- the trace is explicit in all auto tactics with depth > 1

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / static / lsubd_lsubd.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/static/lsubd_lsubd.ma b/matita/matita/contribs/lambdadelta/basic_2/static/lsubd_lsubd.ma
index 18670b4f1addac953987c491f8076291e977266f..270cdbd9defa357a6d62817f78cb30df1a0dbea2 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/static/lsubd_lsubd.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/static/lsubd_lsubd.ma
@@ -23,7 +23,7 @@ theorem lsubd_trans: ∀h,g,G. Transitive … (lsubd h g G).
 [ #X #H >(lsubd_inv_atom1 … H) -H //
 | #I #L1 #L #Y #HL1 #IHL1 #X #H
   elim (lsubd_inv_pair1 … H) -H * #L2
-  [ #HL2 #H destruct /3 width=1/
+  [ #HL2 #H destruct /3 width=1 by lsubd_pair/
   | #W #V #d #HV #HW #HL2 #H1 #H2 #H3 destruct
     /3 width=3 by lsubd_beta, lsubd_da_trans/
   ]