X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fcomputation%2Ffpbs_lift.ma;h=70cabad47fd8ba6dc7c3d8b6f45cd0dc96a57166;hb=32bdf7f107be22a121fab8225c5fae4eb6b33633;hp=809bd3358cbe14bcf0186ec8f226f105d9ac2da6;hpb=f5cd5870668ed096f6d93b005e2acd3bd555f3b0;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/computation/fpbs_lift.ma b/matita/matita/contribs/lambdadelta/basic_2/computation/fpbs_lift.ma
index 809bd3358..70cabad47 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/computation/fpbs_lift.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/computation/fpbs_lift.ma
@@ -12,7 +12,7 @@
 (*                                                                        *)
 (**************************************************************************)
 
-include "basic_2/unfold/lsstas_lift.ma".
+include "basic_2/computation/cpxs_lift.ma".
 include "basic_2/computation/fpbs.ma".
 
 (* "BIG TREE" PARALLEL COMPUTATION FOR CLOSURES *****************************)
@@ -21,10 +21,9 @@ include "basic_2/computation/fpbs.ma".
 
 lemma lsstas_fpbs: ∀h,g,G,L,T1,T2,l2. ⦃G, L⦄ ⊢ T1 •*[h, g, l2] T2 →
                    ∀l1. l2 ≤ l1 → ⦃G, L⦄ ⊢ T1 ▪[h, g] l1 → ⦃G, L, T1⦄ ≥[h, g] ⦃G, L, T2⦄.
-#h #g #G #L #T1 #T2 #l2 #H @(lsstas_ind_dx … H) -l2 -T2 //
-#l2 #T #T2 #HT1 #HT2 #IHT1 #l1 >commutative_plus #Hl21 #Hl1
-elim (le_inv_plus_l … Hl21) -Hl21 #Hl12 #Hl21
-lapply (lsstas_da_conf … HT1 … Hl1) -HT1
->(plus_minus_m_m … Hl12) -Hl12
-/3 width=5 by fpb_ssta, fpbs_strap1/
-qed.
+/3 width=5 by cpxs_fpbs, lsstas_cpxs/ qed.
+
+lemma ssta_fpbs: ∀h,g,G,L,T,U,l.
+                 ⦃G, L⦄ ⊢ T ▪[h, g] l+1 → ⦃G, L⦄ ⊢ T •[h, g] U →
+                 ⦃G, L, T⦄ ≥[h, g] ⦃G, L, U⦄.
+/3 width=5 by lsstas_fpbs, ssta_lsstas/ qed.