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arXiv 2201.06156math.PRmath.COmath.NT
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有限域上随机多项式低次因子的普适性

Universality for low degree factors of random polynomials over finite fields

Jimmy He, Huy Tuan Pham, Max Wenqiang Xu

摘要:

我们证明了$\mathbb{F}_q$上具有独立但非均匀系数的随机多项式$f$的低次不可约因子的计数与均匀随机多项式的低次不可约因子的计数相似,表现出有限域上随机多项式的一种普适性.我们最强的结果需要各种假设的参数,但我们能够得到的结果只需要$q=p$一个素数与$p\leq \exp({n^{1/13}})$其中$n$是多项式的程度。我们的证明使用傅里叶分析,并依赖于最近由Breuillard和Varjú应用的工具来研究$ax+b$过程,该过程显示$f(α)$在单个点处的等分布。我们扩展到处理重根和哈斯衍生物的$f$,这使我们能够研究的不可约因子的多重性。

英文摘要:

We show that the counts of low degree irreducible factors of a random polynomial $f$ over $\mathbb{F}_q$ with independent but non-uniform coefficients behave like that of a uniform random polynomial, exhibiting a form of universality for random polynomials over finite fields. Our strongest results require various assumptions on the parameters, but we are able to obtain results requiring only $q=p$ a prime with $p\leq \exp({n^{1/13}})$ where $n$ is the degree of the polynomial. Our proofs use Fourier analysis, and rely on tools recently applied by Breuillard and Varjú to study the $ax+b$ process, which show equidistribution for $f(α)$ at a single point. We extend this to handle multiple roots and the Hasse derivatives of $f$, which allow us to study the irreducible factors with multiplicity.

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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