Nuprl Lemma : int_lower_ind 13,42

i:E:({...i}{u}). E(i (k:{...i - 1}. E(k+1)  E(k))  {k:{...i}. E(k)} 
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Upint 2, int 2
DefinitionsFalse, A, A  B, t  T, {T}, x(s), P  Q, , {...i}, x:AB(x), xt(x), i > j, P & Q, P  Q, P  Q, WellFnd{i}(A;x,y.R(x;y)), P  Q, Dec(P)
Lemmasle wf, int lower wf, int lower well founded, gt wf, decidable int equal

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