Nuprl Lemma : rps_wf 11,40

x,y:int_seg(0; 3). rps(x; y)   
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Definitionsrps(x; y), bor(p; q), band(p; q), (i = j), x:AB(x), {x:A| B(x)} , int_seg(i; j), x:A. B(x), t  T, #$n
Lemmasint seg wf, eq int wf, band wf, bor wf

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