--- /dev/null
+(**************************************************************************)
+(* ___ *)
+(* ||M|| *)
+(* ||A|| A project by Andrea Asperti *)
+(* ||T|| *)
+(* ||I|| Developers: *)
+(* ||T|| The HELM team. *)
+(* ||A|| http://helm.tcs.unibo.it *)
+(* \ / *)
+(* \ / This file is distributed under the terms of the *)
+(* v GNU General Public License Version 2 *)
+(* *)
+(**************************************************************************)
+
+include "ground/arith/nat_plus.ma".
+include "ground/relocation/rtmap_uni.ma".
+include "ground/relocation/rtmap_nat.ma".
+
+(* NON-NEGATIVE APPLICATION FOR RELOCATION MAPS *****************************)
+
+(* Properties with uniform relocations **************************************)
+
+lemma rm_nat_uni (n) (l): @āāŖl,šāØnā©ā« ā l+n.
+#n @(nat_ind_succ ā¦ n) -n /2 width=5 by rm_nat_next/
+qed.
+
+(* Inversion lemmas with uniform relocations ********************************)
+
+lemma rm_nat_inv_uni (n) (l) (k): @āāŖl,šāØnā©ā« ā k ā k = l+n.
+/2 width=4 by rm_nat_mono/ qed-.