Nuprl Lemma : st-key_wf 0,22

T:(IdType), tab:secret-table(T), n:||tab|| . key(tab;n +Atom1 
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DefinitionsType, t  T, Id, x:AB(x), x:AB(x), data(T), Atom$n, , left+right, x:AB(x), {x:AB(x) }, #$n, {i..j}, S  T, , x.A(x), xt(x), 1of(t), 2of(t), f(a), key(tab;n), ||tab|| , secret-table(T)
Lemmaspi2 wf, pi1 wf, int seg wf, nat wf, data wf, Id wf

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