X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_transition%2Fcnx_cnx.ma;h=46dccc509a4daa74c4313ec6dedf96aff5e292d6;hp=ba56c516c71b77e992f8af5cdbe9abf6dd67a129;hb=b118146b97959e6a6dde18fdd014b8e1e676a2d1;hpb=613d8642b1154dde0c026cbdcd96568910198251

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cnx_cnx.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cnx_cnx.ma
index ba56c516c..46dccc509 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cnx_cnx.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cnx_cnx.ma
@@ -12,6 +12,7 @@
 (*                                                                        *)
 (**************************************************************************)
 
+include "static_2/syntax/teqx_teqx.ma".
 include "basic_2/rt_transition/rpx_reqx.ma".
 include "basic_2/rt_transition/cnx.ma".
 
@@ -20,7 +21,7 @@ include "basic_2/rt_transition/cnx.ma".
 (* Advanced properties ******************************************************)
 
 lemma cnx_teqx_trans (G) (L):
-      ∀T1. ❪G,L❫ ⊢ ⬈𝐍 T1 → ∀T2. T1 ≛ T2 → ❪G,L❫ ⊢ ⬈𝐍 T2.
+      ∀T1. ❪G,L❫ ⊢ ⬈𝐍 T1 → ∀T2. T1 ≅ T2 → ❪G,L❫ ⊢ ⬈𝐍 T2.
 #G #L #T1 #HT1 #T2 #HT12 #T #HT2
 lapply (teqx_cpx_trans … HT12 … HT2) -HT2 #H
 lapply (HT1 … H) -HT1 -H /2 width=5 by teqx_canc_sn/ (**) (* full auto fails *)