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arXiv 1711.08306math.NT
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具有给定迹和余迹的有限域元素个数的计算

Computing the Number of Finite Field Elements with Prescribed Trace and Co-trace

Assen Bojilov, Lyubomir Borissov, Yuri Borissovınst

摘要:

本文讨论了在任意特征$p$的情况下,具有指定迹和共迹的有限域元素的数量的计数问题。我们表明,这个问题可以归结为解决一个系统的$p-1$线性方程组的系数矩阵的循环矩阵的略有修改所形成的Kloosterman和域$\MF_{p}$。所提出的方法的情况下,特征$p = 2,3$和$5$。

英文摘要:

In this paper, we address the problem for enumerating the number of finite field elements with prescribed trace and co-trace in case of arbitrary characteristic $p$. We show that this problem can be reduced to solving a system of $p-1$ linear equations with matrix of coefficients a slight modification of circulant matrix formed by the Kloosterman sums over the field $\MF_{p}$. The presented approach is illustrated in the cases of characteristic $p = 2,3$ and $5$.

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