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arXiv 0907.3970math.NTcs.ITmath.IT
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生成Kloosterman和幂矩的无穷族递归公式:辛情形

Infinite Families of Recursive Formulas Generating Power Moments of Kloosterman Sums: Symplectic Case

Dae San Kim

摘要:

本文构造了关于辛群Sp(2 n,q)的某个极大抛物子群的两个具有双陪集的二元线性码无限族,其中q是2的幂.然后得到了Kloosterman和的幂矩以及二维Kloosterman和的幂矩关于码中权的频率的无穷族递推公式。这是通过Pless幂矩恒等式和利用与辛群Sp(2n,q)的“高斯和”的计算有关的双陪集上的指数和的显式来完成的。

英文摘要:

In this paper, we construct two infinite families of binary linear codes associated with double cosets with respect to certain maximal parabolic subgroup of the symplectic group Sp(2n,q) Here q is a power of two. Then we obtain an infinite family of recursive formulas for the power moments of Kloosterman sums and those of 2-dimensional Kloosterman sums in terms of the frequencies of weights in the codes. This is done via Pless power moment identity and by utilizing the explicit expressions of exponential sums over those double cosets related to the evaluations of "Gauss sums" for the symplectic groups Sp(2n,q).

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