Nuprl Lemma : sublist_transitivity 11,40

T:Type, L1,L2,L3:(T List). sublist(T; L1; L2)  sublist(T; L2; L3)  sublist(T; L1; L3) 
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Definitionst  T, compose(f; g), suptype(S; T), subtype(S; T), x:A. B(x), , int_seg(i; j), P  Q
Lemmasint seg wf, non neg length, length wf1, compose increasing

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