X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fs_transition%2Ffquq_length.ma;h=9cd36968633fa128d105d0147358e4223f2b7328;hp=9e902769408da6a8e84991a41581449792d82b55;hb=222044da28742b24584549ba86b1805a87def070;hpb=93bba1c94779e83184d111cd077d4167e42a74aa

diff --git a/matita/matita/contribs/lambdadelta/basic_2/s_transition/fquq_length.ma b/matita/matita/contribs/lambdadelta/basic_2/s_transition/fquq_length.ma
index 9e9027694..9cd369686 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/s_transition/fquq_length.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/s_transition/fquq_length.ma
@@ -19,7 +19,8 @@ include "basic_2/s_transition/fquq.ma".
 
 (* Forward lemmas with length for local environments ************************)
 
-lemma fquq_fwd_length_lref1: ∀G1,G2,L1,L2,T2,i. ⦃G1, L1, #i⦄ ⊐⸮ ⦃G2, L2, T2⦄ → |L2| ≤ |L1|.
-#G1 #G2 #L1 #L2 #T2 #i #H elim H -H [2: * ]
-/3 width=5 by fqu_fwd_length_lref1, lt_to_le/
+lemma fquq_fwd_length_lref1: ∀b,G1,G2,L1,L2,T2,i. ⦃G1, L1, #i⦄ ⊐⸮[b] ⦃G2, L2, T2⦄ →
+                             |L2| ≤ |L1|.
+#b #G1 #G2 #L1 #L2 #T2 #i #H elim H -H [2: * ]
+/3 width=6 by fqu_fwd_length_lref1, lt_to_le/
 qed-.