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Let $R$ be a commutative ring with non-zero unity and let $T$ be the total ring of fractions of $R$. Every subring of $T$ containing $R$ is an {\em overring} of $R$.
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Let $R$ be a commutative ring with non-zero unity and let $T$ the total ring of fractions of $R$. Every subring of $T$ containing $R$ is an {\em overring} of $R$.
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