(* *)
(**************************************************************************)
+include "ground/relocation/tr_compose_compose.ma".
+include "ground/relocation/tr_compose_pn.ma".
include "delayed_updating/substitution/lift_eq.ma".
-axiom lift_path_after (p) (f1) (f2):
+lemma lift_path_after (p) (f1) (f2):
↑[f2]↑[f1]p = ↑[f2∘f1]p.
-(*
-#p @(path_ind_lift … p) -p // [ #n | #n #l #p | #p ] #IH #f1 #f2
-[ <lift_path_d_empty_sn <lift_path_d_empty_sn
-| <lift_path_d_lcons_sn <lift_path_d_lcons_sn
+#p @(path_ind_lift … p) -p // [ #n #l #p | #p ] #IH #f1 #f2
+[ <lift_path_d_lcons_sn <lift_path_d_lcons_sn
+ >(lift_path_eq_repl … (tr_compose_assoc …)) //
| <lift_path_L_sn <lift_path_L_sn <lift_path_L_sn
-*)
+ >tr_compose_push_bi //
+]
+qed.
+
include "delayed_updating/substitution/lift_prototerm.ma".
axiom lift_term_after (t) (f1) (f2):
(* LIFT FOR PROTOTERM *******************************************************)
lemma lift_iref_after_sn (f) (t) (n:pnat):
- ↑[f∘𝐮❨n❩]t ⊆ ↑[f](𝛗n.t).
+ (↑[f∘𝐮❨n❩]t) ⊆ ↑[f](𝛗n.t).
#f #t #n #p * #q #Hq #H0 destruct
@(ex2_intro … (𝗱n◗𝗺◗q))
/2 width=1 by in_comp_iref/