X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Fdynamic%2Fnta_eval.ma;h=1aafc9815b3fbe9dde4fe62f631f851399de8b24;hp=3a8971fd8076212c14d812ce81e871ba310ae310;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/basic_2/dynamic/nta_eval.ma b/matita/matita/contribs/lambdadelta/basic_2/dynamic/nta_eval.ma
index 3a8971fd8..1aafc9815 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/dynamic/nta_eval.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/dynamic/nta_eval.ma
@@ -20,12 +20,12 @@ include "basic_2/dynamic/nta_preserve.ma".
 (* Properties with evaluations for rt-transition on terms *******************)
 
 lemma nta_typecheck_dec (h) (a) (G) (L): ac_props a →
-      ∀T,U. Decidable … (⦃G,L⦄ ⊢ T :[h,a] U).
+      ∀T,U. Decidable … (❪G,L❫ ⊢ T :[h,a] U).
 /2 width=1 by cnv_dec/ qed-.
 
 (* Basic_1: uses: ty3_inference *)
 lemma nta_inference_dec (h) (a) (G) (L) (T): ac_props a →
-      Decidable (∃U. ⦃G,L⦄ ⊢ T :[h,a] U).
+      Decidable (∃U. ❪G,L❫ ⊢ T :[h,a] U).
 #h #a #G #L #T #Ha
 elim (cnv_dec h … G L T Ha) -Ha #HT
 [ /3 width=1 by cnv_nta_sn, or_introl/