Nuprl Lemma : causal_order_monotonic 4,23

T:Type, L:T List, PQ1Q2:(||L||Prop), R:(||L||||L||Prop).
(i:||L||. Q2(i Q1(i))  causal_order(L;R;P;Q1 causal_order(L;R;P;Q2
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Definitionst  T, Prop, x:AB(x), ||as||, {i..j}, P  Q, AB, P & Q, x:AB(x), False, A, i  j < k, causal_order(L;R;P;Q)
Lemmasle wf, int seg wf, length wf1

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