Nuprl Lemma : l_member_set 11,40

A:Type, P:(Aprop{i:l}), L:(A List), x:A. l_all(LAx.P(x))  guard(((x  L (x  L))) 
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Definitionsx(s), guard(T), xt(x), l_all(LTx.P(x)), (x  l), x:AB(x), l[i], ge(ij), A c B, subtype(ST), x:AB(x), , A  B, A, False, P  Q, ||as||, t  T, prop{i:l}
Lemmaslist-set-type2, select wf, length wf1, l all wf, l member wf

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