Nuprl Lemma : same-thread_inversion 11,40

es:ES, p:(E(E + Top)), ee':E.
causal-predecessor(es;p same-thread(es;p;e;e' same-thread(es;p;e';e
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Definitionscausal-predecessor(es;p), x:AB(x), E, left + right, Top, t  T, ES, x:AB(x), P  Q, same-thread(es;p;e;e')
Lemmascausal-pred-wellfounded, event system wf, top wf, es-E wf, causal-predecessor wf, same-thread wf

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