Nuprl Lemma : interleaving_sublist 11,40

T:Type, L, L1, L2:(T List). interleaving(T;L1;L2;L)  L1  L 
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Definitionssuptype(S; T), S  T, , t  T, x:A. B(x), disjoint_sublists(T;L1;L2;L), P & Q, L1  L2, interleaving(T;L1;L2;L), P  Q, x:A. B(x), {i..j}
Lemmasnot wf, nat wf, select wf, non neg length, length wf1, increasing wf, int seg wf

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