X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fdynamic%2Fcnv_preserve_cpes.ma;h=53af95906e66e5ace9c5e17748582cf349adc462;hp=55ce4a7005012f52b39b540f3fbd5c96fe5225e2;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_preserve_cpes.ma b/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_preserve_cpes.ma
index 55ce4a700..53af95906 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_preserve_cpes.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/dynamic/cnv_preserve_cpes.ma
@@ -22,8 +22,8 @@ include "basic_2/dynamic/cnv_cpmre.ma".
 (* Properties with t-bound rt-equivalence for terms *************************)
 
 lemma cnv_cpes_dec (h) (a) (n1) (n2) (G) (L):
-      ∀T1. ⦃G,L⦄ ⊢ T1 ![h,a] → ∀T2. ⦃G,L⦄ ⊢ T2 ![h,a] →
-      Decidable … (⦃G,L⦄ ⊢ T1 ⬌*[h,n1,n2] T2).
+      ∀T1. ❪G,L❫ ⊢ T1 ![h,a] → ∀T2. ❪G,L❫ ⊢ T2 ![h,a] →
+      Decidable … (❪G,L❫ ⊢ T1 ⬌*[h,n1,n2] T2).
 #h #a #n1 #n2 #G #L #T1 #HT1 #T2 #HT2
 elim (cnv_fwd_aaa … HT1) #A1 #HA1
 elim (cnv_fwd_aaa … HT2) #A2 #HA2