(* FREE VARIABLES INCLUSION FOR RESTRICTED CLOSURES *************************)
definition fsle: bi_relation lenv term ≝ λL1,T1,L2,T2.
- â\88\83â\88\83n1,n2,f1,f2. L1 â\8a¢ ð\9d\90\85+â\9dªT1â\9d« â\89\98 f1 & L2 â\8a¢ ð\9d\90\85+â\9dªT2â\9d« ≘ f2 &
+ â\88\83â\88\83n1,n2,f1,f2. L1 â\8a¢ ð\9d\90\85+â\9d¨T1â\9d© â\89\98 f1 & L2 â\8a¢ ð\9d\90\85+â\9d¨T2â\9d© ≘ f2 &
L1 ≋ⓧ*[n1,n2] L2 & ⫰*[n1]f1 ⊆ ⫰*[n2]f2.
interpretation "free variables inclusion (restricted closure)"
(* Basic properties *********************************************************)
-lemma fsle_sort: â\88\80L,s1,s2. â\9dªL,â\8b\86s1â\9d« â\8a\86 â\9dªL,â\8b\86s2â\9d«.
+lemma fsle_sort: â\88\80L,s1,s2. â\9d¨L,â\8b\86s1â\9d© â\8a\86 â\9d¨L,â\8b\86s2â\9d©.
/3 width=8 by frees_sort, pr_sle_refl, ex4_4_intro/ qed.
-lemma fsle_gref: â\88\80L,l1,l2. â\9dªL,§l1â\9d« â\8a\86 â\9dªL,§l2â\9d«.
+lemma fsle_gref: â\88\80L,l1,l2. â\9d¨L,§l1â\9d© â\8a\86 â\9d¨L,§l2â\9d©.
/3 width=8 by frees_gref, pr_sle_refl, ex4_4_intro/ qed.