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At:
kleene minimize is fp1111 1. n :
2. n1:. n1<n (f:{f:()| x:. f(x) }. mu(f) = n1f(mu(f)))
3. f : {f:()| x:. f(x) }
4. mu(f) = n 5. f(0)
6. (x.f(1+x)) {f:()| x:. f(x) }
mu(x.f(1+x))<n