Prove that , p an odd prime. My attempt: If , and the result follows immediately. But what if ?
Follow Math Help Forum on Facebook and Google+
Originally Posted by alexmahone Prove that , p an odd prime. My attempt: If , and the result follows immediately. But what if ? Theorem: For an odd prime there are exactly quadratic residues and exactly quadratic nonresidues.* So restating the theorem, half of the terms are and half are .