Nuprl Lemma : gcd_of_triple 2,24

abcxy:.
GCD(a;b;x GCD(x;c;y y | a & y | b & y | c & (z:z | a  z | b  z | c  z | y
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DefinitionsGCD(a;b;y), P  Q, P & Q, Prop, b | a, x:AB(x), t  T
Lemmasdivides transitivity, divides wf

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