Nuprl Lemma : gcd_p_mul 2,24

abyn:. GCD(a;b;y GCD(na;nb;ny
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DefinitionsP  Q, P & Q, Prop, b | a, GCD(a;b;y), x:AB(x), t  T, x:AB(x), P  Q, P  Q, T, True
Lemmastrue wf, squash wf, divisor of sum, divisor of mul, assoced weakening, multiply functionality wrt assoced, divides functionality wrt assoced, gcd unique, bezout ident, divides mul, gcd p wf, divides wf

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