Nuprl Lemma : alle-between1_wf 11,40

es:event_system{i:l}, e1,e2:es-E(es), P:({e:es-E(es)| loc(e) = loc(e1 Id} prop{i:l}).
(loc(e2) = loc(e1 Id)  (e[e1,e2).P(e prop{i:l}) 
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Definitionst  T, b, P  Q, False, A, x:AB(x), P  Q, es-locl(esee'), loc(e), Id, event_system{i:l}, es-E(es), prop{i:l}, x(s), es-le(esee'), e[e1,e2).P(e)
Lemmases-le wf, es-locl wf, es-E wf, event system wf, Id wf, es-loc wf, es-le-loc, es-loc-pred

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