X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Fstatic%2Ffsle.ma;h=5b7bb2eed891a8fe8472306b0942acc39ee75c46;hp=fb9814c227f8426ac7f61cb5590584b8f997915b;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/static_2/static/fsle.ma b/matita/matita/contribs/lambdadelta/static_2/static/fsle.ma
index fb9814c22..5b7bb2eed 100644
--- a/matita/matita/contribs/lambdadelta/static_2/static/fsle.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/static/fsle.ma
@@ -21,7 +21,7 @@ include "static_2/static/frees.ma".
 (* FREE VARIABLES INCLUSION FOR RESTRICTED CLOSURES *************************)
 
 definition fsle: bi_relation lenv term ≝ λL1,T1,L2,T2.
-                 ∃∃n1,n2,f1,f2. L1 ⊢ 𝐅+⦃T1⦄ ≘ f1 & L2 ⊢ 𝐅+⦃T2⦄ ≘ f2 &
+                 ∃∃n1,n2,f1,f2. L1 ⊢ 𝐅+❪T1❫ ≘ f1 & L2 ⊢ 𝐅+❪T2❫ ≘ f2 &
                                 L1 ≋ⓧ*[n1,n2] L2 & ⫱*[n1]f1 ⊆ ⫱*[n2]f2.
 
 interpretation "free variables inclusion (restricted closure)"
@@ -32,8 +32,8 @@ interpretation "free variables inclusion (term)"
 
 (* Basic properties *********************************************************)
 
-lemma fsle_sort: ∀L,s1,s2. ⦃L,⋆s1⦄ ⊆ ⦃L,⋆s2⦄.
+lemma fsle_sort: ∀L,s1,s2. ❪L,⋆s1❫ ⊆ ❪L,⋆s2❫.
 /3 width=8 by frees_sort, sle_refl, ex4_4_intro/ qed.
 
-lemma fsle_gref: ∀L,l1,l2. ⦃L,§l1⦄ ⊆ ⦃L,§l2⦄.
+lemma fsle_gref: ∀L,l1,l2. ❪L,§l1❫ ⊆ ❪L,§l2❫.
 /3 width=8 by frees_gref, sle_refl, ex4_4_intro/ qed.