Nuprl Lemma : implies_functionality_wrt_implies 13,42

P1, P2, Q1, Q2:. {P1  P2}  {Q1  Q2}  {(P1  Q1)  P2  Q2} 
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Upcore 2, core 2
Definitionst  T, {T}, P  Q, , x:A. B(x), P  Q
Lemmasrev implies wf

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