Nuprl - Proof: f91-val 1 1 1 1 2 1

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At: f91-val 1 1 1 1 2 1

1. d:
2. d1:. d1 < d (i:. if 101 < i 0 else 101-i fi = d1 (f91(i) ~ if 101 < i i-10 else 91 fi))
3. i:
4. i101
5. i100
6. 101-i = d
7. f91(i+11) ~ if 101 < i+11 i+11-10 else 91 fi
8. 101 < i+11
9. f91(i+1) ~ if 101 < i+1 i+1-10 else 91 fi

f91(i+11-10) ~ f91(i+1)

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