1 (**************************************************************************)
4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
8 (* ||A|| http://helm.cs.unibo.it *)
10 (* \ / This file is distributed under the terms of the *)
11 (* v GNU General Public License Version 2 *)
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15 (* This file was automatically generated: do not edit *********************)
17 include "basic_1/arity/props.ma".
19 include "basic_1/drop1/fwd.ma".
22 \forall (g: G).(\forall (a: A).(\forall (c2: C).(\forall (hds:
23 PList).(\forall (c1: C).(\forall (t: T).((drop1 hds c1 c2) \to ((arity g c2 t
24 a) \to (arity g c1 (lift1 hds t) a))))))))
26 \lambda (g: G).(\lambda (a: A).(\lambda (c2: C).(\lambda (hds:
27 PList).(PList_ind (\lambda (p: PList).(\forall (c1: C).(\forall (t:
28 T).((drop1 p c1 c2) \to ((arity g c2 t a) \to (arity g c1 (lift1 p t) a))))))
29 (\lambda (c1: C).(\lambda (t: T).(\lambda (H: (drop1 PNil c1 c2)).(\lambda
30 (H0: (arity g c2 t a)).(let H_y \def (drop1_gen_pnil c1 c2 H) in (eq_ind_r C
31 c2 (\lambda (c: C).(arity g c t a)) H0 c1 H_y)))))) (\lambda (n:
32 nat).(\lambda (n0: nat).(\lambda (p: PList).(\lambda (H: ((\forall (c1:
33 C).(\forall (t: T).((drop1 p c1 c2) \to ((arity g c2 t a) \to (arity g c1
34 (lift1 p t) a))))))).(\lambda (c1: C).(\lambda (t: T).(\lambda (H0: (drop1
35 (PCons n n0 p) c1 c2)).(\lambda (H1: (arity g c2 t a)).(let H_x \def
36 (drop1_gen_pcons c1 c2 p n n0 H0) in (let H2 \def H_x in (ex2_ind C (\lambda
37 (c3: C).(drop n n0 c1 c3)) (\lambda (c3: C).(drop1 p c3 c2)) (arity g c1
38 (lift n n0 (lift1 p t)) a) (\lambda (x: C).(\lambda (H3: (drop n n0 c1
39 x)).(\lambda (H4: (drop1 p x c2)).(arity_lift g x (lift1 p t) a (H x t H4 H1)
40 c1 n n0 H3)))) H2))))))))))) hds)))).