Nuprl Lemma : es-locl_transitivity1 11,40

es:event_system{i:l}, a,b,c:es-E(es).
es-le(es; a; b)  es-locl(es; b; c)  es-locl(es; a; c) 
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Definitionsleft + right, P  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, s = t, prop{i:l}, sqequal(s; t), guard(T), sq_type(T), let x,y = A in B(x;y), t.1
Lemmases-locl transitivity, es-locl wf, es-le wf, es-E wf, event system wf

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