KnowraQuadratic residueLinked fromLinked fromThe 12 pages that link to Quadratic residue, each with the reason it gives.All 12Broader topic 2Related 4Narrower topic 6Quadratic reciprocityNarrower topic: The theorem is specifically about quadratic residues modulo prime moduli.Legendre symbolNarrower topic: The symbol classifies whether its numerator represents a square modulo its prime denominator.Euler's criterionNarrower topic: Euler's criterion gives a test for quadratic residues when the modulus is prime.Jacobi symbolNarrower topic: The Jacobi symbol is designed to encode quadratic-residue information, though imperfectly for composite moduli.Cubic reciprocityNarrower topic: Cubic residues extend the same power-residue question from squares to cubes.Proth's theoremNarrower topic: The value −1's residue behavior helps explain why the congruence certifies primality.