Nuprl Lemma : assert_of_eq_bool 12,41

p, q:. (p =b q)  (p = q) 
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ProofTree


Definitionst  T, x:A. B(x), p =b q, , P  Q, P  Q, P & Q, True, ff, if b then t else f fi , tt, b, p  q, p q, b, P  Q, False, Unit, , A,
Lemmasbool wf, bfalse wf, false wf, btrue wf, true wf, btrue neq bfalse

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