update in ground_2, static_2, basic_2, apps_2, alpha_1

[helm.git] / matita / matita / contribs / lambdadelta / static_2 / static / lsubf_frees.ma

diff --git a/matita/matita/contribs/lambdadelta/static_2/static/lsubf_frees.ma b/matita/matita/contribs/lambdadelta/static_2/static/lsubf_frees.ma
index 7a39036b54c50d6aedd9b809cc404996e26c8d20..de32a2f006af60383aa4c1c062b612c6c942441b 100644 (file)
--- a/matita/matita/contribs/lambdadelta/static_2/static/lsubf_frees.ma
+++ b/matita/matita/contribs/lambdadelta/static_2/static/lsubf_frees.ma
@@ -18,8 +18,9 @@ include "static_2/static/lsubf.ma".
 
 (* Properties with context-sensitive free variables *************************)
 
-lemma lsubf_frees_trans: ∀f2,L2,T. L2 ⊢ 𝐅*⦃T⦄ ≘ f2 →
-                         ∀f1,L1. ⦃L1, f1⦄ ⫃𝐅* ⦃L2, f2⦄ → L1 ⊢ 𝐅*⦃T⦄ ≘ f1.
+lemma lsubf_frees_trans:
+      ∀f2,L2,T. L2 ⊢ 𝐅+❪T❫ ≘ f2 →
+      ∀f1,L1. ❪L1,f1❫ ⫃𝐅+ ❪L2,f2❫ → L1 ⊢ 𝐅+❪T❫ ≘ f1.
 #f2 #L2 #T #H elim H -f2 -L2 -T
 [ /3 width=5 by lsubf_fwd_isid_dx, frees_sort/
 | #f2 #i #Hf2 #g1 #Y1 #H