At: prod fin is fin 1 2 6 2 1 1 1 2
1. T: Type
2. t: T
3. n: 
4. f: n
T
5. Inj(n; T; f)
6. 
b:T. 
a:n. f(a) = b
7. n > 0
8. b1: T
9. b2: T
10. a: n
11. f(a) = b1
12. a1: n
13. f(a1) = b2
a
n+a1 < nn
By: Assert (an
(n-1)n)
Generated subgoals:| 1 | an(n-1)n |
| 2 | 14. an(n-1)n
an+a1 < nn |
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