At: auto2 lemma 6 1 1 1 1 1 2 1 1 1 1 1 1 1 2 2 1 1 1 1 1 1 1 2
1. n: 
2. 0 < n
3. T: Type
4. R: T
Prop
5. f:
n
T
6. Inj(
n; T; f)
7.
t:T. Dec(R(t))
8. b: T
9.
b = f(n-1)
10. a:
n
11. f(a) = b
f(a) = b
{t:T|
t = f(n-1) }
By:
Analyze
THEN
Try Auto
Generated subgoal:1 | f(a) = f(n-1) |
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