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Step * of Lemma gcd_sym

∀a,b:ℤ.  (gcd(a;b) ~ gcd(b;a))
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1
1. a : ℤ
2. b : ℤ
⊢ gcd(a;b) ~ gcd(b;a)

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Latex:

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Latex:
\mforall{}a,b:\mBbbZ{}.    (gcd(a;b)  \msim{}  gcd(b;a))


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Latex:
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