X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Fstatic%2Ffeqx.ma;h=2ec73d338dd37fd4b0a45d513c3f44d7673c5809;hp=a341e76880549692fe03d10c70943d3c83882c96;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/static_2/static/feqx.ma b/matita/matita/contribs/lambdadelta/static_2/static/feqx.ma
index a341e7688..2ec73d338 100644
--- a/matita/matita/contribs/lambdadelta/static_2/static/feqx.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/static/feqx.ma
@@ -30,17 +30,17 @@ interpretation
 (* Basic_properties *********************************************************)
 
 lemma feqx_intro_dx (G): ∀L1,L2,T2. L1 ≛[T2] L2 →
-                         ∀T1. T1 ≛ T2 → ⦃G,L1,T1⦄ ≛ ⦃G,L2,T2⦄.
+                         ∀T1. T1 ≛ T2 → ❪G,L1,T1❫ ≛ ❪G,L2,T2❫.
 /3 width=3 by feqx_intro_sn, teqx_reqx_div/ qed.
 
 (* Basic inversion lemmas ***************************************************)
 
-lemma feqx_inv_gen_sn: ∀G1,G2,L1,L2,T1,T2. ⦃G1,L1,T1⦄ ≛ ⦃G2,L2,T2⦄ →
+lemma feqx_inv_gen_sn: ∀G1,G2,L1,L2,T1,T2. ❪G1,L1,T1❫ ≛ ❪G2,L2,T2❫ →
                        ∧∧ G1 = G2 & L1 ≛[T1] L2 & T1 ≛ T2.
 #G1 #G2 #L1 #L2 #T1 #T2 * -G2 -L2 -T2 /2 width=1 by and3_intro/
 qed-.
 
-lemma feqx_inv_gen_dx: ∀G1,G2,L1,L2,T1,T2. ⦃G1,L1,T1⦄ ≛ ⦃G2,L2,T2⦄ →
+lemma feqx_inv_gen_dx: ∀G1,G2,L1,L2,T1,T2. ❪G1,L1,T1❫ ≛ ❪G2,L2,T2❫ →
                        ∧∧ G1 = G2 & L1 ≛[T2] L2 & T1 ≛ T2.
 #G1 #G2 #L1 #L2 #T1 #T2 * -G2 -L2 -T2
 /3 width=3 by teqx_reqx_conf, and3_intro/