Nuprl Lemma : ma-join-list-property 0,22

L:MsgA List. (A,BL.A ||+ B (L MsgA & (M:MsgA. (BLM ||+ B (M ||+ (L))) 
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Definitionsx:AB(x), t  T, P  Q, (x,yL.P(x;y)), A ||+ B, P & Q, (L), ||as||, reduce(f;k;as), Y, Prop, xt(x), AB, A, False, x,yt(x;y), {i..j}, x(s), i  j < k, P  Q, x(s1,s2), M1 || M2
Lemmasmsga wf, ma-empty wf, ma-empty-compatible-right, ma-empty-frame-compatible-right, l all wf, ma-compat wf, int seg wf, select wf, length wf2, pairwise-cons, ma-join wf, pairwise wf, l all cons, ma-compat-join

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