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October 12th, 2018, 08:24 AM   #1
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What is a Rational prime?

Hello

When we say let $p$ be rational prime, automatically that does mean that p>0??

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October 12th, 2018, 10:12 AM   #2
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Normally I'd answer a question like this by saying, "It depends on the author." But, looking through my books, it seems people usually don't bother specifying. I guess this is because it very rarely actually matters whether $p$ is positive, and, on the odd occasion that it does matter, it's usually obvious from the context what is meant.
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