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arXiv 2009.00344math.AC
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整数值多项式的不可约性I

Irreducibility of integer-valued polynomials I

Devendra Prasad

摘要:

设$S \subset R$是唯一分解整环$R$的任意子集,$\K$是$R$的分数域。$S$上的整数值多项式环是集合$\mathrm{Int}(S,R)= \{ f \in \mathbb{K}[x]: f(a) \in R\ \forall\ a \in S \}.$本文研究了唯一分解整环上的整数值多项式的不可约性。给出了一类特殊序列的构造方法,称之为$d$ -序列.然后利用这些序列得到了$\mathrm{Int}(S,R).$中多项式不可约的一个判别准则。在某些特殊情况下,我们显式地构造了这些序列,并利用这些序列检验了$\mathrm{Int}(S,R).$中某些多项式的不可约性。最后,我们将所得结果推广到戴德金整环的任意子集上。

英文摘要:

Let $S \subset R$ be an arbitrary subset of a unique factorization domain $R$ and $\K$ be the field of fractions of $R$. The ring of integer-valued polynomials over $S$ is the set $\mathrm{Int}(S,R)= \{ f \in \mathbb{K}[x]: f(a) \in R\ \forall\ a \in S \}.$ This article is an effort to study the irreducibility of integer-valued polynomials over arbitrary subsets of a unique factorization domain. We give a method to construct special kinds of sequences, which we call $d$-sequences. We then use these sequences to obtain a criteria for the irreducibility of the polynomials in $\mathrm{Int}(S,R).$ In some special cases, we explicitly construct these sequences and use these sequences to check the irreducibility of some polynomials in $\mathrm{Int}(S,R).$ At the end, we suggest a generalization of our results to an arbitrary subset of a Dedekind domain.

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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