X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=matita%2Fmatita%2Fcontribs%2Flambdadelta%2Fstatic_2%2Fstatic%2Ffsle_length.ma;h=d2968d82a1d040107aaf55223d12dba0357f6c0d;hp=2bf6a6b0b78f799dad42815af67f56d0b143cb25;hb=bd53c4e895203eb049e75434f638f26b5a161a2b;hpb=3b7b8afcb429a60d716d5226a5b6ab0d003228b1

diff --git a/matita/matita/contribs/lambdadelta/static_2/static/fsle_length.ma b/matita/matita/contribs/lambdadelta/static_2/static/fsle_length.ma
index 2bf6a6b0b..d2968d82a 100644
--- a/matita/matita/contribs/lambdadelta/static_2/static/fsle_length.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/static/fsle_length.ma
@@ -19,14 +19,14 @@ include "static_2/static/fsle.ma".
 
 (* Properties with length for local environments ****************************)
 
-lemma fsle_sort_bi: ∀L1,L2,s1,s2. |L1| = |L2| → ⦃L1,⋆s1⦄ ⊆ ⦃L2,⋆s2⦄.
+lemma fsle_sort_bi: ∀L1,L2,s1,s2. |L1| = |L2| → ❪L1,⋆s1❫ ⊆ ❪L2,⋆s2❫.
 /3 width=8 by lveq_length_eq, frees_sort, sle_refl, ex4_4_intro/ qed.
 
-lemma fsle_gref_bi: ∀L1,L2,l1,l2. |L1| = |L2| → ⦃L1,§l1⦄ ⊆ ⦃L2,§l2⦄.
+lemma fsle_gref_bi: ∀L1,L2,l1,l2. |L1| = |L2| → ❪L1,§l1❫ ⊆ ❪L2,§l2❫.
 /3 width=8 by lveq_length_eq, frees_gref, sle_refl, ex4_4_intro/ qed.
 
-lemma fsle_pair_bi: ∀K1,K2. |K1| = |K2| → ∀V1,V2. ⦃K1,V1⦄ ⊆ ⦃K2,V2⦄ →
-                    ∀I1,I2. ⦃K1.ⓑ{I1}V1,#O⦄ ⊆ ⦃K2.ⓑ{I2}V2,#O⦄.
+lemma fsle_pair_bi: ∀K1,K2. |K1| = |K2| → ∀V1,V2. ❪K1,V1❫ ⊆ ❪K2,V2❫ →
+                    ∀I1,I2. ❪K1.ⓑ[I1]V1,#O❫ ⊆ ❪K2.ⓑ[I2]V2,#O❫.
 #K1 #K2 #HK #V1 #V2
 * #n1 #n2 #f1 #f2 #Hf1 #Hf2 #HK12 #Hf12
 #I1 #I2
@@ -35,6 +35,6 @@ elim (lveq_inj_length … HK12) // -HK #H1 #H2 destruct
 qed.
 
 lemma fsle_unit_bi: ∀K1,K2. |K1| = |K2| →
-                    ∀I1,I2. ⦃K1.ⓤ{I1},#O⦄ ⊆ ⦃K2.ⓤ{I2},#O⦄.
+                    ∀I1,I2. ❪K1.ⓤ[I1],#O❫ ⊆ ❪K2.ⓤ[I2],#O❫.
 /3 width=8 by frees_unit, lveq_length_eq, sle_refl, ex4_4_intro/
 qed.