X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fdynamic%2Fcnv_cpcs.ma;h=8487f16881870159ef6910b552d85ae4c788c9b4;hp=5ed59b73998fdea2032d31ac4a3995b80d6938a9;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_cpcs.ma b/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_cpcs.ma
index 5ed59b739..8487f1688 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_cpcs.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_cpcs.ma
@@ -21,8 +21,8 @@ include "basic_2/dynamic/cnv_aaa.ma".
 (* Properties with r-equivalence ********************************************)
 
 lemma cnv_cpcs_dec (h) (a) (G) (L):
-      ∀T1. ⦃G,L⦄ ⊢ T1 ![h,a] → ∀T2. ⦃G,L⦄ ⊢ T2 ![h,a] →
-      Decidable … (⦃G,L⦄ ⊢ T1 ⬌*[h] T2).
+      ∀T1. ❪G,L❫ ⊢ T1 ![h,a] → ∀T2. ❪G,L❫ ⊢ T2 ![h,a] →
+      Decidable … (❪G,L❫ ⊢ T1 ⬌*[h] T2).
 #h #a #G #L #T1 #HT1 #T2 #HT2
 elim (cnv_fwd_aaa … HT1) -HT1 #A1 #HA1
 elim (cnv_fwd_aaa … HT2) -HT2 #A2 #HA2