X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_computation%2Fcpxs_fdeq.ma;h=1b12ae605e7467d1d70468310e7029eada2b271f;hp=ed477d71cf6d6622547dd6815487ebec97995c80;hb=f308429a0fde273605a2330efc63268b4ac36c99;hpb=87f57ddc367303c33e19c83cd8989cd561f3185b diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpxs_fdeq.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpxs_fdeq.ma index ed477d71c..1b12ae605 100644 --- a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpxs_fdeq.ma +++ b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpxs_fdeq.ma @@ -19,9 +19,9 @@ include "basic_2/rt_computation/cpxs_rdeq.ma". (* Properties with sort-irrelevant equivalence for closures *****************) -lemma fdeq_cpxs_trans: ∀h,G1,G2,L1,L2,T1,T. ⦃G1, L1, T1⦄ ≛ ⦃G2, L2, T⦄ → - ∀T2. ⦃G2, L2⦄ ⊢ T ⬈*[h] T2 → - ∃∃T0. ⦃G1, L1⦄ ⊢ T1 ⬈*[h] T0 & ⦃G1, L1, T0⦄ ≛ ⦃G2, L2, T2⦄. +lemma fdeq_cpxs_trans: ∀h,G1,G2,L1,L2,T1,T. ⦃G1,L1,T1⦄ ≛ ⦃G2,L2,T⦄ → + ∀T2. ⦃G2,L2⦄ ⊢ T ⬈*[h] T2 → + ∃∃T0. ⦃G1,L1⦄ ⊢ T1 ⬈*[h] T0 & ⦃G1,L1,T0⦄ ≛ ⦃G2,L2,T2⦄. #h #G1 #G2 #L1 #L2 #T1 #T #H #T2 #HT2 elim (fdeq_inv_gen_dx … H) -H #H #HL12 #HT1 destruct elim (rdeq_cpxs_trans … HT2 … HL12) #T0 #HT0 #HT02