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

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  14
  15 include "basic_2/rt_computation/fpbs_lpxs.ma".
  16 include "basic_2/rt_computation/fpbg.ma".
  17
  18 (* PROPER PARALLEL RST-COMPUTATION FOR CLOSURES *****************************)
  19
  20 (* Properties with unbound rt-computation on full local environments ********)
  21
  22 (* Basic_2A1: uses: lpxs_fpbg *)
  23 lemma lpxs_rdneq_fpbg: ∀h,G,L1,L2,T. ⦃G, L1⦄ ⊢ ⬈*[h] L2 →
  24                        (L1 ≛[T] L2 → ⊥) → ⦃G, L1, T⦄ >[h] ⦃G, L2, T⦄.
  25 #h #G #L1 #L2 #T #H #H0
  26 elim (lpxs_rdneq_inv_step_sn … H … H0) -H -H0
  27 /4 width=7 by fpb_lpx, lpxs_fdeq_fpbs, fdeq_intro_sn, ex2_3_intro/
  28 qed.