--- /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 "ground_2/relocation/rtmap_basic_after.ma".
+include "static_2/notation/relations/rlift_4.ma".
+include "static_2/relocation/lifts.ma".
+
+(* GENERIC RELOCATION FOR TERMS *********************************************)
+
+interpretation "basic relocation (term)"
+ 'RLift m n T1 T2 = (lifts (basic m n) T1 T2).
+
+(* Properties with basic relocation *****************************************)
+
+lemma lifts_lref_lt (m,n,i): i < m → ⬆[m,n] #i ≘ #i.
+/3 width=1 by lifts_lref, at_basic_lt/ qed.
+
+lemma lifts_lref_ge (m,n,i): m ≤ i → ⬆[m,n] #i ≘ #(n+i).
+/3 width=1 by lifts_lref, at_basic_ge/ qed.
+
+lemma lifts_lref_ge_minus (m,n,i): n+m ≤ i → ⬆[m,n] #(i-n) ≘ #i.
+#m #n #i #Hi
+>(plus_minus_m_m i n) in ⊢ (???%);
+/3 width=2 by lifts_lref_ge, le_plus_to_minus_l, le_plus_b/
+qed.