X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fapps_2%2Fmodels%2Fveq_lifts.ma;h=e25f47051d053d5c892d67fb599d57b55fa44e41;hb=25c634037771dff0138e5e8e3d4378183ff49b86;hp=943f8f5af9169bde5c8896aff7ce21d61c60f06f;hpb=cc6fcb70ca4f3cf01205ed722d75a2fdb2aaf779;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/apps_2/models/veq_lifts.ma b/matita/matita/contribs/lambdadelta/apps_2/models/veq_lifts.ma
index 943f8f5af..e25f47051 100644
--- a/matita/matita/contribs/lambdadelta/apps_2/models/veq_lifts.ma
+++ b/matita/matita/contribs/lambdadelta/apps_2/models/veq_lifts.ma
@@ -21,8 +21,8 @@ include "apps_2/models/veq.ma".
 (* Forward lemmas with generic relocation ***********************************)
 
 fact lifts_fwd_vpush_aux (M): is_model M → is_extensional M →
-                              ∀f,T1,T2. ⬆*[f] T1 ≘ T2 → ∀m. 𝐁❴m,1❵ = f →
-                              ∀gv,lv,d. ⟦T1⟧[gv, lv] ≗{M} ⟦T2⟧[gv, ⫯[m←d]lv].
+                              ∀f,T1,T2. ⇧*[f] T1 ≘ T2 → ∀m. 𝐁❨m,1❩ = f →
+                              ∀gv,lv,d. ⟦T1⟧[gv,lv] ≗{M} ⟦T2⟧[gv,⫯[m←d]lv].
 #M #H1M #H2M #f #T1 #T2 #H elim H -f -T1 -T2
 [ #f #s #m #Hf #gv #lv #d
   @(mq … H1M) [4,5: /3 width=2 by seq_sym, ms/ |1,2: skip ]
@@ -40,6 +40,7 @@ fact lifts_fwd_vpush_aux (M): is_model M → is_extensional M →
   /2 width=1 by mr/
 | #f #p * #V1 #V2 #T1 #T2 #_ #_ #IHV #IHT #m #Hm #gv #lv #d destruct
   [ @(mq … H1M) [4,5: /3 width=2 by seq_sym, md/ |1,2: skip ]
+    @mc [3:|*: /2 width=1 by/ ]
     @(seq_trans … H1M)
     [3: @ti_comp // | skip ]
     [1,2: /2 width=2 by veq_refl/ ]
@@ -65,6 +66,6 @@ fact lifts_fwd_vpush_aux (M): is_model M → is_extensional M →
 qed-.
 
 lemma lifts_SO_fwd_vpush (M) (gv): is_model M → is_extensional M →
-                                   ∀T1,T2. ⬆*[1] T1 ≘ T2 →
-                                   ∀lv,d. ⟦T1⟧[gv, lv] ≗{M} ⟦T2⟧[gv, ⫯[0←d]lv].
+                                   ∀T1,T2. ⇧[1] T1 ≘ T2 →
+                                   ∀lv,d. ⟦T1⟧[gv,lv] ≗{M} ⟦T2⟧[gv,⫯[0←d]lv].
 /2 width=3 by lifts_fwd_vpush_aux/ qed-.