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arXiv 2303.00484math.NT
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ON某些数域的指数因子

ON the index divisors of certain number fields

Anuj Jakhar, Ravi Kalwaniya

摘要:

设$K=\Q(θ)$是一个代数数域,其中$θ$是一个不可约四项式$f(x) = x^6+ax^m+bx+c\in\Z[x] $的根,其中$m\in\{2,3,4,5\}$ .本文给出了仅涉及$a,~b,~c$和$m$的$K$非单演的一些显式条件.在每种情况下,我们提供了一个合理的素数$p$划分领域$K$指数的最高权力。特别是,我们提供了一个部分答案的问题$22$ Narkiewicz \cite{Nar}这些号码字段。最后,我们通过例子说明我们的结果。

英文摘要:

Let $K=\Q(θ)$ be an algebraic number field with $θ$ a root of an irreducible quadrinomial $f(x) = x^6+ax^m+bx+c\in\Z[x] $ with $m\in\{2,3,4,5\}$. In the present paper, we give some explicit conditions involving only $a,~b,~c$ and $m$ for which $K$ is non-monogenic. In each case, we provide the highest power of a rational prime $p$ dividing index of the field $K$. In particular, we provide a partial answer to the Problem $22$ of Narkiewicz \cite{Nar} for these number fields. Finally, we illustrate our results through examples.

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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