic_2/computation/xprs.ma".
  17
  18 (* EXTENDED PARALLEL COMPUTATION ON TERMS ***********************************)
  19
  20 (* properties on context sensitive parallel computation for terms ***********)
  21
  22 lemma cprs_xprs: ∀h,g,L,T1,T2. L ⊢ T1 ➡* T2 → ⦃h, L⦄ ⊢ T1 •➡*[g] T2.
  23 #h #g #L #T1 #T2 #H @(cprs_ind … H) -T2 // /3 width=3/
  24 qed.