X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Fstatic%2Ffeqx_req.ma;h=466275aad3d7d65aec356244941887833cee8b0b;hb=076439def28e649ec384fae038ed021dadd5f75c;hp=2191862719e3032a4057e315e1ca00bc89385060;hpb=adb9ba187619cea977d1d22971eba27eb437cd6a;p=helm.git

diff --git a/matita/matita/contribs/lambdadelta/static_2/static/feqx_req.ma b/matita/matita/contribs/lambdadelta/static_2/static/feqx_req.ma
index 219186271..466275aad 100644
--- a/matita/matita/contribs/lambdadelta/static_2/static/feqx_req.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/static/feqx_req.ma
@@ -19,8 +19,8 @@ include "static_2/static/feqx.ma".
 
 (* Properties with syntactic equivalence on referred entries ****************)
 
-lemma req_reqx_trans: ∀L1,L,T1. L1 ≡[T1] L →
-                      ∀G1,G2,L2,T2. ⦃G1,L,T1⦄ ≛ ⦃G2,L2,T2⦄ → ⦃G1,L1,T1⦄ ≛ ⦃G2,L2,T2⦄.
+lemma req_feqx_trans: ∀L1,L,T1. L1 ≡[T1] L →
+                      ∀G1,G2,L2,T2. ❪G1,L,T1❫ ≛ ❪G2,L2,T2❫ → ❪G1,L1,T1❫ ≛ ❪G2,L2,T2❫.
 #L1 #L #T1 #HL1 #G1 #G2 #L2 #T2 #H
 elim (feqx_inv_gen_sn … H) -H #H #HL2 #T12 destruct
 /3 width=3 by feqx_intro_sn, req_reqx_trans/