matita/matita/contribs/lambda_delta/basic_2/etc/csup/yprs_csups.etc

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  14
  15 include "basic_2/unfold/csups.ma".
  16 include "basic_2/computation/yprs.ma".
  17
  18 (* HYPER PARALLEL COMPUTATION ON CLOSURES ***********************************)
  19
  20 (* Properties on iterated supclosure ****************************************)
  21
  22 lemma csups_yprs: ∀h,g,L1,L2,T1,T2. ⦃L1, T1⦄ >* ⦃L2, T2⦄ →
  23                   h ⊢ ⦃L1, T1⦄ •⥸*[g] ⦃L2, T2⦄.
  24 #h #g #L1 #L2 #T1 #T2 #H @(csups_ind … H) -L2 -T2 /3 width=1/ /3 width=4/
  25 qed.