X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_computation%2Fcpms_reqx.ma;h=78294ec717c64a6d005ee73d8aecccce27f3fefa;hp=cda3b2b8ebaa462409fa6bbe690194da06f98956;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpms_reqx.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpms_reqx.ma
index cda3b2b8e..78294ec71 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpms_reqx.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpms_reqx.ma
@@ -20,11 +20,11 @@ include "basic_2/rt_computation/cpms_cpxs.ma".
 (* Properties with sort-irrelevant equivalence for local environments *******)
 
 lemma cpms_reqx_conf_sn (h) (n) (G) (L1) (L2):
-                        ∀T1,T2. ⦃G,L1⦄ ⊢ T1 ➡*[n,h] T2 →
+                        ∀T1,T2. ❪G,L1❫ ⊢ T1 ➡*[n,h] T2 →
                         L1 ≛[T1] L2 → L1 ≛[T2] L2.
 /3 width=5 by cpms_fwd_cpxs, cpxs_reqx_conf_sn/ qed-.
 
 lemma cpms_reqx_conf_dx (h) (n) (G) (L1) (L2):
-                        ∀T1,T2. ⦃G,L2⦄ ⊢ T1 ➡*[n,h] T2 →
+                        ∀T1,T2. ❪G,L2❫ ⊢ T1 ➡*[n,h] T2 →
                         L1 ≛[T1] L2 → L1 ≛[T2] L2.
 /3 width=5 by cpms_fwd_cpxs, cpxs_reqx_conf_dx/ qed-.