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单词 QuadraticReciprocityForPolynomials
释义

quadratic reciprocity for polynomials


Let F be a finite fieldMathworldPlanetmath of characteristicPlanetmathPlanetmath p, and let f and g be distinct monic irreducible (non-constant) polynomialsPlanetmathPlanetmath in the polynomial ring F[X]. Define the Legendre symbolMathworldPlanetmath (fg) by

(fg):={1 if f is a square in the quotient ring F[X]/(g),-1 otherwise.

The quadratic reciprocity theorem for polynomials over a finite field states that

(fg)(gf)=(-1)p-12deg(f)deg(g).

References

  • 1 Feng, Ke Qin and Ying, Linsheng,An elementary proof of the law of quadratic reciprocity in Fq(T).Sichuan Daxue Xuebao 26 (1989), Special Issue, 36–40.
  • 2 Merrill, Kathy D. and Walling, Lynne H.,On quadratic reciprocity over function fieldsMathworldPlanetmath.Pacific J. Math. 173 (1996), no. 1, 147–150.
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更新时间:2025/5/5 5:24:13