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arXiv 2203.01293math.NTmath.CO
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函数域中的Paley图与Sárközy定理

Paley Graphs and Sárközy's Theorem In Function Fields

Eric Naslund

摘要:

Sárközy定理指出稠密整数集必须包含两个元素,它们的差是$k^{th}$幂。继Croot、Lev和Pach的多项式方法的突破之后,Green证明了$\mathbb{F}_{q}[T]$的这一结果的强定量版本。在本文中,我们提供了一个下界的Sárközy定理的功能域通过调整Ruzsa的建设类似的问题在$\mathbb{Z}$。我们构造了一个次数为$<n$的多项式集合$A$,使得$A$不包含与$|A|=q^{n-n/2k}$的$k^{th}$幂差。此外,我们证明了一些关于广义Paley图的独立数的结果,包括Ruzsa的一个主张的推广,这有助于理解该方法的局限性。

英文摘要:

Sárközy's theorem states that dense sets of integers must contain two elements whose difference is a $k^{th}$ power. Following the polynomial method breakthrough of Croot, Lev, and Pach, Green proved a strong quantitative version of this result for $\mathbb{F}_{q}[T]$. In this paper we provide a lower bound for Sárközy's theorem in function fields by adapting Ruzsa's construction for the analogous problem in $\mathbb{Z}$. We construct a set $A$ of polynomials of degree $<n$ such that $A$ does not contain a $k^{th}$ power difference with $|A|=q^{n-n/2k}$. Additionally, we prove a handful of results concerning the independence number of generalized Paley Graphs, including a generalization of a claim of Ruzsa, which helps with understanding the limit of the method.

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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