At: auto2 lemma 5 1 1 1 1 1 1 2 2 1 1 2 1 2 1 1 2
1. Alph: Type
2. n: 
3. n1: 
4. f:
n1
Alph
5. Bij(
n1; Alph; f)
6.
f:((
n

n1)

(n1
n)). Bij(
n

n1;
(n1
n); f)
7. f1: (
n

n1)

(n1
n)
8. g:
(n1
n)

n

n1
9. InvFuns(
n

n1;
(n1
n); f1; g)
10. b: Alph*
11. ||b|| = n
12. a:
(n1
n)
13. f o g(a) = (
z:
||b||. b[z])
n
Alph
14. ((f o g(a))[
||b||]) = b
15. a1:
(n1
n)
((f o g(a1))[
n])
{l:(Alph*)| ||l|| = n }
By: Analyze
Generated subgoals:None
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