At: prod fin is fin 1 2 6 2 1 1 1 3 1 1 1 1
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. a1: n
11. f(a1) = b2
12. 0
0
13. 0 < n
0 = ((0
n+a1) 
n)
By: Inst
Thm* a:, n:
. a < n 
(a n) = 0
[a1;n]
Generated subgoals:None
About:
