X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Frelocation%2Flifts_tdeq.ma;h=12affa3a16a3af71a20070431cb5b934cf22cabc;hp=fb5d8247f0d32188a677b6b18effa26094d79fb6;hb=0d1dc967bc12041b9d23ee945db9dd91335e8c1d;hpb=50a9ed8c6207145fccf59e6a5dbbff935cd2c6d7

diff --git a/matita/matita/contribs/lambdadelta/static_2/relocation/lifts_tdeq.ma b/matita/matita/contribs/lambdadelta/static_2/relocation/lifts_tdeq.ma
index fb5d8247f..12affa3a1 100644
--- a/matita/matita/contribs/lambdadelta/static_2/relocation/lifts_tdeq.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/relocation/lifts_tdeq.ma
@@ -62,6 +62,9 @@ lemma tdeq_inv_lifts_sn: ∀h,o. deliftable2_sn (tdeq h o).
 ]
 qed-.
 
+lemma tdeq_inv_lifts_dx (h) (o): deliftable2_dx (tdeq h o).
+/3 width=3 by tdeq_inv_lifts_sn, deliftable2_sn_dx, tdeq_sym/ qed-.
+
 lemma tdeq_inv_lifts_bi: ∀h,o. deliftable2_bi (tdeq h o).
 /3 width=6 by tdeq_inv_lifts_sn, deliftable2_sn_bi/ qed-.