matita/matita/contribs/lambda_delta/basic_2/computation/cprs_aaa.ma

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  14
  15 include "basic_2/reducibility/cpr_aaa.ma".
  16 include "basic_2/computation/cprs.ma".
  17
  18 (* CONTEXT-SENSITIVE PARALLEL COMPUTATION ON TERMS **************************)
  19
  20 (* Properties about atomic arity assignment on terms ************************)
  21
  22 lemma aaa_cprs_conf: ∀L,T1,A. L ⊢ T1 ⁝ A → ∀T2. L ⊢ T1 ➡* T2 → L ⊢ T2 ⁝ A.
  23 #L #T1 #A #HT1 #T2 #HT12
  24 @(TC_Conf3 … HT1 ? HT12) /2 width=3/
  25 qed.