X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fbasic_2%2Frt_transition%2Ffpb_reqx.ma;h=0cc359e488f30c3e010d21cf4f02cefa7a1e2632;hp=6dea95295ba979225a32429302580193a77d1d14;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/fpb_reqx.ma b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/fpb_reqx.ma
index 6dea95295..0cc359e48 100644
--- a/matita/matita/contribs/lambdadelta/basic_2/rt_transition/fpb_reqx.ma
+++ b/matita/matita/contribs/lambdadelta/basic_2/rt_transition/fpb_reqx.ma
@@ -22,8 +22,8 @@ include "basic_2/rt_transition/fpb.ma".
 (* Properties with sort-irrelevant equivalence for local environments *******)
 
 lemma teqx_fpb_trans: ∀h,U2,U1. U2 ≛ U1 →
-                      ∀G1,G2,L1,L2,T1. ⦃G1,L1,U1⦄ ≻[h] ⦃G2,L2,T1⦄ →
-                      ∃∃L,T2. ⦃G1,L1,U2⦄ ≻[h] ⦃G2,L,T2⦄ & T2 ≛ T1 & L ≛[T1] L2.
+                      ∀G1,G2,L1,L2,T1. ❪G1,L1,U1❫ ≻[h] ❪G2,L2,T1❫ →
+                      ∃∃L,T2. ❪G1,L1,U2❫ ≻[h] ❪G2,L,T2❫ & T2 ≛ T1 & L ≛[T1] L2.
 #h #U2 #U1 #HU21 #G1 #G2 #L1 #L2 #T1 * -G2 -L2 -T1
 [ #G2 #L2 #T1 #H
   elim (teqx_fqu_trans … H … HU21) -H
@@ -37,8 +37,8 @@ qed-.
 
 (* Basic_2A1: was just: lleq_fpb_trans *)
 lemma reqx_fpb_trans: ∀h,F,K1,K2,T. K1 ≛[T] K2 →
-                      ∀G,L2,U. ⦃F,K2,T⦄ ≻[h] ⦃G,L2,U⦄ →
-                      ∃∃L1,U0. ⦃F,K1,T⦄ ≻[h] ⦃G,L1,U0⦄ & U0 ≛ U & L1 ≛[U] L2.
+                      ∀G,L2,U. ❪F,K2,T❫ ≻[h] ❪G,L2,U❫ →
+                      ∃∃L1,U0. ❪F,K1,T❫ ≻[h] ❪G,L1,U0❫ & U0 ≛ U & L1 ≛[U] L2.
 #h #F #K1 #K2 #T #HT #G #L2 #U * -G -L2 -U
 [ #G #L2 #U #H2 elim (reqx_fqu_trans … H2 … HT) -K2
   /3 width=5 by fpb_fqu, ex3_2_intro/