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4 (* ||A|| A project by Andrea Asperti *)
6 (* ||I|| Developers: *)
7 (* ||T|| The HELM team. *)
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11 (* v GNU General Public License Version 2 *)
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15 (* This file was automatically generated: do not edit *********************)
17 set "baseuri" "cic:/matita/LAMBDA-TYPES/Level-1/LambdaDelta/arity/aprem".
19 include "arity/props.ma".
21 include "arity/cimp.ma".
23 include "aprem/props.ma".
26 \forall (g: G).(\forall (c: C).(\forall (t: T).(\forall (a: A).((arity g c t
27 a) \to (\forall (i: nat).(\forall (b: A).((aprem i a b) \to (ex2_3 C T nat
28 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d c))))
29 (\lambda (d: C).(\lambda (u: T).(\lambda (_: nat).(arity g d u (asucc g
32 \lambda (g: G).(\lambda (c: C).(\lambda (t: T).(\lambda (a: A).(\lambda (H:
33 (arity g c t a)).(arity_ind g (\lambda (c0: C).(\lambda (_: T).(\lambda (a0:
34 A).(\forall (i: nat).(\forall (b: A).((aprem i a0 b) \to (ex2_3 C T nat
35 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d c0))))
36 (\lambda (d: C).(\lambda (u: T).(\lambda (_: nat).(arity g d u (asucc g
37 b)))))))))))) (\lambda (c0: C).(\lambda (n: nat).(\lambda (i: nat).(\lambda
38 (b: A).(\lambda (H0: (aprem i (ASort O n) b)).(let H1 \def (match H0 in aprem
39 return (\lambda (n0: nat).(\lambda (a0: A).(\lambda (a1: A).(\lambda (_:
40 (aprem n0 a0 a1)).((eq nat n0 i) \to ((eq A a0 (ASort O n)) \to ((eq A a1 b)
41 \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop
42 (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u: T).(\lambda (_:
43 nat).(arity g d u (asucc g b))))))))))))) with [(aprem_zero a1 a2)
44 \Rightarrow (\lambda (H1: (eq nat O i)).(\lambda (H2: (eq A (AHead a1 a2)
45 (ASort O n))).(\lambda (H3: (eq A a1 b)).(eq_ind nat O (\lambda (n0:
46 nat).((eq A (AHead a1 a2) (ASort O n)) \to ((eq A a1 b) \to (ex2_3 C T nat
47 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus n0 j) O d
48 c0)))) (\lambda (d: C).(\lambda (u: T).(\lambda (_: nat).(arity g d u (asucc
49 g b))))))))) (\lambda (H4: (eq A (AHead a1 a2) (ASort O n))).(let H5 \def
50 (eq_ind A (AHead a1 a2) (\lambda (e: A).(match e in A return (\lambda (_:
51 A).Prop) with [(ASort _ _) \Rightarrow False | (AHead _ _) \Rightarrow
52 True])) I (ASort O n) H4) in (False_ind ((eq A a1 b) \to (ex2_3 C T nat
53 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus O j) O d c0))))
54 (\lambda (d: C).(\lambda (u: T).(\lambda (_: nat).(arity g d u (asucc g
55 b))))))) H5))) i H1 H2 H3)))) | (aprem_succ a2 a0 i0 H1 a1) \Rightarrow
56 (\lambda (H2: (eq nat (S i0) i)).(\lambda (H3: (eq A (AHead a1 a2) (ASort O
57 n))).(\lambda (H4: (eq A a0 b)).(eq_ind nat (S i0) (\lambda (n0: nat).((eq A
58 (AHead a1 a2) (ASort O n)) \to ((eq A a0 b) \to ((aprem i0 a2 a0) \to (ex2_3
59 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus n0 j) O
60 d c0)))) (\lambda (d: C).(\lambda (u: T).(\lambda (_: nat).(arity g d u
61 (asucc g b)))))))))) (\lambda (H5: (eq A (AHead a1 a2) (ASort O n))).(let H6
62 \def (eq_ind A (AHead a1 a2) (\lambda (e: A).(match e in A return (\lambda
63 (_: A).Prop) with [(ASort _ _) \Rightarrow False | (AHead _ _) \Rightarrow
64 True])) I (ASort O n) H5) in (False_ind ((eq A a0 b) \to ((aprem i0 a2 a0)
65 \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop
66 (plus (S i0) j) O d c0)))) (\lambda (d: C).(\lambda (u: T).(\lambda (_:
67 nat).(arity g d u (asucc g b)))))))) H6))) i H2 H3 H4 H1))))]) in (H1
68 (refl_equal nat i) (refl_equal A (ASort O n)) (refl_equal A b))))))))
69 (\lambda (c0: C).(\lambda (d: C).(\lambda (u: T).(\lambda (i: nat).(\lambda
70 (H0: (getl i c0 (CHead d (Bind Abbr) u))).(\lambda (a0: A).(\lambda (_:
71 (arity g d u a0)).(\lambda (H2: ((\forall (i0: nat).(\forall (b: A).((aprem
72 i0 a0 b) \to (ex2_3 C T nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j:
73 nat).(drop (plus i0 j) O d0 d)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda
74 (_: nat).(arity g d0 u0 (asucc g b))))))))))).(\lambda (i0: nat).(\lambda (b:
75 A).(\lambda (H3: (aprem i0 a0 b)).(let H_x \def (H2 i0 b H3) in (let H4 \def
76 H_x in (ex2_3_ind C T nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j:
77 nat).(drop (plus i0 j) O d0 d)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda
78 (_: nat).(arity g d0 u0 (asucc g b))))) (ex2_3 C T nat (\lambda (d0:
79 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i0 j) O d0 c0)))) (\lambda
80 (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0 (asucc g b))))))
81 (\lambda (x0: C).(\lambda (x1: T).(\lambda (x2: nat).(\lambda (H5: (drop
82 (plus i0 x2) O x0 d)).(\lambda (H6: (arity g x0 x1 (asucc g b))).(let H_x0
83 \def (getl_drop_conf_rev (plus i0 x2) x0 d H5 Abbr c0 u i H0) in (let H7 \def
84 H_x0 in (ex2_ind C (\lambda (c1: C).(drop (plus i0 x2) O c1 c0)) (\lambda
85 (c1: C).(drop (S i) (plus i0 x2) c1 x0)) (ex2_3 C T nat (\lambda (d0:
86 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i0 j) O d0 c0)))) (\lambda
87 (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0 (asucc g b))))))
88 (\lambda (x: C).(\lambda (H8: (drop (plus i0 x2) O x c0)).(\lambda (H9: (drop
89 (S i) (plus i0 x2) x x0)).(ex2_3_intro C T nat (\lambda (d0: C).(\lambda (_:
90 T).(\lambda (j: nat).(drop (plus i0 j) O d0 c0)))) (\lambda (d0: C).(\lambda
91 (u0: T).(\lambda (_: nat).(arity g d0 u0 (asucc g b))))) x (lift (S i) (plus
92 i0 x2) x1) x2 H8 (arity_lift g x0 x1 (asucc g b) H6 x (S i) (plus i0 x2)
93 H9))))) H7)))))))) H4)))))))))))))) (\lambda (c0: C).(\lambda (d: C).(\lambda
94 (u: T).(\lambda (i: nat).(\lambda (H0: (getl i c0 (CHead d (Bind Abst)
95 u))).(\lambda (a0: A).(\lambda (_: (arity g d u (asucc g a0))).(\lambda (H2:
96 ((\forall (i0: nat).(\forall (b: A).((aprem i0 (asucc g a0) b) \to (ex2_3 C T
97 nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i0 j) O d0
98 d)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0
99 (asucc g b))))))))))).(\lambda (i0: nat).(\lambda (b: A).(\lambda (H3: (aprem
100 i0 a0 b)).(let H4 \def (H2 i0 b (aprem_asucc g a0 b i0 H3)) in (ex2_3_ind C T
101 nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i0 j) O d0
102 d)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0
103 (asucc g b))))) (ex2_3 C T nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j:
104 nat).(drop (plus i0 j) O d0 c0)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda
105 (_: nat).(arity g d0 u0 (asucc g b)))))) (\lambda (x0: C).(\lambda (x1:
106 T).(\lambda (x2: nat).(\lambda (H5: (drop (plus i0 x2) O x0 d)).(\lambda (H6:
107 (arity g x0 x1 (asucc g b))).(let H_x \def (getl_drop_conf_rev (plus i0 x2)
108 x0 d H5 Abst c0 u i H0) in (let H7 \def H_x in (ex2_ind C (\lambda (c1:
109 C).(drop (plus i0 x2) O c1 c0)) (\lambda (c1: C).(drop (S i) (plus i0 x2) c1
110 x0)) (ex2_3 C T nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j: nat).(drop
111 (plus i0 j) O d0 c0)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda (_:
112 nat).(arity g d0 u0 (asucc g b)))))) (\lambda (x: C).(\lambda (H8: (drop
113 (plus i0 x2) O x c0)).(\lambda (H9: (drop (S i) (plus i0 x2) x
114 x0)).(ex2_3_intro C T nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j:
115 nat).(drop (plus i0 j) O d0 c0)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda
116 (_: nat).(arity g d0 u0 (asucc g b))))) x (lift (S i) (plus i0 x2) x1) x2 H8
117 (arity_lift g x0 x1 (asucc g b) H6 x (S i) (plus i0 x2) H9))))) H7))))))))
118 H4))))))))))))) (\lambda (b: B).(\lambda (_: (not (eq B b Abst))).(\lambda
119 (c0: C).(\lambda (u: T).(\lambda (a1: A).(\lambda (_: (arity g c0 u
120 a1)).(\lambda (_: ((\forall (i: nat).(\forall (b0: A).((aprem i a1 b0) \to
121 (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus
122 i j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d
123 u0 (asucc g b0))))))))))).(\lambda (t0: T).(\lambda (a2: A).(\lambda (_:
124 (arity g (CHead c0 (Bind b) u) t0 a2)).(\lambda (H4: ((\forall (i:
125 nat).(\forall (b0: A).((aprem i a2 b0) \to (ex2_3 C T nat (\lambda (d:
126 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d (CHead c0 (Bind b)
127 u))))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0
128 (asucc g b0))))))))))).(\lambda (i: nat).(\lambda (b0: A).(\lambda (H5:
129 (aprem i a2 b0)).(let H_x \def (H4 i b0 H5) in (let H6 \def H_x in (ex2_3_ind
130 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O
131 d (CHead c0 (Bind b) u))))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_:
132 nat).(arity g d u0 (asucc g b0))))) (ex2_3 C T nat (\lambda (d: C).(\lambda
133 (_: T).(\lambda (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda
134 (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b0)))))) (\lambda (x0:
135 C).(\lambda (x1: T).(\lambda (x2: nat).(\lambda (H7: (drop (plus i x2) O x0
136 (CHead c0 (Bind b) u))).(\lambda (H8: (arity g x0 x1 (asucc g b0))).(let H9
137 \def (eq_ind nat (S (plus i x2)) (\lambda (n: nat).(drop n O x0 c0)) (drop_S
138 b x0 c0 u (plus i x2) H7) (plus i (S x2)) (plus_n_Sm i x2)) in (ex2_3_intro C
139 T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d
140 c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0
141 (asucc g b0))))) x0 x1 (S x2) H9 H8))))))) H6))))))))))))))))) (\lambda (c0:
142 C).(\lambda (u: T).(\lambda (a1: A).(\lambda (H0: (arity g c0 u (asucc g
143 a1))).(\lambda (_: ((\forall (i: nat).(\forall (b: A).((aprem i (asucc g a1)
144 b) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop
145 (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_:
146 nat).(arity g d u0 (asucc g b))))))))))).(\lambda (t0: T).(\lambda (a2:
147 A).(\lambda (_: (arity g (CHead c0 (Bind Abst) u) t0 a2)).(\lambda (H3:
148 ((\forall (i: nat).(\forall (b: A).((aprem i a2 b) \to (ex2_3 C T nat
149 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d (CHead
150 c0 (Bind Abst) u))))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_:
151 nat).(arity g d u0 (asucc g b))))))))))).(\lambda (i: nat).(\lambda (b:
152 A).(\lambda (H4: (aprem i (AHead a1 a2) b)).((match i in nat return (\lambda
153 (n: nat).((aprem n (AHead a1 a2) b) \to (ex2_3 C T nat (\lambda (d:
154 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus n j) O d c0)))) (\lambda (d:
155 C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b)))))))) with
156 [O \Rightarrow (\lambda (H5: (aprem O (AHead a1 a2) b)).(let H6 \def (match
157 H5 in aprem return (\lambda (n: nat).(\lambda (a0: A).(\lambda (a3:
158 A).(\lambda (_: (aprem n a0 a3)).((eq nat n O) \to ((eq A a0 (AHead a1 a2))
159 \to ((eq A a3 b) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda
160 (j: nat).(drop (plus O j) O d c0)))) (\lambda (d: C).(\lambda (u0:
161 T).(\lambda (_: nat).(arity g d u0 (asucc g b))))))))))))) with [(aprem_zero
162 a0 a3) \Rightarrow (\lambda (_: (eq nat O O)).(\lambda (H7: (eq A (AHead a0
163 a3) (AHead a1 a2))).(\lambda (H8: (eq A a0 b)).((let H9 \def (f_equal A A
164 (\lambda (e: A).(match e in A return (\lambda (_: A).A) with [(ASort _ _)
165 \Rightarrow a3 | (AHead _ a4) \Rightarrow a4])) (AHead a0 a3) (AHead a1 a2)
166 H7) in ((let H10 \def (f_equal A A (\lambda (e: A).(match e in A return
167 (\lambda (_: A).A) with [(ASort _ _) \Rightarrow a0 | (AHead a4 _)
168 \Rightarrow a4])) (AHead a0 a3) (AHead a1 a2) H7) in (eq_ind A a1 (\lambda
169 (a4: A).((eq A a3 a2) \to ((eq A a4 b) \to (ex2_3 C T nat (\lambda (d:
170 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus O j) O d c0)))) (\lambda (d:
171 C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b)))))))))
172 (\lambda (H11: (eq A a3 a2)).(eq_ind A a2 (\lambda (_: A).((eq A a1 b) \to
173 (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus
174 O j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d
175 u0 (asucc g b)))))))) (\lambda (H12: (eq A a1 b)).(eq_ind A b (\lambda (_:
176 A).(ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop
177 (plus O j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_:
178 nat).(arity g d u0 (asucc g b))))))) (eq_ind A a1 (\lambda (a4: A).(ex2_3 C T
179 nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus O j) O d
180 c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0
181 (asucc g a4))))))) (ex2_3_intro C T nat (\lambda (d: C).(\lambda (_:
182 T).(\lambda (j: nat).(drop (plus O j) O d c0)))) (\lambda (d: C).(\lambda
183 (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g a1))))) c0 u O (drop_refl
184 c0) H0) b H12) a1 (sym_eq A a1 b H12))) a3 (sym_eq A a3 a2 H11))) a0 (sym_eq
185 A a0 a1 H10))) H9)) H8)))) | (aprem_succ a0 a3 i0 H6 a4) \Rightarrow (\lambda
186 (H7: (eq nat (S i0) O)).(\lambda (H8: (eq A (AHead a4 a0) (AHead a1
187 a2))).(\lambda (H9: (eq A a3 b)).((let H10 \def (eq_ind nat (S i0) (\lambda
188 (e: nat).(match e in nat return (\lambda (_: nat).Prop) with [O \Rightarrow
189 False | (S _) \Rightarrow True])) I O H7) in (False_ind ((eq A (AHead a4 a0)
190 (AHead a1 a2)) \to ((eq A a3 b) \to ((aprem i0 a0 a3) \to (ex2_3 C T nat
191 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus O j) O d c0))))
192 (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g
193 b))))))))) H10)) H8 H9 H6))))]) in (H6 (refl_equal nat O) (refl_equal A
194 (AHead a1 a2)) (refl_equal A b)))) | (S n) \Rightarrow (\lambda (H5: (aprem
195 (S n) (AHead a1 a2) b)).(let H6 \def (match H5 in aprem return (\lambda (n0:
196 nat).(\lambda (a0: A).(\lambda (a3: A).(\lambda (_: (aprem n0 a0 a3)).((eq
197 nat n0 (S n)) \to ((eq A a0 (AHead a1 a2)) \to ((eq A a3 b) \to (ex2_3 C T
198 nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus (S n) j) O
199 d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0
200 (asucc g b))))))))))))) with [(aprem_zero a0 a3) \Rightarrow (\lambda (H6:
201 (eq nat O (S n))).(\lambda (H7: (eq A (AHead a0 a3) (AHead a1 a2))).(\lambda
202 (H8: (eq A a0 b)).((let H9 \def (eq_ind nat O (\lambda (e: nat).(match e in
203 nat return (\lambda (_: nat).Prop) with [O \Rightarrow True | (S _)
204 \Rightarrow False])) I (S n) H6) in (False_ind ((eq A (AHead a0 a3) (AHead a1
205 a2)) \to ((eq A a0 b) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_:
206 T).(\lambda (j: nat).(drop (plus (S n) j) O d c0)))) (\lambda (d: C).(\lambda
207 (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b)))))))) H9)) H7 H8)))) |
208 (aprem_succ a0 a3 i0 H6 a4) \Rightarrow (\lambda (H7: (eq nat (S i0) (S
209 n))).(\lambda (H8: (eq A (AHead a4 a0) (AHead a1 a2))).(\lambda (H9: (eq A a3
210 b)).((let H10 \def (f_equal nat nat (\lambda (e: nat).(match e in nat return
211 (\lambda (_: nat).nat) with [O \Rightarrow i0 | (S n0) \Rightarrow n0])) (S
212 i0) (S n) H7) in (eq_ind nat n (\lambda (n0: nat).((eq A (AHead a4 a0) (AHead
213 a1 a2)) \to ((eq A a3 b) \to ((aprem n0 a0 a3) \to (ex2_3 C T nat (\lambda
214 (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus (S n) j) O d c0))))
215 (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g
216 b)))))))))) (\lambda (H11: (eq A (AHead a4 a0) (AHead a1 a2))).(let H12 \def
217 (f_equal A A (\lambda (e: A).(match e in A return (\lambda (_: A).A) with
218 [(ASort _ _) \Rightarrow a0 | (AHead _ a5) \Rightarrow a5])) (AHead a4 a0)
219 (AHead a1 a2) H11) in ((let H13 \def (f_equal A A (\lambda (e: A).(match e in
220 A return (\lambda (_: A).A) with [(ASort _ _) \Rightarrow a4 | (AHead a5 _)
221 \Rightarrow a5])) (AHead a4 a0) (AHead a1 a2) H11) in (eq_ind A a1 (\lambda
222 (_: A).((eq A a0 a2) \to ((eq A a3 b) \to ((aprem n a0 a3) \to (ex2_3 C T nat
223 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus (S n) j) O d
224 c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0
225 (asucc g b)))))))))) (\lambda (H14: (eq A a0 a2)).(eq_ind A a2 (\lambda (a5:
226 A).((eq A a3 b) \to ((aprem n a5 a3) \to (ex2_3 C T nat (\lambda (d:
227 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus (S n) j) O d c0)))) (\lambda
228 (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b)))))))))
229 (\lambda (H15: (eq A a3 b)).(eq_ind A b (\lambda (a5: A).((aprem n a2 a5) \to
230 (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus
231 (S n) j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity
232 g d u0 (asucc g b)))))))) (\lambda (H16: (aprem n a2 b)).(let H_x \def (H3 n
233 b H16) in (let H17 \def H_x in (ex2_3_ind C T nat (\lambda (d: C).(\lambda
234 (_: T).(\lambda (j: nat).(drop (plus n j) O d (CHead c0 (Bind Abst) u)))))
235 (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g
236 b))))) (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop
237 (plus (S n) j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_:
238 nat).(arity g d u0 (asucc g b)))))) (\lambda (x0: C).(\lambda (x1:
239 T).(\lambda (x2: nat).(\lambda (H18: (drop (plus n x2) O x0 (CHead c0 (Bind
240 Abst) u))).(\lambda (H19: (arity g x0 x1 (asucc g b))).(ex2_3_intro C T nat
241 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus (S n) j) O d
242 c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0
243 (asucc g b))))) x0 x1 x2 (drop_S Abst x0 c0 u (plus n x2) H18) H19))))))
244 H17)))) a3 (sym_eq A a3 b H15))) a0 (sym_eq A a0 a2 H14))) a4 (sym_eq A a4 a1
245 H13))) H12))) i0 (sym_eq nat i0 n H10))) H8 H9 H6))))]) in (H6 (refl_equal
246 nat (S n)) (refl_equal A (AHead a1 a2)) (refl_equal A b))))]) H4)))))))))))))
247 (\lambda (c0: C).(\lambda (u: T).(\lambda (a1: A).(\lambda (_: (arity g c0 u
248 a1)).(\lambda (_: ((\forall (i: nat).(\forall (b: A).((aprem i a1 b) \to
249 (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus
250 i j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d
251 u0 (asucc g b))))))))))).(\lambda (t0: T).(\lambda (a2: A).(\lambda (_:
252 (arity g c0 t0 (AHead a1 a2))).(\lambda (H3: ((\forall (i: nat).(\forall (b:
253 A).((aprem i (AHead a1 a2) b) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_:
254 T).(\lambda (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda
255 (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b))))))))))).(\lambda (i:
256 nat).(\lambda (b: A).(\lambda (H4: (aprem i a2 b)).(let H5 \def (H3 (S i) b
257 (aprem_succ a2 b i H4 a1)) in (ex2_3_ind C T nat (\lambda (d: C).(\lambda (_:
258 T).(\lambda (j: nat).(drop (S (plus i j)) O d c0)))) (\lambda (d: C).(\lambda
259 (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b))))) (ex2_3 C T nat
260 (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d c0))))
261 (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g
262 b)))))) (\lambda (x0: C).(\lambda (x1: T).(\lambda (x2: nat).(\lambda (H6:
263 (drop (S (plus i x2)) O x0 c0)).(\lambda (H7: (arity g x0 x1 (asucc g
264 b))).(C_ind (\lambda (c1: C).((drop (S (plus i x2)) O c1 c0) \to ((arity g c1
265 x1 (asucc g b)) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda
266 (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u0:
267 T).(\lambda (_: nat).(arity g d u0 (asucc g b))))))))) (\lambda (n:
268 nat).(\lambda (H8: (drop (S (plus i x2)) O (CSort n) c0)).(\lambda (_: (arity
269 g (CSort n) x1 (asucc g b))).(and3_ind (eq C c0 (CSort n)) (eq nat (S (plus i
270 x2)) O) (eq nat O O) (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda
271 (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u0:
272 T).(\lambda (_: nat).(arity g d u0 (asucc g b)))))) (\lambda (_: (eq C c0
273 (CSort n))).(\lambda (H11: (eq nat (S (plus i x2)) O)).(\lambda (_: (eq nat O
274 O)).(let H13 \def (eq_ind nat (S (plus i x2)) (\lambda (ee: nat).(match ee in
275 nat return (\lambda (_: nat).Prop) with [O \Rightarrow False | (S _)
276 \Rightarrow True])) I O H11) in (False_ind (ex2_3 C T nat (\lambda (d:
277 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d c0)))) (\lambda (d:
278 C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b)))))) H13)))))
279 (drop_gen_sort n (S (plus i x2)) O c0 H8))))) (\lambda (d: C).(\lambda (IHd:
280 (((drop (S (plus i x2)) O d c0) \to ((arity g d x1 (asucc g b)) \to (ex2_3 C
281 T nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O
282 d0 c0)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0
283 (asucc g b)))))))))).(\lambda (k: K).(\lambda (t1: T).(\lambda (H8: (drop (S
284 (plus i x2)) O (CHead d k t1) c0)).(\lambda (H9: (arity g (CHead d k t1) x1
285 (asucc g b))).((match k in K return (\lambda (k0: K).((arity g (CHead d k0
286 t1) x1 (asucc g b)) \to ((drop (r k0 (plus i x2)) O d c0) \to (ex2_3 C T nat
287 (\lambda (d0: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d0
288 c0)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0
289 (asucc g b))))))))) with [(Bind b0) \Rightarrow (\lambda (H10: (arity g
290 (CHead d (Bind b0) t1) x1 (asucc g b))).(\lambda (H11: (drop (r (Bind b0)
291 (plus i x2)) O d c0)).(ex2_3_intro C T nat (\lambda (d0: C).(\lambda (_:
292 T).(\lambda (j: nat).(drop (plus i j) O d0 c0)))) (\lambda (d0: C).(\lambda
293 (u0: T).(\lambda (_: nat).(arity g d0 u0 (asucc g b))))) (CHead d (Bind b0)
294 t1) x1 (S x2) (eq_ind nat (S (plus i x2)) (\lambda (n: nat).(drop n O (CHead
295 d (Bind b0) t1) c0)) (drop_drop (Bind b0) (plus i x2) d c0 H11 t1) (plus i (S
296 x2)) (plus_n_Sm i x2)) H10))) | (Flat f) \Rightarrow (\lambda (H10: (arity g
297 (CHead d (Flat f) t1) x1 (asucc g b))).(\lambda (H11: (drop (r (Flat f) (plus
298 i x2)) O d c0)).(let H12 \def (IHd H11 (arity_cimp_conf g (CHead d (Flat f)
299 t1) x1 (asucc g b) H10 d (cimp_flat_sx f d t1))) in (ex2_3_ind C T nat
300 (\lambda (d0: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d0
301 c0)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0
302 (asucc g b))))) (ex2_3 C T nat (\lambda (d0: C).(\lambda (_: T).(\lambda (j:
303 nat).(drop (plus i j) O d0 c0)))) (\lambda (d0: C).(\lambda (u0: T).(\lambda
304 (_: nat).(arity g d0 u0 (asucc g b)))))) (\lambda (x3: C).(\lambda (x4:
305 T).(\lambda (x5: nat).(\lambda (H13: (drop (plus i x5) O x3 c0)).(\lambda
306 (H14: (arity g x3 x4 (asucc g b))).(ex2_3_intro C T nat (\lambda (d0:
307 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d0 c0)))) (\lambda
308 (d0: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d0 u0 (asucc g b))))) x3
309 x4 x5 H13 H14)))))) H12))))]) H9 (drop_gen_drop k d c0 t1 (plus i x2)
310 H8)))))))) x0 H6 H7)))))) H5)))))))))))))) (\lambda (c0: C).(\lambda (u:
311 T).(\lambda (a0: A).(\lambda (_: (arity g c0 u (asucc g a0))).(\lambda (_:
312 ((\forall (i: nat).(\forall (b: A).((aprem i (asucc g a0) b) \to (ex2_3 C T
313 nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d
314 c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0
315 (asucc g b))))))))))).(\lambda (t0: T).(\lambda (_: (arity g c0 t0
316 a0)).(\lambda (H3: ((\forall (i: nat).(\forall (b: A).((aprem i a0 b) \to
317 (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus
318 i j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d
319 u0 (asucc g b))))))))))).(\lambda (i: nat).(\lambda (b: A).(\lambda (H4:
320 (aprem i a0 b)).(let H_x \def (H3 i b H4) in (let H5 \def H_x in (ex2_3_ind C
321 T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d
322 c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda (_: nat).(arity g d u0
323 (asucc g b))))) (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j:
324 nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u0: T).(\lambda
325 (_: nat).(arity g d u0 (asucc g b)))))) (\lambda (x0: C).(\lambda (x1:
326 T).(\lambda (x2: nat).(\lambda (H6: (drop (plus i x2) O x0 c0)).(\lambda (H7:
327 (arity g x0 x1 (asucc g b))).(ex2_3_intro C T nat (\lambda (d: C).(\lambda
328 (_: T).(\lambda (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda
329 (u0: T).(\lambda (_: nat).(arity g d u0 (asucc g b))))) x0 x1 x2 H6 H7))))))
330 H5)))))))))))))) (\lambda (c0: C).(\lambda (t0: T).(\lambda (a1: A).(\lambda
331 (_: (arity g c0 t0 a1)).(\lambda (H1: ((\forall (i: nat).(\forall (b:
332 A).((aprem i a1 b) \to (ex2_3 C T nat (\lambda (d: C).(\lambda (_:
333 T).(\lambda (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u:
334 T).(\lambda (_: nat).(arity g d u (asucc g b))))))))))).(\lambda (a2:
335 A).(\lambda (H2: (leq g a1 a2)).(\lambda (i: nat).(\lambda (b: A).(\lambda
336 (H3: (aprem i a2 b)).(let H_x \def (aprem_repl g a1 a2 H2 i b H3) in (let H4
337 \def H_x in (ex2_ind A (\lambda (b1: A).(leq g b1 b)) (\lambda (b1: A).(aprem
338 i a1 b1)) (ex2_3 C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j:
339 nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u: T).(\lambda (_:
340 nat).(arity g d u (asucc g b)))))) (\lambda (x: A).(\lambda (H5: (leq g x
341 b)).(\lambda (H6: (aprem i a1 x)).(let H_x0 \def (H1 i x H6) in (let H7 \def
342 H_x0 in (ex2_3_ind C T nat (\lambda (d: C).(\lambda (_: T).(\lambda (j:
343 nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u: T).(\lambda (_:
344 nat).(arity g d u (asucc g x))))) (ex2_3 C T nat (\lambda (d: C).(\lambda (_:
345 T).(\lambda (j: nat).(drop (plus i j) O d c0)))) (\lambda (d: C).(\lambda (u:
346 T).(\lambda (_: nat).(arity g d u (asucc g b)))))) (\lambda (x0: C).(\lambda
347 (x1: T).(\lambda (x2: nat).(\lambda (H8: (drop (plus i x2) O x0 c0)).(\lambda
348 (H9: (arity g x0 x1 (asucc g x))).(ex2_3_intro C T nat (\lambda (d:
349 C).(\lambda (_: T).(\lambda (j: nat).(drop (plus i j) O d c0)))) (\lambda (d:
350 C).(\lambda (u: T).(\lambda (_: nat).(arity g d u (asucc g b))))) x0 x1 x2 H8
351 (arity_repl g x0 x1 (asucc g x) H9 (asucc g b) (asucc_repl g x b H5))))))))
352 H7)))))) H4))))))))))))) c t a H))))).