X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_transition%2Fcnx_cnx.ma;h=ba56c516c71b77e992f8af5cdbe9abf6dd67a129;hb=b2cdc4abd9ac87e39bc51b0d9c38daea179adbd5;hp=43fccb612f5249d9f64e19d6bf03e426dbfbd5f5;hpb=adb9ba187619cea977d1d22971eba27eb437cd6a;p=helm.git

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 43fccb612..ba56c516c 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
@@ -15,13 +15,13 @@
 include "basic_2/rt_transition/rpx_reqx.ma".
 include "basic_2/rt_transition/cnx.ma".
 
-(* NORMAL TERMS FOR UNBOUND CONTEXT-SENSITIVE PARALLEL RT-TRANSITION ********)
+(* NORMAL TERMS FOR EXTENDED CONTEXT-SENSITIVE PARALLEL RT-TRANSITION *******)
 
 (* Advanced properties ******************************************************)
 
-lemma cnx_teqx_trans: ∀h,G,L,T1. ⦃G,L⦄ ⊢ ⬈[h] 𝐍⦃T1⦄ →
-                      ∀T2. T1 ≛ T2 → ⦃G,L⦄ ⊢ ⬈[h] 𝐍⦃T2⦄.
-#h #G #L #T1 #HT1 #T2 #HT12 #T #HT2
-elim (teqx_cpx_trans … HT12 … HT2) -HT2 #T0 #HT10 #HT0
-lapply (HT1 … HT10) -HT1 -HT10 /2 width=5 by teqx_repl/ (**) (* full auto fails *)
+lemma cnx_teqx_trans (G) (L):
+      ∀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 *)
 qed-.