X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Fs_transition%2Ffqu_length.ma;fp=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Fs_transition%2Ffqu_length.ma;h=08670967425606364056550bcb5dfe2768e1c036;hb=8ec019202bff90959cf1a7158b309e7f83fa222e;hp=5356ed66fefb4d06f94e0626fe45bd8dee7395fb;hpb=33d0a7a9029859be79b25b5a495e0f30dab11f37;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/static_2/s_transition/fqu_length.ma b/matita/matita/contribs/lambdadelta/static_2/s_transition/fqu_length.ma
index 5356ed66f..086709674 100644
--- a/matita/matita/contribs/lambdadelta/static_2/s_transition/fqu_length.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/s_transition/fqu_length.ma
@@ -19,13 +19,13 @@ include "static_2/s_transition/fqu.ma".
 
 (* Forward lemmas with length for local environments ************************)
 
-fact fqu_fwd_length_lref1_aux: ∀b,G1,G2,L1,L2,T1,T2. ❪G1,L1,T1❫ ⬂[b] ❪G2,L2,T2❫ →
+fact fqu_fwd_length_lref1_aux: ∀b,G1,G2,L1,L2,T1,T2. ❨G1,L1,T1❩ ⬂[b] ❨G2,L2,T2❩ →
                                ∀i. T1 = #i → |L2| < |L1|.
 #b #G1 #G2 #L1 #L2 #T1 #T2 #H elim H -G1 -G2 -L1 -L2 -T1 -T2 // [2,3: #p]
 #I #G #L #V #T [1,2: #_ ] #j #H destruct
 qed-.
 
-lemma fqu_fwd_length_lref1: ∀b,G1,G2,L1,L2,T2,i. ❪G1,L1,#i❫ ⬂[b] ❪G2,L2,T2❫ →
+lemma fqu_fwd_length_lref1: ∀b,G1,G2,L1,L2,T2,i. ❨G1,L1,#i❩ ⬂[b] ❨G2,L2,T2❩ →
                             |L2| < |L1|.
 /2 width=8 by fqu_fwd_length_lref1_aux/
 qed-.