39 Proof Suppose r and s are rational numbers If r s is rational 39 Proof Supposer and s are rational numbers If r s is rational, then by definition of rational r s a b for some integers a and b with b 0 Also sincer and s are rational, r i j and s m n for some integers i, j, m, and n with j 0 and n...

Since Q the field of rational numbers is closed under usual addition ...

39. Proof: Suppose r and s are rational numbers. If r +s is rational 39. Proof: Supposer...

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Introduction to the theory of computation

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39. "Proof: Supposer and s are rational numbers. If r + s is rational, then by definition of rational r + s = a/b for some integers a and b with b 0. Also sincer and s are rational, r = i/j and s=...
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39. Proof: Suppose r and s are rational numbers. If r +s is rational 39. Proof: Supposer...

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