X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fapps_2%2Fmodels%2Fdeq_cpr.ma;h=7d648b07543e03d5d9af14c2c6b63a0dbc85cdad;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hp=32d65f5f56cdb5237777ccb9be9233d167793f7c;hpb=cc600ed1e115d5566947288d532a1e89d989227f;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/apps_2/models/deq_cpr.ma b/matita/matita/contribs/lambdadelta/apps_2/models/deq_cpr.ma
index 32d65f5f5..7d648b075 100644
--- a/matita/matita/contribs/lambdadelta/apps_2/models/deq_cpr.ma
+++ b/matita/matita/contribs/lambdadelta/apps_2/models/deq_cpr.ma
@@ -21,7 +21,7 @@ include "apps_2/models/deq.ma".
 (* Forward lemmas with context-sensitive parallel reduction for terms *******)
 
 lemma cpr_fwd_deq (h) (M): is_model M → is_extensional M →
-                           ∀G,L,T1,T2. ⦃G, L⦄ ⊢ T1 ➡[h] T2 → ⦃G, L⦄ ⊢ T1 ≗{M} T2.
+                           ∀G,L,T1,T2. ❪G,L❫ ⊢ T1 ➡[h] T2 → ❪G,L❫ ⊢ T1 ≗{M} T2.
 #h #M #H1M #H2M #G #L #T1 #T2 #H @(cpr_ind … H) -G -L -T1 -T2
 [ /2 width=2 by deq_refl/
 | #G #K #V1 #V2 #W2 #_ #IH #HVW2 #gv #v #H
@@ -51,13 +51,11 @@ lemma cpr_fwd_deq (h) (M): is_model M → is_extensional M →
   | @(mq … H1M) [4,5: /3 width=2 by seq_sym, me/ |1,2: skip ]
     /2 width=1 by/
   ]
-| #G #L #V #U1 #U2 #T2 #_ #IH #HTU2 #gv #lv #Hlv
+| #G #L #V #U1 #T1 #T2 #HTU1 #_ #IH #gv #lv #Hlv
   @(mq … H1M)
   [4: /3 width=2 by seq_sym, md/ | skip
   |3: @(seq_trans … H1M) [2: @mz // | skip ]
-      /3 width=1 by li_abbr/
-  |2: skip ] -L -U1
-  /3 width=1 by lifts_SO_fwd_vpush, seq_sym/
+  ] /3 width=3 by lifts_SO_fwd_vpush, seq_sym/
 | #G #L #V #T1 #T2 #_ #IH #gv #lv #Hlv
   @(seq_trans … H1M) [2: @(me … H1M) | skip ]
   /2 width=1 by/