Nuprl Lemma : ma-valtype-subtype 11,40

k:Knd, dada':a:Knd fp Type. da  da'  (Valtype(da';kr Valtype(da;k)) 
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Definitionsx:AB(x), P  Q, Valtype(da;k), t  T, xt(x), {T}, x(s),
Lemmassubtype-fpf-cap, Knd wf, Kind-deq wf, fpf-sub wf, fpf wf

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