Nuprl Lemma : assert_of_bimplies 13,42

pq:. ((p  q))  ((p (q)) 
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Upbool 1, bool 1
Definitions, P  Q, P & Q, True, t  T, tt, ff, if b then t else f fi , b, p q, P  Q, p  q, b, P  Q, x:AB(x), False, Unit, ,
Lemmasbool wf, false wf, true wf

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