--- /dev/null
+(**************************************************************************)
+(* ___ *)
+(* ||M|| *)
+(* ||A|| A project by Andrea Asperti *)
+(* ||T|| *)
+(* ||I|| Developers: *)
+(* ||T|| The HELM team. *)
+(* ||A|| http://helm.cs.unibo.it *)
+(* \ / *)
+(* \ / This file is distributed under the terms of the *)
+(* v GNU General Public License Version 2 *)
+(* *)
+(**************************************************************************)
+
+include "delayed_updating/substitution/prelift_label.ma".
+include "ground/relocation/tr_pap_eq.ma".
+
+(* PRELIFT FOR LABEL ********************************************************)
+
+(* constructions with tr_map_eq *********************************************)
+
+lemma prelift_label_eq_repl (l):
+ stream_eq_repl … (λf1,f2. ↑[f1]l = ↑[f2]l).
+* //
+#k #f1 #f2 #Hf
+<prelift_label_d <prelift_label_d
+/3 width=1 by tr_pap_eq_repl, eq_f/
+qed.