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Step * of Lemma better-gcd_wf

∀[x,y:ℤ].  (better-gcd(x;y) ∈ ℤ)
BY
{ (Auto THEN RWO "better-gcd-gcd" 0 THEN Auto) }

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Latex:

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Latex:
\mforall{}[x,y:\mBbbZ{}].    (better-gcd(x;y)  \mmember{}  \mBbbZ{})


By

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Latex:
(Auto  THEN  RWO  "better-gcd-gcd"  0  THEN  Auto)

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