Nuprl Lemma : sq_stable__bilinear_p 13,42

A, B, C:Type, +a:(AAA), +b:(BBB), +c:(CCC), f:(ABC).
SqStable(IsBilinear(A;B;C;+a;+b;+c;f)) 
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Upgen algebra 1
Definitions of StatementIsBilinear(A;B;C;+a;+b;+c;f)
Definitionsx. t(x), t  T, , x f y, IsBilinear(A;B;C;+a;+b;+c;f), x:A. B(x), x(s), P  Q
Lemmassq stable equal, sq stable all, sq stable and

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