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## Definition: Co-prime Numbers

The integers $$a,b$$ are called co-prime (or relatively prime), if their greates common divisor i$$\gcd(a,b)=1$$, i.e. if $$1$$ is the only positive common divisor is equal $1$, i.e. $\gcd(a,b)=1.$

Coprimality is a relation $”\perp”$ defined on the set of integers $\perp\subseteq\mathbb Z\times\mathbb Z$ by
$a\perp b:\Leftrightarrow\gcd(a,b)=1.$

| | | | | created: 2019-03-10 19:28:25 | modified: 2019-03-10 19:33:59 | by: bookofproofs | references: [1272]

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