bug fix in big-tree reduction

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / computation / fpbg.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/computation/fpbg.ma b/matita/matita/contribs/lambdadelta/basic_2/computation/fpbg.ma
index 98a890ffe34f7014f187dc748bab4d09fe167a4c..5a7e77736f3eaa4bf6b87171d745cf5a32ebefdc 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/computation/fpbg.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/computation/fpbg.ma
@@ -13,6 +13,7 @@
 (**************************************************************************)
 
 include "basic_2/notation/relations/btpredstarproper_8.ma".
+include "basic_2/substitution/fsupp.ma".
 include "basic_2/reduction/fpbc.ma".
 include "basic_2/computation/fpbs.ma".
 
@@ -69,7 +70,7 @@ qed-.
 
 lemma fsupp_fpbg: ∀h,g,G1,G2,L1,L2,T1,T2. ⦃G1, L1, T1⦄ ⊃+ ⦃G2, L2, T2⦄ → ⦃G1, L1, T1⦄ >[h, g] ⦃G2, L2, T2⦄.
 #h #g #G1 #G2 #L1 #L2 #T1 #T2 #H @(fsupp_ind … L2 T2 H) -G2 -L2 -T2
-/3 width=5 by fsupp_fpbs, fpbc_fsup, fpbc_fpbg, fpbg_inj/
+/4 width=5 by fpbg_strap1, fpbc_fpbg, fpbc_fsup, fpb_fsupq, fsup_fsupq/
 qed.
 
 lemma cpxs_fpbg: ∀h,g,G,L,T1,T2. ⦃G, L⦄ ⊢ T1 ➡*[h, g] T2 → (T1 = T2 → ⊥) →