Nuprl Lemma : divisor_bound 2,24

a:, b:. a | b  ab 
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DefinitionsP  Q, b | a, x:A. B(x), , t  T, , x:A. B(x), AB, ij, P  Q, A, False
Lemmasmul preserves le, nat wf, nat plus wf, divides wf

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