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October 12th, 2018, 08:24 AM  #1 
Newbie Joined: Jul 2018 From: morocco Posts: 19 Thanks: 0 Math Focus: algebraic number theory  What is a Rational prime?
Hello When we say let $p$ be rational prime, automatically that does mean that p>0?? thanks 
October 12th, 2018, 10:12 AM  #2 
Senior Member Joined: Aug 2017 From: United Kingdom Posts: 282 Thanks: 85 Math Focus: Algebraic Number Theory, Arithmetic Geometry 
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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