Nuprl - Pf fun_enumer 1 2 1 2 2 1 2 1 1 2 1 1 1 1 2 1 1 1 1 1 2 1 1 1

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At: fun enumer 1 2 1 2 2 1 2 1 1 2 1 1 1 1 2 1 1 1 1 1 2 1 1 1

1. n:
2. m:
3. 0 < m
4. f: ((m-1)n)(nm-1)
5. n = 0
6. f1: n(nm-1)(nm)
7. b: (nm)
8. a: n(nm-1)
9. f1(a) = b (n(nm-1))
10. a@0: (m-1)n
11. f(a@0) = 2of(a)
12. m-1 = m-1

(z.if z=m-1 1of(a) else a@0(z) fi) = a@0

By: Ext

Generated subgoal:

1 13. x: (m-1)
(z.if z=m-1 1of(a) else a@0(z) fi)(x) = a@0(x)

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