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 *)
13 (**************************************************************************)
15 (* This file was automatically generated: do not edit *********************)
17 include "LambdaDelta-1/arity/props.ma".
19 include "LambdaDelta-1/arity/cimp.ma".
21 include "LambdaDelta-1/aprem/props.ma".
24 \forall (g: G).(\forall (c: C).(\forall (t: T).(\forall (a: A).((arity g c t
25 a) \to (\forall (i: nat).(\forall (b: A).((aprem i a b) \to (ex2_3 C T nat
26 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d c))))
27 (\lambda (d: C).(\lambda (u: T).(\lambda (_: nat).(arity g d u (asucc g
30 \lambda (g: G).(\lambda (c: C).(\lambda (t: T).(\lambda (a: A).(\lambda (H:
31 (arity g c t a)).(arity_ind g (\lambda (c0: C).(\lambda (_: T).(\lambda (a0:
32 A).(\forall (i: nat).(\forall (b: A).((aprem i a0 b) \to (ex2_3 C T nat
33 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d c0))))
34 (\lambda (d: C).(\lambda (u: T).(\lambda (_: nat).(arity g d u (asucc g
35 b)))))))))))) (\lambda (c0: C).(\lambda (n: nat).(\lambda (i: nat).(\lambda
36 (b: A).(\lambda (H0: (aprem i (ASort O n) b)).(let H1 \def (match H0 in aprem
37 return (\lambda (n0: nat).(\lambda (a0: A).(\lambda (a1: A).(\lambda (_:
38 (aprem n0 a0 a1)).((eq nat n0 i) \to ((eq A a0 (ASort O n)) \to ((eq A a1 b)
39 \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop
40 (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u: T).(\lambda (_:
41 nat).(arity g d u (asucc g b))))))))))))) with [(aprem_zero a1 a2)
42 \Rightarrow (\lambda (H1: (eq nat O i)).(\lambda (H2: (eq A (AHead a1 a2)
43 (ASort O n))).(\lambda (H3: (eq A a1 b)).(eq_ind nat O (\lambda (n0:
44 nat).((eq A (AHead a1 a2) (ASort O n)) \to ((eq A a1 b) \to (ex2_3 C T nat
45 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus n0 j) O d
46 c0)))) (\lambda (d: C).(\lambda (u: T).(\lambda (_: nat).(arity g d u (asucc
47 g b))))))))) (\lambda (H4: (eq A (AHead a1 a2) (ASort O n))).(let H5 \def
48 (eq_ind A (AHead a1 a2) (\lambda (e: A).(match e in A return (\lambda (_:
49 A).Prop) with [(ASort _ _) \Rightarrow False | (AHead _ _) \Rightarrow
50 True])) I (ASort O n) H4) in (False_ind ((eq A a1 b) \to (ex2_3 C T nat
51 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus O j) O d c0))))
52 (\lambda (d: C).(\lambda (u: T).(\lambda (_: nat).(arity g d u (asucc g
53 b))))))) H5))) i H1 H2 H3)))) | (aprem_succ a2 a0 i0 H1 a1) \Rightarrow
54 (\lambda (H2: (eq nat (S i0) i)).(\lambda (H3: (eq A (AHead a1 a2) (ASort O
55 n))).(\lambda (H4: (eq A a0 b)).(eq_ind nat (S i0) (\lambda (n0: nat).((eq A
56 (AHead a1 a2) (ASort O n)) \to ((eq A a0 b) \to ((aprem i0 a2 a0) \to (ex2_3
57 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus n0 j) O
58 d c0)))) (\lambda (d: C).(\lambda (u: T).(\lambda (_: nat).(arity g d u
59 (asucc g b)))))))))) (\lambda (H5: (eq A (AHead a1 a2) (ASort O n))).(let H6
60 \def (eq_ind A (AHead a1 a2) (\lambda (e: A).(match e in A return (\lambda
61 (_: A).Prop) with [(ASort _ _) \Rightarrow False | (AHead _ _) \Rightarrow
62 True])) I (ASort O n) H5) in (False_ind ((eq A a0 b) \to ((aprem i0 a2 a0)
63 \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop
64 (plus (S i0) j) O d c0)))) (\lambda (d: C).(\lambda (u: T).(\lambda (_:
65 nat).(arity g d u (asucc g b)))))))) H6))) i H2 H3 H4 H1))))]) in (H1
66 (refl_equal nat i) (refl_equal A (ASort O n)) (refl_equal A b))))))))
67 (\lambda (c0: C).(\lambda (d: C).(\lambda (u: T).(\lambda (i: nat).(\lambda
68 (H0: (getl i c0 (CHead d (Bind Abbr) u))).(\lambda (a0: A).(\lambda (_:
69 (arity g d u a0)).(\lambda (H2: ((\forall (i0: nat).(\forall (b: A).((aprem
70 i0 a0 b) \to (ex2_3 C T nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j:
71 nat).(drop (plus i0 j) O d0 d)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda
72 (_: nat).(arity g d0 u0 (asucc g b))))))))))).(\lambda (i0: nat).(\lambda (b:
73 A).(\lambda (H3: (aprem i0 a0 b)).(let H_x \def (H2 i0 b H3) in (let H4 \def
74 H_x in (ex2_3_ind C T nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j:
75 nat).(drop (plus i0 j) O d0 d)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda
76 (_: nat).(arity g d0 u0 (asucc g b))))) (ex2_3 C T nat (\lambda (d0:
77 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i0 j) O d0 c0)))) (\lambda
78 (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0 (asucc g b))))))
79 (\lambda (x0: C).(\lambda (x1: T).(\lambda (x2: nat).(\lambda (H5: (drop
80 (plus i0 x2) O x0 d)).(\lambda (H6: (arity g x0 x1 (asucc g b))).(let H_x0
81 \def (getl_drop_conf_rev (plus i0 x2) x0 d H5 Abbr c0 u i H0) in (let H7 \def
82 H_x0 in (ex2_ind C (\lambda (c1: C).(drop (plus i0 x2) O c1 c0)) (\lambda
83 (c1: C).(drop (S i) (plus i0 x2) c1 x0)) (ex2_3 C T nat (\lambda (d0:
84 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i0 j) O d0 c0)))) (\lambda
85 (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0 (asucc g b))))))
86 (\lambda (x: C).(\lambda (H8: (drop (plus i0 x2) O x c0)).(\lambda (H9: (drop
87 (S i) (plus i0 x2) x x0)).(ex2_3_intro C T nat (\lambda (d0: C).(\lambda (_:
88 T).(\lambda (j: nat).(drop (plus i0 j) O d0 c0)))) (\lambda (d0: C).(\lambda
89 (u0: T).(\lambda (_: nat).(arity g d0 u0 (asucc g b))))) x (lift (S i) (plus
90 i0 x2) x1) x2 H8 (arity_lift g x0 x1 (asucc g b) H6 x (S i) (plus i0 x2)
91 H9))))) H7)))))))) H4)))))))))))))) (\lambda (c0: C).(\lambda (d: C).(\lambda
92 (u: T).(\lambda (i: nat).(\lambda (H0: (getl i c0 (CHead d (Bind Abst)
93 u))).(\lambda (a0: A).(\lambda (_: (arity g d u (asucc g a0))).(\lambda (H2:
94 ((\forall (i0: nat).(\forall (b: A).((aprem i0 (asucc g a0) b) \to (ex2_3 C T
95 nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i0 j) O d0
96 d)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0
97 (asucc g b))))))))))).(\lambda (i0: nat).(\lambda (b: A).(\lambda (H3: (aprem
98 i0 a0 b)).(let H4 \def (H2 i0 b (aprem_asucc g a0 b i0 H3)) in (ex2_3_ind C T
99 nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i0 j) O d0
100 d)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0
101 (asucc g b))))) (ex2_3 C T nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j:
102 nat).(drop (plus i0 j) O d0 c0)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda
103 (_: nat).(arity g d0 u0 (asucc g b)))))) (\lambda (x0: C).(\lambda (x1:
104 T).(\lambda (x2: nat).(\lambda (H5: (drop (plus i0 x2) O x0 d)).(\lambda (H6:
105 (arity g x0 x1 (asucc g b))).(let H_x \def (getl_drop_conf_rev (plus i0 x2)
106 x0 d H5 Abst c0 u i H0) in (let H7 \def H_x in (ex2_ind C (\lambda (c1:
107 C).(drop (plus i0 x2) O c1 c0)) (\lambda (c1: C).(drop (S i) (plus i0 x2) c1
108 x0)) (ex2_3 C T nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j: nat).(drop
109 (plus i0 j) O d0 c0)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda (_:
110 nat).(arity g d0 u0 (asucc g b)))))) (\lambda (x: C).(\lambda (H8: (drop
111 (plus i0 x2) O x c0)).(\lambda (H9: (drop (S i) (plus i0 x2) x
112 x0)).(ex2_3_intro C T nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j:
113 nat).(drop (plus i0 j) O d0 c0)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda
114 (_: nat).(arity g d0 u0 (asucc g b))))) x (lift (S i) (plus i0 x2) x1) x2 H8
115 (arity_lift g x0 x1 (asucc g b) H6 x (S i) (plus i0 x2) H9))))) H7))))))))
116 H4))))))))))))) (\lambda (b: B).(\lambda (_: (not (eq B b Abst))).(\lambda
117 (c0: C).(\lambda (u: T).(\lambda (a1: A).(\lambda (_: (arity g c0 u
118 a1)).(\lambda (_: ((\forall (i: nat).(\forall (b0: A).((aprem i a1 b0) \to
119 (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus
120 i j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d
121 u0 (asucc g b0))))))))))).(\lambda (t0: T).(\lambda (a2: A).(\lambda (_:
122 (arity g (CHead c0 (Bind b) u) t0 a2)).(\lambda (H4: ((\forall (i:
123 nat).(\forall (b0: A).((aprem i a2 b0) \to (ex2_3 C T nat (\lambda (d:
124 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d (CHead c0 (Bind b)
125 u))))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0
126 (asucc g b0))))))))))).(\lambda (i: nat).(\lambda (b0: A).(\lambda (H5:
127 (aprem i a2 b0)).(let H_x \def (H4 i b0 H5) in (let H6 \def H_x in (ex2_3_ind
128 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O
129 d (CHead c0 (Bind b) u))))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_:
130 nat).(arity g d u0 (asucc g b0))))) (ex2_3 C T nat (\lambda (d: C).(\lambda
131 (_: T).(\lambda (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda
132 (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b0)))))) (\lambda (x0:
133 C).(\lambda (x1: T).(\lambda (x2: nat).(\lambda (H7: (drop (plus i x2) O x0
134 (CHead c0 (Bind b) u))).(\lambda (H8: (arity g x0 x1 (asucc g b0))).(let H9
135 \def (eq_ind nat (S (plus i x2)) (\lambda (n: nat).(drop n O x0 c0)) (drop_S
136 b x0 c0 u (plus i x2) H7) (plus i (S x2)) (plus_n_Sm i x2)) in (ex2_3_intro C
137 T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d
138 c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0
139 (asucc g b0))))) x0 x1 (S x2) H9 H8))))))) H6))))))))))))))))) (\lambda (c0:
140 C).(\lambda (u: T).(\lambda (a1: A).(\lambda (H0: (arity g c0 u (asucc g
141 a1))).(\lambda (_: ((\forall (i: nat).(\forall (b: A).((aprem i (asucc g a1)
142 b) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop
143 (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_:
144 nat).(arity g d u0 (asucc g b))))))))))).(\lambda (t0: T).(\lambda (a2:
145 A).(\lambda (_: (arity g (CHead c0 (Bind Abst) u) t0 a2)).(\lambda (H3:
146 ((\forall (i: nat).(\forall (b: A).((aprem i a2 b) \to (ex2_3 C T nat
147 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d (CHead
148 c0 (Bind Abst) u))))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_:
149 nat).(arity g d u0 (asucc g b))))))))))).(\lambda (i: nat).(\lambda (b:
150 A).(\lambda (H4: (aprem i (AHead a1 a2) b)).(nat_ind (\lambda (n:
151 nat).((aprem n (AHead a1 a2) b) \to (ex2_3 C T nat (\lambda (d: C).(\lambda
152 (_: T).(\lambda (j: nat).(drop (plus n j) O d c0)))) (\lambda (d: C).(\lambda
153 (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b)))))))) (\lambda (H5:
154 (aprem O (AHead a1 a2) b)).(let H6 \def (match H5 in aprem return (\lambda
155 (n: nat).(\lambda (a0: A).(\lambda (a3: A).(\lambda (_: (aprem n a0 a3)).((eq
156 nat n O) \to ((eq A a0 (AHead a1 a2)) \to ((eq A a3 b) \to (ex2_3 C T nat
157 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus O j) O d c0))))
158 (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g
159 b))))))))))))) with [(aprem_zero a0 a3) \Rightarrow (\lambda (_: (eq nat O
160 O)).(\lambda (H7: (eq A (AHead a0 a3) (AHead a1 a2))).(\lambda (H8: (eq A a0
161 b)).((let H9 \def (f_equal A A (\lambda (e: A).(match e in A return (\lambda
162 (_: A).A) with [(ASort _ _) \Rightarrow a3 | (AHead _ a4) \Rightarrow a4]))
163 (AHead a0 a3) (AHead a1 a2) H7) in ((let H10 \def (f_equal A A (\lambda (e:
164 A).(match e in A return (\lambda (_: A).A) with [(ASort _ _) \Rightarrow a0 |
165 (AHead a4 _) \Rightarrow a4])) (AHead a0 a3) (AHead a1 a2) H7) in (eq_ind A
166 a1 (\lambda (a4: A).((eq A a3 a2) \to ((eq A a4 b) \to (ex2_3 C T nat
167 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus O j) O d c0))))
168 (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g
169 b))))))))) (\lambda (H11: (eq A a3 a2)).(eq_ind A a2 (\lambda (_: A).((eq A
170 a1 b) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j:
171 nat).(drop (plus O j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda
172 (_: nat).(arity g d u0 (asucc g b)))))))) (\lambda (H12: (eq A a1 b)).(eq_ind
173 A b (\lambda (_: A).(ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda
174 (j: nat).(drop (plus O j) O d c0)))) (\lambda (d: C).(\lambda (u0:
175 T).(\lambda (_: nat).(arity g d u0 (asucc g b))))))) (eq_ind A a1 (\lambda
176 (a4: A).(ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j:
177 nat).(drop (plus O j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda
178 (_: nat).(arity g d u0 (asucc g a4))))))) (ex2_3_intro C T nat (\lambda (d:
179 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus O j) O d c0)))) (\lambda (d:
180 C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g a1))))) c0 u O
181 (drop_refl c0) H0) b H12) a1 (sym_eq A a1 b H12))) a3 (sym_eq A a3 a2 H11)))
182 a0 (sym_eq A a0 a1 H10))) H9)) H8)))) | (aprem_succ a0 a3 i0 H6 a4)
183 \Rightarrow (\lambda (H7: (eq nat (S i0) O)).(\lambda (H8: (eq A (AHead a4
184 a0) (AHead a1 a2))).(\lambda (H9: (eq A a3 b)).((let H10 \def (eq_ind nat (S
185 i0) (\lambda (e: nat).(match e in nat return (\lambda (_: nat).Prop) with [O
186 \Rightarrow False | (S _) \Rightarrow True])) I O H7) in (False_ind ((eq A
187 (AHead a4 a0) (AHead a1 a2)) \to ((eq A a3 b) \to ((aprem i0 a0 a3) \to
188 (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus
189 O j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d
190 u0 (asucc g b))))))))) H10)) H8 H9 H6))))]) in (H6 (refl_equal nat O)
191 (refl_equal A (AHead a1 a2)) (refl_equal A b)))) (\lambda (i0: nat).(\lambda
192 (_: (((aprem i0 (AHead a1 a2) b) \to (ex2_3 C T nat (\lambda (d: C).(\lambda
193 (_: T).(\lambda (j: nat).(drop (plus i0 j) O d c0)))) (\lambda (d:
194 C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g
195 b))))))))).(\lambda (H5: (aprem (S i0) (AHead a1 a2) b)).(let H6 \def (match
196 H5 in aprem return (\lambda (n: nat).(\lambda (a0: A).(\lambda (a3:
197 A).(\lambda (_: (aprem n a0 a3)).((eq nat n (S i0)) \to ((eq A a0 (AHead a1
198 a2)) \to ((eq A a3 b) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_:
199 T).(\lambda (j: nat).(drop (plus (S i0) j) O d c0)))) (\lambda (d:
200 C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b)))))))))))))
201 with [(aprem_zero a0 a3) \Rightarrow (\lambda (H6: (eq nat O (S
202 i0))).(\lambda (H7: (eq A (AHead a0 a3) (AHead a1 a2))).(\lambda (H8: (eq A
203 a0 b)).((let H9 \def (eq_ind nat O (\lambda (e: nat).(match e in nat return
204 (\lambda (_: nat).Prop) with [O \Rightarrow True | (S _) \Rightarrow False]))
205 I (S i0) H6) in (False_ind ((eq A (AHead a0 a3) (AHead a1 a2)) \to ((eq A a0
206 b) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop
207 (plus (S i0) j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_:
208 nat).(arity g d u0 (asucc g b)))))))) H9)) H7 H8)))) | (aprem_succ a0 a3 i1
209 H6 a4) \Rightarrow (\lambda (H7: (eq nat (S i1) (S i0))).(\lambda (H8: (eq A
210 (AHead a4 a0) (AHead a1 a2))).(\lambda (H9: (eq A a3 b)).((let H10 \def
211 (f_equal nat nat (\lambda (e: nat).(match e in nat return (\lambda (_:
212 nat).nat) with [O \Rightarrow i1 | (S n) \Rightarrow n])) (S i1) (S i0) H7)
213 in (eq_ind nat i0 (\lambda (n: nat).((eq A (AHead a4 a0) (AHead a1 a2)) \to
214 ((eq A a3 b) \to ((aprem n a0 a3) \to (ex2_3 C T nat (\lambda (d: C).(\lambda
215 (_: T).(\lambda (j: nat).(drop (plus (S i0) j) O d c0)))) (\lambda (d:
216 C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b))))))))))
217 (\lambda (H11: (eq A (AHead a4 a0) (AHead a1 a2))).(let H12 \def (f_equal A A
218 (\lambda (e: A).(match e in A return (\lambda (_: A).A) with [(ASort _ _)
219 \Rightarrow a0 | (AHead _ a5) \Rightarrow a5])) (AHead a4 a0) (AHead a1 a2)
220 H11) in ((let H13 \def (f_equal A A (\lambda (e: A).(match e in A return
221 (\lambda (_: A).A) with [(ASort _ _) \Rightarrow a4 | (AHead a5 _)
222 \Rightarrow a5])) (AHead a4 a0) (AHead a1 a2) H11) in (eq_ind A a1 (\lambda
223 (_: A).((eq A a0 a2) \to ((eq A a3 b) \to ((aprem i0 a0 a3) \to (ex2_3 C T
224 nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus (S i0) j) O
225 d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0
226 (asucc g b)))))))))) (\lambda (H14: (eq A a0 a2)).(eq_ind A a2 (\lambda (a5:
227 A).((eq A a3 b) \to ((aprem i0 a5 a3) \to (ex2_3 C T nat (\lambda (d:
228 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus (S i0) j) O d c0))))
229 (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g
230 b))))))))) (\lambda (H15: (eq A a3 b)).(eq_ind A b (\lambda (a5: A).((aprem
231 i0 a2 a5) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j:
232 nat).(drop (plus (S i0) j) O d c0)))) (\lambda (d: C).(\lambda (u0:
233 T).(\lambda (_: nat).(arity g d u0 (asucc g b)))))))) (\lambda (H16: (aprem
234 i0 a2 b)).(let H_x \def (H3 i0 b H16) in (let H17 \def H_x in (ex2_3_ind C T
235 nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i0 j) O d
236 (CHead c0 (Bind Abst) u))))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_:
237 nat).(arity g d u0 (asucc g b))))) (ex2_3 C T nat (\lambda (d: C).(\lambda
238 (_: T).(\lambda (j: nat).(drop (plus (S i0) j) O d c0)))) (\lambda (d:
239 C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b)))))) (\lambda
240 (x0: C).(\lambda (x1: T).(\lambda (x2: nat).(\lambda (H18: (drop (plus i0 x2)
241 O x0 (CHead c0 (Bind Abst) u))).(\lambda (H19: (arity g x0 x1 (asucc g
242 b))).(ex2_3_intro C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j:
243 nat).(drop (plus (S i0) j) O d c0)))) (\lambda (d: C).(\lambda (u0:
244 T).(\lambda (_: nat).(arity g d u0 (asucc g b))))) x0 x1 x2 (drop_S Abst x0
245 c0 u (plus i0 x2) H18) H19)))))) H17)))) a3 (sym_eq A a3 b H15))) a0 (sym_eq
246 A a0 a2 H14))) a4 (sym_eq A a4 a1 H13))) H12))) i1 (sym_eq nat i1 i0 H10)))
247 H8 H9 H6))))]) in (H6 (refl_equal nat (S i0)) (refl_equal A (AHead a1 a2))
248 (refl_equal A b)))))) i H4))))))))))))) (\lambda (c0: C).(\lambda (u:
249 T).(\lambda (a1: A).(\lambda (_: (arity g c0 u a1)).(\lambda (_: ((\forall
250 (i: nat).(\forall (b: A).((aprem i a1 b) \to (ex2_3 C T nat (\lambda (d:
251 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d c0)))) (\lambda (d:
252 C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g
253 b))))))))))).(\lambda (t0: T).(\lambda (a2: A).(\lambda (_: (arity g c0 t0
254 (AHead a1 a2))).(\lambda (H3: ((\forall (i: nat).(\forall (b: A).((aprem i
255 (AHead a1 a2) b) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda
256 (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u0:
257 T).(\lambda (_: nat).(arity g d u0 (asucc g b))))))))))).(\lambda (i:
258 nat).(\lambda (b: A).(\lambda (H4: (aprem i a2 b)).(let H5 \def (H3 (S i) b
259 (aprem_succ a2 b i H4 a1)) in (ex2_3_ind C T nat (\lambda (d: C).(\lambda (_:
260 T).(\lambda (j: nat).(drop (S (plus i j)) O d c0)))) (\lambda (d: C).(\lambda
261 (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b))))) (ex2_3 C T nat
262 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d c0))))
263 (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g
264 b)))))) (\lambda (x0: C).(\lambda (x1: T).(\lambda (x2: nat).(\lambda (H6:
265 (drop (S (plus i x2)) O x0 c0)).(\lambda (H7: (arity g x0 x1 (asucc g
266 b))).(C_ind (\lambda (c1: C).((drop (S (plus i x2)) O c1 c0) \to ((arity g c1
267 x1 (asucc g b)) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda
268 (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u0:
269 T).(\lambda (_: nat).(arity g d u0 (asucc g b))))))))) (\lambda (n:
270 nat).(\lambda (H8: (drop (S (plus i x2)) O (CSort n) c0)).(\lambda (_: (arity
271 g (CSort n) x1 (asucc g b))).(and3_ind (eq C c0 (CSort n)) (eq nat (S (plus i
272 x2)) O) (eq nat O O) (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda
273 (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u0:
274 T).(\lambda (_: nat).(arity g d u0 (asucc g b)))))) (\lambda (_: (eq C c0
275 (CSort n))).(\lambda (H11: (eq nat (S (plus i x2)) O)).(\lambda (_: (eq nat O
276 O)).(let H13 \def (eq_ind nat (S (plus i x2)) (\lambda (ee: nat).(match ee in
277 nat return (\lambda (_: nat).Prop) with [O \Rightarrow False | (S _)
278 \Rightarrow True])) I O H11) in (False_ind (ex2_3 C T nat (\lambda (d:
279 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d c0)))) (\lambda (d:
280 C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b)))))) H13)))))
281 (drop_gen_sort n (S (plus i x2)) O c0 H8))))) (\lambda (d: C).(\lambda (IHd:
282 (((drop (S (plus i x2)) O d c0) \to ((arity g d x1 (asucc g b)) \to (ex2_3 C
283 T nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O
284 d0 c0)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0
285 (asucc g b)))))))))).(\lambda (k: K).(\lambda (t1: T).(\lambda (H8: (drop (S
286 (plus i x2)) O (CHead d k t1) c0)).(\lambda (H9: (arity g (CHead d k t1) x1
287 (asucc g b))).(K_ind (\lambda (k0: K).((arity g (CHead d k0 t1) x1 (asucc g
288 b)) \to ((drop (r k0 (plus i x2)) O d c0) \to (ex2_3 C T nat (\lambda (d0:
289 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d0 c0)))) (\lambda
290 (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0 (asucc g b)))))))))
291 (\lambda (b0: B).(\lambda (H10: (arity g (CHead d (Bind b0) t1) x1 (asucc g
292 b))).(\lambda (H11: (drop (r (Bind b0) (plus i x2)) O d c0)).(ex2_3_intro C T
293 nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d0
294 c0)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0
295 (asucc g b))))) (CHead d (Bind b0) t1) x1 (S x2) (eq_ind nat (S (plus i x2))
296 (\lambda (n: nat).(drop n O (CHead d (Bind b0) t1) c0)) (drop_drop (Bind b0)
297 (plus i x2) d c0 H11 t1) (plus i (S x2)) (plus_n_Sm i x2)) H10)))) (\lambda
298 (f: F).(\lambda (H10: (arity g (CHead d (Flat f) t1) x1 (asucc g
299 b))).(\lambda (H11: (drop (r (Flat f) (plus i x2)) O d c0)).(let H12 \def
300 (IHd H11 (arity_cimp_conf g (CHead d (Flat f) t1) x1 (asucc g b) H10 d
301 (cimp_flat_sx f d t1))) in (ex2_3_ind C T nat (\lambda (d0: C).(\lambda (_:
302 T).(\lambda (j: nat).(drop (plus i j) O d0 c0)))) (\lambda (d0: C).(\lambda
303 (u0: T).(\lambda (_: nat).(arity g d0 u0 (asucc g b))))) (ex2_3 C T nat
304 (\lambda (d0: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d0
305 c0)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0
306 (asucc g b)))))) (\lambda (x3: C).(\lambda (x4: T).(\lambda (x5:
307 nat).(\lambda (H13: (drop (plus i x5) O x3 c0)).(\lambda (H14: (arity g x3 x4
308 (asucc g b))).(ex2_3_intro C T nat (\lambda (d0: C).(\lambda (_: T).(\lambda
309 (j: nat).(drop (plus i j) O d0 c0)))) (\lambda (d0: C).(\lambda (u0:
310 T).(\lambda (_: nat).(arity g d0 u0 (asucc g b))))) x3 x4 x5 H13 H14))))))
311 H12))))) k H9 (drop_gen_drop k d c0 t1 (plus i x2) H8)))))))) x0 H6 H7))))))
312 H5)))))))))))))) (\lambda (c0: C).(\lambda (u: T).(\lambda (a0: A).(\lambda
313 (_: (arity g c0 u (asucc g a0))).(\lambda (_: ((\forall (i: nat).(\forall (b:
314 A).((aprem i (asucc g a0) b) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_:
315 T).(\lambda (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda
316 (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b))))))))))).(\lambda (t0:
317 T).(\lambda (_: (arity g c0 t0 a0)).(\lambda (H3: ((\forall (i: nat).(\forall
318 (b: A).((aprem i a0 b) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_:
319 T).(\lambda (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda
320 (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b))))))))))).(\lambda (i:
321 nat).(\lambda (b: A).(\lambda (H4: (aprem i a0 b)).(let H_x \def (H3 i b H4)
322 in (let H5 \def H_x in (ex2_3_ind C T nat (\lambda (d: C).(\lambda (_:
323 T).(\lambda (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda
324 (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b))))) (ex2_3 C T nat
325 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d c0))))
326 (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g
327 b)))))) (\lambda (x0: C).(\lambda (x1: T).(\lambda (x2: nat).(\lambda (H6:
328 (drop (plus i x2) O x0 c0)).(\lambda (H7: (arity g x0 x1 (asucc g
329 b))).(ex2_3_intro C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j:
330 nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda
331 (_: nat).(arity g d u0 (asucc g b))))) x0 x1 x2 H6 H7)))))) H5))))))))))))))
332 (\lambda (c0: C).(\lambda (t0: T).(\lambda (a1: A).(\lambda (_: (arity g c0
333 t0 a1)).(\lambda (H1: ((\forall (i: nat).(\forall (b: A).((aprem i a1 b) \to
334 (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus
335 i j) O d c0)))) (\lambda (d: C).(\lambda (u: T).(\lambda (_: nat).(arity g d
336 u (asucc g b))))))))))).(\lambda (a2: A).(\lambda (H2: (leq g a1
337 a2)).(\lambda (i: nat).(\lambda (b: A).(\lambda (H3: (aprem i a2 b)).(let H_x
338 \def (aprem_repl g a1 a2 H2 i b H3) in (let H4 \def H_x in (ex2_ind A
339 (\lambda (b1: A).(leq g b1 b)) (\lambda (b1: A).(aprem i a1 b1)) (ex2_3 C T
340 nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d
341 c0)))) (\lambda (d: C).(\lambda (u: T).(\lambda (_: nat).(arity g d u (asucc
342 g b)))))) (\lambda (x: A).(\lambda (H5: (leq g x b)).(\lambda (H6: (aprem i
343 a1 x)).(let H_x0 \def (H1 i x H6) in (let H7 \def H_x0 in (ex2_3_ind C T nat
344 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d c0))))
345 (\lambda (d: C).(\lambda (u: T).(\lambda (_: nat).(arity g d u (asucc g
346 x))))) (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop
347 (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u: T).(\lambda (_:
348 nat).(arity g d u (asucc g b)))))) (\lambda (x0: C).(\lambda (x1: T).(\lambda
349 (x2: nat).(\lambda (H8: (drop (plus i x2) O x0 c0)).(\lambda (H9: (arity g x0
350 x1 (asucc g x))).(ex2_3_intro C T nat (\lambda (d: C).(\lambda (_:
351 T).(\lambda (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u:
352 T).(\lambda (_: nat).(arity g d u (asucc g b))))) x0 x1 x2 H8 (arity_repl g
353 x0 x1 (asucc g x) H9 (asucc g b) (asucc_repl g x b H5)))))))) H7))))))
354 H4))))))))))))) c t a H))))).