- tdeq must imply tsts

[helm.git] / matita / matita / contribs / lambdadelta / basic_2 / syntax / tdeq_tdeq.ma

diff --git a/matita/matita/contribs/lambdadelta/basic_2/syntax/tdeq_tdeq.ma b/matita/matita/contribs/lambdadelta/basic_2/syntax/tdeq_tdeq.ma
index af82e7cd76d0ad7c7ae1986d6704a66318058d76..bdb48def69a758cd827d2b26693ee503a2a20565 100644 (file)
--- a/matita/matita/contribs/lambdadelta/basic_2/syntax/tdeq_tdeq.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/syntax/tdeq_tdeq.ma
@@ -24,7 +24,7 @@ theorem tdeq_trans: ∀h,o. Transitive … (tdeq h o).
   elim (tdeq_inv_sort1_deg … H … Hs) -s /2 width=3 by tdeq_sort/
 | #i1 #i #H <(tdeq_inv_lref1 … H) -H //
 | #l1 #l #H <(tdeq_inv_gref1 … H) -H //
-| #I #V1 #V #T1 #T #_ #_ #IHV #IHT #X #H destruct
+| #I #V1 #V #T1 #T #_ #_ #IHV #IHT #X #H
   elim (tdeq_inv_pair1 … H) -H /3 width=1 by tdeq_pair/
 ]
 qed-.