X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fstatic%2Flsuba_ldrop.ma;h=05afc6ebd5816d83b7194858c00d170183b112d3;hb=2a91f2b3a85bc0e89c942823b741cf243db5875d;hp=bb412f1c51f210789f842205496796f0670a63e3;hpb=3cf712a7a75b57fb24f8dbed3f6f28d70dbf5be3;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/static/lsuba_ldrop.ma b/matita/matita/contribs/lambdadelta/basic_2/static/lsuba_ldrop.ma
index bb412f1c5..05afc6ebd 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/static/lsuba_ldrop.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/static/lsuba_ldrop.ma
@@ -26,7 +26,7 @@ lemma lsuba_ldrop_O1_conf: ∀G,L1,L2. G ⊢ L1 ⁝⊑ L2 → ∀K1,e. ⇩[0, e]
 | #I #L1 #L2 #V #_ #IHL12 #K1 #e #H
   elim (ldrop_inv_O1_pair1 … H) -H * #He #HLK1
   [ destruct
-    elim (IHL12 L1 0 ?) -IHL12 // #X #HL12 #H
+    elim (IHL12 L1 0) -IHL12 // #X #HL12 #H
     <(ldrop_inv_O2 … H) in HL12; -H /3 width=3/
   | elim (IHL12 … HLK1) -L1 /3 width=3/
   ]