Nuprl Lemma : compat-cons 11,40

T:Type, as,bs:(T List), a,b:T.
compat(T; cons(aas); cons(bbs))  ((a = b compat(Tasbs)) 
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Definitionst  T, x:AB(x), compat(Tl1l2), prop{i:l}, P  Q, P  Q, P  Q, P  Q, P  Q, iseg(Tl1l2), guard(T)
Lemmasiseg wf, cons iseg, compat wf

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