Nuprl Lemma : set_leq_weakening_eq 13,42

s:QOSet, a, b:|s|. (a = b)  (a  b) 
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Upsets 1
Definitions of StatementDSet, QOSet
Definitions, t  T, P  Q, x:A. B(x), DSet, QOSet
Lemmasqoset wf, set car wf, set leq wf, qoset refl

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