X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_computation%2Frsx_rsx.ma;h=88d4f1c90f95897b26e33e355292f589e75415ad;hb=80ecd5486c6013f6c297173f41432fd1d93814ef;hp=d1a72230bc4bf978c2d9baed17e9c1036704c9d2;hpb=b118146b97959e6a6dde18fdd014b8e1e676a2d1;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/rsx_rsx.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/rsx_rsx.ma
index d1a72230b..88d4f1c90 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/rsx_rsx.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/rsx_rsx.ma
@@ -33,7 +33,7 @@ qed-.
 (* Basic_2A1: uses: lsx_lpx_trans *)
 lemma rsx_lpx_trans (G):
       ∀L1,T. G ⊢ ⬈*𝐒[T] L1 →
-      ∀L2. ❪G,L1❫ ⊢ ⬈ L2 → G ⊢ ⬈*𝐒[T] L2.
+      ∀L2. ❨G,L1❩ ⊢ ⬈ L2 → G ⊢ ⬈*𝐒[T] L2.
 #G #L1 #T #H @(rsx_ind … H) -L1 #L1 #HL1 #IHL1 #L2 #HL12
 elim (reqx_dec … L1 L2 T) /3 width=4 by rsx_reqx_trans/
 qed-.