Nuprl Lemma : es-bc_wf 11,40

es:ES, ee':E. es-bc{i:l}(es;e;e'  
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Definitionsx:AB(x), t  T, es-bc{i:l}(es;e;e'), , P  Q, Dec(P), P  Q
Lemmasevent system wf, es-E wf, decidable wf, es-causl wf, btrue wf, bfalse wf

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