X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambda_delta%2Fbasic_2%2Funfold%2Fdelift_delift.ma;h=a4c94fedcbeb774f99f01bbbe2412fb35643dfa2;hb=cb38da6095e3af84131a3ebf47a9f252f34a804c;hp=753e88796c8ed9f6e54bc5cb1df5a24ad8c3103b;hpb=636c25914e83819c2f529edc891a7eb899499a97;p=helm.git

diff --git a/matita/matita/contribs/lambda_delta/basic_2/unfold/delift_delift.ma b/matita/matita/contribs/lambda_delta/basic_2/unfold/delift_delift.ma
index 753e88796..a4c94fedc 100644
--- a/matita/matita/contribs/lambda_delta/basic_2/unfold/delift_delift.ma
+++ b/matita/matita/contribs/lambda_delta/basic_2/unfold/delift_delift.ma
@@ -12,6 +12,7 @@
 (*                                                                        *)
 (**************************************************************************)
 
+include "basic_2/substitution/lift_lift.ma".
 include "basic_2/unfold/tpss_tpss.ma".
 include "basic_2/unfold/delift.ma".
 
@@ -20,7 +21,7 @@ include "basic_2/unfold/delift.ma".
 (* Main properties **********************************************************)
 
 theorem delift_mono: ∀L,T,T1,T2,d,e.
-                     L ⊢ T [d, e] ≡ T1 → L ⊢ T [d, e] ≡ T2 → T1 = T2.
+                     L ⊢ T ▼*[d, e] ≡ T1 → L ⊢ T ▼*[d, e] ≡ T2 → T1 = T2.
 #L #T #T1 #T2 #d #e * #U1 #H1TU1 #H2TU1 * #U2 #H1TU2 #H2TU2
 elim (tpss_conf_eq … H1TU1 … H1TU2) -T #U #HU1 #HU2
 lapply (tpss_inv_lift1_eq … HU1 … H2TU1) -HU1 #H destruct