Nuprl Lemma : pair-inherence 0,22

AB:Type, x:Ay:Ba:Atom1.
AtomFree(Type;A AtomFree(Type;B (<x,y>:AB>>a  x:A>>a  y:B>>a
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Definitionsx:AB(x), P  Q, P  Q, P  Q, P & Q, P  Q, t  T, Prop, x:T>>a, {T}, x:AB(x), A, False
Lemmasinheres wf, atom-free wf, assert wf, matters wf

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