X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Fs_computation%2Ffqup_drops.ma;fp=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Fs_computation%2Ffqup_drops.ma;h=9e34b8d59478c1040b5e812093c74aa92c614024;hb=8ec019202bff90959cf1a7158b309e7f83fa222e;hp=2b5173d75bfbb82709e3a043b1a5ad92347252e9;hpb=33d0a7a9029859be79b25b5a495e0f30dab11f37;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/static_2/s_computation/fqup_drops.ma b/matita/matita/contribs/lambdadelta/static_2/s_computation/fqup_drops.ma
index 2b5173d75..9e34b8d59 100644
--- a/matita/matita/contribs/lambdadelta/static_2/s_computation/fqup_drops.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/s_computation/fqup_drops.ma
@@ -20,7 +20,7 @@ include "static_2/s_computation/fqup.ma".
 (* Properties with generic slicing for local environments *******************)
 
 lemma fqup_drops_succ: ∀b,G,K,T,i,L,U. ⇩[↑i] L ≘ K → ⇧[↑i] T ≘ U →
-                       ❪G,L,U❫ ⬂+[b] ❪G,K,T❫.
+                       ❨G,L,U❩ ⬂+[b] ❨G,K,T❩.
 #b #G #K #T #i elim i -i
 [ #L #U #HLK #HTU elim (drops_inv_succ … HLK) -HLK
   #I #Y #HY #H destruct <(drops_fwd_isid … HY) -K //
@@ -33,7 +33,7 @@ lemma fqup_drops_succ: ∀b,G,K,T,i,L,U. ⇩[↑i] L ≘ K → ⇧[↑i] T ≘ U
 qed.
 
 lemma fqup_drops_strap1: ∀b,G1,G2,L1,K1,K2,T1,T2,U1,i. ⇩[i] L1 ≘ K1 → ⇧[i] T1 ≘ U1 →
-                         ❪G1,K1,T1❫ ⬂[b] ❪G2,K2,T2❫ → ❪G1,L1,U1❫ ⬂+[b] ❪G2,K2,T2❫.
+                         ❨G1,K1,T1❩ ⬂[b] ❨G2,K2,T2❩ → ❨G1,L1,U1❩ ⬂+[b] ❨G2,K2,T2❩.
 #b #G1 #G2 #L1 #K1 #K2 #T1 #T2 #U1 *
 [ #HLK1 #HTU1 #HT12
   >(drops_fwd_isid … HLK1) -L1 //
@@ -42,5 +42,5 @@ lemma fqup_drops_strap1: ∀b,G1,G2,L1,K1,K2,T1,T2,U1,i. ⇩[i] L1 ≘ K1 → 
 ]
 qed-.
 
-lemma fqup_lref: ∀b,I,G,L,K,V,i. ⇩[i] L ≘ K.ⓑ[I]V → ❪G,L,#i❫ ⬂+[b] ❪G,K,V❫.
+lemma fqup_lref: ∀b,I,G,L,K,V,i. ⇩[i] L ≘ K.ⓑ[I]V → ❨G,L,#i❩ ⬂+[b] ❨G,K,V❩.
 /2 width=6 by fqup_drops_strap1/ qed.