用二项式表示的有限域中的高阶元

IF 1 Q1 MATHEMATICS Carpathian Mathematical Publications Pub Date : 2022-04-29 DOI:10.15330/cmp.14.1.238-246
V. Bovdi, A. Diene, R. Popovych
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引用次数: 0

摘要

设$F_q$为包含$q$元素的字段,其中$q$是质数$p\geq 5$的幂。对于任意整数$m\geq 2$和$a\in F_q^*$,使得多项式$x^m-a$在$F_q[x]$中不可约,我们结合两种不同的方法来显式地构造字段$F_q[x]/\langle x^m-a\rangle$中的高阶元素。也就是说,我们找到了乘法阶至少为$5^{\sqrt[3]{m/2}}$的元素,这比以前得到的这类扩展域的界要好。
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Elements of high order in finite fields specified by binomials
Let $F_q$ be a field with $q$ elements, where $q$ is a power of a prime number $p\geq 5$. For any integer $m\geq 2$ and $a\in F_q^*$ such that the polynomial $x^m-a$ is irreducible in $F_q[x]$, we combine two different methods to explicitly construct elements of high order in the field $F_q[x]/\langle x^m-a\rangle$. Namely, we find elements with multiplicative order of at least $5^{\sqrt[3]{m/2}}$, which is better than previously obtained bound for such family of extension fields.
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来源期刊
CiteScore
1.90
自引率
12.50%
发文量
31
审稿时长
25 weeks
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