X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambda_delta%2Fbasic_2%2Fstatic%2Fsta_sta.ma;h=cfbb192fab6df68598cc6dd149e0a55da4686a1d;hb=bcdba61431ead40a18a6ac04285cd6513d491287;hp=cee17f8dfb1e7ee1c172262403a61d62e44548a6;hpb=1efc4c2c7be1e4aff0ccccabf905d45795b3865f;p=helm.git

diff --git a/matita/matita/contribs/lambda_delta/basic_2/static/sta_sta.ma b/matita/matita/contribs/lambda_delta/basic_2/static/sta_sta.ma
index cee17f8df..cfbb192fa 100644
--- a/matita/matita/contribs/lambda_delta/basic_2/static/sta_sta.ma
+++ b/matita/matita/contribs/lambda_delta/basic_2/static/sta_sta.ma
@@ -38,7 +38,7 @@ theorem sta_mono: ∀h,L,T,U1. ⦃h, L⦄ ⊢ T • U1 →
   elim (sta_inv_bind1 … H) -H #U2 #HTU2 #H destruct /3 width=1/
 | #L #V #T #U1 #_ #IHTU1 #X #H
   elim (sta_inv_appl1 … H) -H #U2 #HTU2 #H destruct /3 width=1/
-| #L #T #U1 #_ #_ #U2 #H
-  elim (sta_inv_cast1 … H) -H //
+| #L #W #T #U1 #_ #IHTU1 #U2 #H
+  lapply (sta_inv_cast1 … H) -H /2 width=1/
 ]
 qed-.