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arXiv · 2105.14872

Davenport and Hasse's theorems and lifts of multiplication matrices of Gaussian periods

Akinari Hoshi·Kazuki Kanai
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Abstract

Let $e \geq 2$ be an integer, $p^r$ be a prime power with $p^r \equiv 1\ ({\rm mod}\ e)$ and $\eta_r(i)$ be Gaussian periods of degree $e$ for ${\mathbb F}_{p^r}$. By the dual form of Davenport and Hasse's lifting theorem on Gauss sums, we establish lifts of the multiplication matrices of the Gaussian periods $\eta_r(0),\ldots,\eta_r(e-1)$ which are defined by F. Thaine. We also give some examples of the explicit lifts for prime degree $e$ with $3\leq e\leq 23$ which also illustrate relations among lifts of Jacobi sums, Gaussian periods and multiplication matrices of Gaussian periods.

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Akinari Hoshi, Kazuki Kanai. 2021-05-31. Davenport and Hasse's theorems and lifts of multiplication matrices of Gaussian periods. https://arxiv.org/abs/2105.14872

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