X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fcomputation%2Flsx_csx.ma;h=fa00a907d909c416d4b3279b482523173bb2ab41;hb=5275f55f5ec528edbb223834f3ec2cf1d3ce9b84;hp=67f754b7bb918c0bfcf7a71ef34a25072f1cc49d;hpb=57d4059f087d447300841f92d4724ab61f0e3d20;p=helm.git diff --git a/matita/matita/contribs/lambdadelta/basic_2/computation/lsx_csx.ma b/matita/matita/contribs/lambdadelta/basic_2/computation/lsx_csx.ma index 67f754b7b..fa00a907d 100644 --- a/matita/matita/contribs/lambdadelta/basic_2/computation/lsx_csx.ma +++ b/matita/matita/contribs/lambdadelta/basic_2/computation/lsx_csx.ma @@ -19,10 +19,10 @@ include "basic_2/computation/lcosx_cpx.ma". (* Advanced properties ******************************************************) -lemma lsx_lref_be_lpxs: ∀h,g,I,G,K1,V,i,l. l ≤ yinj i → ⦃G, K1⦄ ⊢ ⬊*[h, g] V → - ∀K2. G ⊢ ⬊*[h, g, V, 0] K2 → ⦃G, K1⦄ ⊢ ➡*[h, g] K2 → - ∀L2. ⬇[i] L2 ≡ K2.ⓑ{I}V → G ⊢ ⬊*[h, g, #i, l] L2. -#h #g #I #G #K1 #V #i #l #Hli #H @(csx_ind_alt … H) -V +lemma lsx_lref_be_lpxs: ∀h,o,I,G,K1,V,i,l. l ≤ yinj i → ⦃G, K1⦄ ⊢ ⬊*[h, o] V → + ∀K2. G ⊢ ⬊*[h, o, V, 0] K2 → ⦃G, K1⦄ ⊢ ➡*[h, o] K2 → + ∀L2. ⬇[i] L2 ≡ K2.ⓑ{I}V → G ⊢ ⬊*[h, o, #i, l] L2. +#h #o #I #G #K1 #V #i #l #Hli #H @(csx_ind_alt … H) -V #V0 #_ #IHV0 #K2 #H @(lsx_ind … H) -K2 #K0 #HK0 #IHK0 #HK10 #L0 #HLK0 @lsx_intro #L2 #HL02 #HnL02 elim (lpx_drop_conf … HLK0 … HL02) -HL02 @@ -35,15 +35,15 @@ elim (eq_term_dec V0 V2) #HnV02 destruct [ -IHV0 -HV02 -HK0 | -IHK0 -HnL02 -HLK0 ] qed. -lemma lsx_lref_be: ∀h,g,I,G,K,V,i,l. l ≤ yinj i → ⦃G, K⦄ ⊢ ⬊*[h, g] V → - G ⊢ ⬊*[h, g, V, 0] K → - ∀L. ⬇[i] L ≡ K.ⓑ{I}V → G ⊢ ⬊*[h, g, #i, l] L. +lemma lsx_lref_be: ∀h,o,I,G,K,V,i,l. l ≤ yinj i → ⦃G, K⦄ ⊢ ⬊*[h, o] V → + G ⊢ ⬊*[h, o, V, 0] K → + ∀L. ⬇[i] L ≡ K.ⓑ{I}V → G ⊢ ⬊*[h, o, #i, l] L. /2 width=8 by lsx_lref_be_lpxs/ qed. (* Main properties **********************************************************) -theorem csx_lsx: ∀h,g,G,L,T. ⦃G, L⦄ ⊢ ⬊*[h, g] T → ∀l. G ⊢ ⬊*[h, g, T, l] L. -#h #g #G #L #T @(fqup_wf_ind_eq … G L T) -G -L -T +theorem csx_lsx: ∀h,o,G,L,T. ⦃G, L⦄ ⊢ ⬊*[h, o] T → ∀l. G ⊢ ⬊*[h, o, T, l] L. +#h #o #G #L #T @(fqup_wf_ind_eq … G L T) -G -L -T #Z #Y #X #IH #G #L * * // [ #i #HG #HL #HT #H #l destruct elim (lt_or_ge i (|L|)) /2 width=1 by lsx_lref_free/