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arXiv 2210.06992math.NT
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$S_4$ -具有规定范数的四次曲线

$S_4$-quartics with Prescribed Norms

Sebastian Monnet

摘要:

给定数域$k$和它的一个生成子群$\mathcal{A} \subseteq k^*$,研究了$k$的$S_4$ -四次扩张的分布,使得$\mathcal{A}$的元素是范数.我们表明,这种扩展的密度是产品的所谓的“当地群众”在每一个地方的$k$。我们给这些当地群众明确在几乎所有的情况下,并给出一个算法计算其余的情况下。

英文摘要:

Given a number field $k$ and a finitely generated subgroup $\mathcal{A} \subseteq k^*$, we study the distribution of $S_4$-quartic extensions of $k$ such that the elements of $\mathcal{A}$ are norms. We show that the density of such extensions is the product of so-called "local masses" at every place of $k$. We give these local masses explicitly in almost all cases and give an algorithm for computing the remaining cases.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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