Nuprl - Pf auto2_lemma_6 1 1 1 1 1 2 1 1 1 1 1 1 1 2 1 1 1

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At: auto2 lemma 6 1 1 1 1 1 2 1 1 1 1 1 1 1 2 1 1 1

1. n:
2. 0 < n
3. T: Type
4. R: TProp
5. f: nT
6. Bij(n; T; f)
7. t:T. Dec(R(t))
8. a1: (n-1)
9. a2: (n-1)
10. f(a1) = f(a2) {t:T| t = f(n-1) }

a1 = a2

By: Analyze 6

Generated subgoal:

1 6. Inj(n; T; f)
7. Surj(n; T; f)
8. t:T. Dec(R(t))
9. a1: (n-1)
10. a2: (n-1)
11. f(a1) = f(a2) {t:T| t = f(n-1) }
a1 = a2

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