Nuprl Lemma : complete_nat_ind 13,42

P:({k}). (i:. (j:iP(j))  P(i))  (i:P(i)) 
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Upint 1, int 1
Definitionst  T, x(s), P  Q, , , x:AB(x), False, A, A  B, i  j , P & Q, i  j < k, {i..j}
Lemmasle wf, int seg wf, nat wf, nat properties, ge wf

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