Nuprl Lemma : assert-es-ble 11,40

es:event_system{i:l}, e,e':es-E(es). (es-ble{i:l}(es;e;e'))  es-le(esee'
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Definitionses-ble{i:l}(es;e;e'), s = t, P  Q, decidable es-le, event_system{i:l}, Type, es-E(es), prop{i:l}, x:AB(x), decidable(P), es-le(esee'), x:AB(x), t  T, f(a), P  Q, left + right, b, True, P  Q, P  Q, P  Q, A, False
Lemmasfalse wf, true wf, es-le wf, decidable wf, es-E wf, event system wf, decidable es-le

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