X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_transition%2Fcpx_reqx.ma;h=d3cbfa45edf4ede11e2b8aa38d9422ebb2912215;hp=08823139b9529689ada6afa5c43bf87fbb9ce0e0;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpx_reqx.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpx_reqx.ma
index 08823139b..d3cbfa45e 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpx_reqx.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/cpx_reqx.ma
@@ -24,6 +24,6 @@ lemma cpx_reqx_conf_sn: ∀h,G. s_r_confluent1 … (cpx h G) reqx.
 /3 width=6 by cpx_rex_conf/ qed-.
 
 (* Basic_2A1: was just: cpx_lleq_conf_dx *)
-lemma cpx_reqx_conf_dx: ∀h,G,L2,T1,T2. ⦃G,L2⦄ ⊢ T1 ⬈[h] T2 →
+lemma cpx_reqx_conf_dx: ∀h,G,L2,T1,T2. ❪G,L2❫ ⊢ T1 ⬈[h] T2 →
                         ∀L1. L1 ≛[T1] L2 → L1 ≛[T2] L2.
 /4 width=5 by cpx_reqx_conf_sn, reqx_sym/ qed-.