X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frelocation%2Ffsupq.ma;h=4c40afe091f81167218c0907dd293093e3288e91;hb=f95f6cb21b86f3dad114b21f687aa5df36088064;hp=2891cd6856e6d129144be3dc3196197830f47653;hpb=2368e490e9b948097cee58ae7c9d4915d1c3746f;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/relocation/fsupq.ma b/matita/matita/contribs/lambdadelta/basic_2/relocation/fsupq.ma
index 2891cd685..4c40afe09 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/relocation/fsupq.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/relocation/fsupq.ma
@@ -12,6 +12,7 @@
 (*                                                                        *)
 (**************************************************************************)
 
+include "basic_2/notation/relations/suptermopt_4.ma".
 include "basic_2/relocation/fsup.ma".
 
 (* OPTIONAL SUPCLOSURE ******************************************************)
@@ -59,7 +60,7 @@ fact fsupq_fwd_length_lref1_aux: ∀L1,L2,T1,T2. ⦃L1, T1⦄ ⊃⸮ ⦃L2, T2
 #L1 #L2 #T1 #T2 #H elim H -L1 -L2 -T1 -T2 //
 [ #a #I #L #V #T #j #H destruct
 | #L1 #K1 #K2 #T1 #T2 #U1 #d #e #HLK1 #HTU1 #_ #IHT12 #i #H destruct
-  lapply (ldrop_fwd_length … HLK1) -HLK1 #HLK1
+  lapply (ldrop_fwd_length_le4 … HLK1) -HLK1 #HLK1
   elim (lift_inv_lref2 … HTU1) -HTU1 * #Hdei #H destruct
   @(transitive_le … HLK1) /2 width=2/
 ]