Nuprl Lemma : es-le-trans3 11,40

es:event_system{i:l}, a,b,c:es-E(es).
es-locl(es; a; b)  es-le(es; b; c)  es-locl(es; a; c) 
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DefinitionsP  Q, es-le(es; e; e'), event_system{i:l}, t  T, x:A. B(x), es-E(es), es-locl(es; e; e'), P  Q, trans(T; x,y.E(x;y))
Lemmases-locl-trans, es-le wf, es-locl wf, es-E wf, event system wf

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