Nuprl Lemma : sq_stable__inject 12,41

A, B:Type, f:(AB). SqStable(Inj(A;B;f)) 
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Definitionsx. t(x), t  T, , P  Q, Inj(A;B;f), x:A. B(x), x(s)
Lemmassq stable equal, sq stable all

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