Quadratic Residue
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Let p be an odd prime and b be a quadratic residue of p.
For p=19 for which pâ?¡3 (mod 4), show by direct calculation that the pairs 1 and 18, 2 and 17, 3 and 16, and so on, have one quadratic residue and one quadratic nonresidue.
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Quadratic Residue is contextualized.
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QR: Quadratic residue
QNR: Quadratic nonresidue
QNR ...
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