X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_computation%2Fjsx_rsx.ma;h=54db26241fafcb6f3ad356fc96c027e2a0f3322f;hb=e0c91d8a4422da0b39aca790e5826dc8a617b303;hp=44d8ac0299c1a52c6f109411111f1e97eb935e6d;hpb=3c7b4071a9ac096b02334c1d47468776b948e2de;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/jsx_rsx.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/jsx_rsx.ma
index 44d8ac029..54db26241 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/jsx_rsx.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/jsx_rsx.ma
@@ -22,7 +22,7 @@ include "basic_2/rt_computation/jsx.ma".
 
 (* Basic_2A1: uses: lsx_cpx_trans_lcosx *)
 lemma rsx_cpx_trans_jsx (G):
-      ∀L0,T1,T2. ❪G,L0❫ ⊢ T1 ⬈ T2 →
+      ∀L0,T1,T2. ❨G,L0❩ ⊢ T1 ⬈ T2 →
       ∀L. G ⊢ L0 ⊒ L → G ⊢ ⬈*𝐒[T1] L → G ⊢ ⬈*𝐒[T2] L.
 #G #L0 #T1 #T2 #H @(cpx_ind … H) -G -L0 -T1 -T2
 [ //
@@ -64,12 +64,12 @@ qed-.
 
 (* Basic_2A1: uses: lsx_cpx_trans_O *)
 lemma rsx_cpx_trans (G):
-      ∀L,T1,T2. ❪G,L❫ ⊢ T1 ⬈ T2 →
+      ∀L,T1,T2. ❨G,L❩ ⊢ T1 ⬈ T2 →
       G ⊢ ⬈*𝐒[T1] L → G ⊢ ⬈*𝐒[T2] L.
 /3 width=6 by rsx_cpx_trans_jsx, jsx_refl/ qed-.
 
 lemma rsx_cpxs_trans (G):
-      ∀L,T1,T2. ❪G,L❫ ⊢ T1 ⬈* T2 →
+      ∀L,T1,T2. ❨G,L❩ ⊢ T1 ⬈* T2 →
       G ⊢ ⬈*𝐒[T1] L → G ⊢ ⬈*𝐒[T2] L.
 #G #L #T1 #T2 #H
 @(cpxs_ind_dx ??????? H) -T1 //