X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_computation%2Fcpxs_feqx.ma;h=abbddfab7a31a7dafb901af68da5816325df1f0e;hp=23709c96393c8286f5ee3e05a477a70541bad296;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpxs_feqx.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpxs_feqx.ma
index 23709c963..abbddfab7 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpxs_feqx.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_computation/cpxs_feqx.ma
@@ -19,9 +19,9 @@ include "basic_2/rt_computation/cpxs_reqx.ma".
 
 (* Properties with sort-irrelevant equivalence for closures *****************)
 
-lemma feqx_cpxs_trans: ∀h,G1,G2,L1,L2,T1,T. ⦃G1,L1,T1⦄ ≛ ⦃G2,L2,T⦄ →
-                       ∀T2. ⦃G2,L2⦄ ⊢ T ⬈*[h] T2 →
-                       ∃∃T0. ⦃G1,L1⦄ ⊢ T1 ⬈*[h] T0 & ⦃G1,L1,T0⦄ ≛ ⦃G2,L2,T2⦄.
+lemma feqx_cpxs_trans: ∀h,G1,G2,L1,L2,T1,T. ❪G1,L1,T1❫ ≛ ❪G2,L2,T❫ →
+                       ∀T2. ❪G2,L2❫ ⊢ T ⬈*[h] T2 →
+                       ∃∃T0. ❪G1,L1❫ ⊢ T1 ⬈*[h] T0 & ❪G1,L1,T0❫ ≛ ❪G2,L2,T2❫.
 #h #G1 #G2 #L1 #L2 #T1 #T #H #T2 #HT2
 elim (feqx_inv_gen_dx … H) -H #H #HL12 #HT1 destruct
 elim (reqx_cpxs_trans … HT2 … HL12) #T0 #HT0 #HT02