--- /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 *)
+(* *)
+(**************************************************************************)
+
+(* This file was automatically generated: do not edit *********************)
+
+include "Basic-1/C/defs.ma".
+
+include "Basic-1/lift/defs.ma".
+
+include "Basic-1/r/defs.ma".
+
+inductive drop: nat \to (nat \to (C \to (C \to Prop))) \def
+| drop_refl: \forall (c: C).(drop O O c c)
+| drop_drop: \forall (k: K).(\forall (h: nat).(\forall (c: C).(\forall (e:
+C).((drop (r k h) O c e) \to (\forall (u: T).(drop (S h) O (CHead c k u)
+e))))))
+| drop_skip: \forall (k: K).(\forall (h: nat).(\forall (d: nat).(\forall (c:
+C).(\forall (e: C).((drop h (r k d) c e) \to (\forall (u: T).(drop h (S d)
+(CHead c k (lift h (r k d) u)) (CHead e k u)))))))).
+