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arXiv · 2205.00796

On an explicit reciprocity law in local class field theory via $(\varphi, \Gamma)$-modules

Naoto Dainobu
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Abstract

Let $K$ be an unramified extension of $\mathbb{Q}_2$ and $\mu_{2^n}$ the group of $2^n$-th root of unity for a fixed integer $n\geqslant 2$. In this paper, we give an explicit formula for the $\mu_{2^n}$-valued Hilbert symbol over $K_n := K(\mu_{2^n})$ using the theory of $(\varphi, \Gamma)$-modules.

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Naoto Dainobu. 2022-05-02. On an explicit reciprocity law in local class field theory via $(\varphi, \Gamma)$-modules. https://arxiv.org/abs/2205.00796

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