Nuprl Lemma : es-isrcv_wf 11,40

the_es:event_system{i:l}, e:es-E(the_es). es-isrcv(the_ese  
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Definitionsx:AB(x), es-E(es), t  T, es-isrcv(ese), t.1, es-kind(ese), es_info(es), t.2, event_system{i:l}
Lemmasisrcv wf, kind wf, event system wf

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