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arXiv 0906.4286math.NT
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闭共轭代数数的分布

The distribution of close conjugate algebraic numbers

Victor Beresnevich, Vasili Bernik, Friedrich Götze

摘要:

我们研究具有一个紧密共轭数的固定次数的实代数数的分布,共轭数之间的距离作为它们的高度的函数给出。主要结果建立了这种代数数在实数中的普遍性,并暗示了它们的数量上的一个尖锐的定量界。虽然主要结果是相当一般的,它意味着新的估计的最小可能的共轭代数数之间的距离,这改进了最近的Bugeaud和Mittette的界限。到目前为止,结果一拉Bugeaud和Mittette依赖于找到明确的家庭多项式集群的根源。在这里,我们提出了一种不同的方法,其中不可约多项式是隐式定制,使其衍生物采取某些值。本文考虑的主要定理的应用包括Baker和Schmidt的一个定理以及Bernik,Kleinbock和Margulis的一个定理在丢番图逼近度量理论中的推广。

英文摘要:

We investigate the distribution of real algebraic numbers of a fixed degree having a close conjugate number, the distance between the conjugate numbers being given as a function of their height. The main result establishes the ubiquity of such algebraic numbers in the real line and implies a sharp quantitative bound on their number. Although the main result is rather general it implies new estimates on the least possible distance between conjugate algebraic numbers, which improve recent bounds of Bugeaud and Mignotte. So far the results a la Bugeaud and Mignotte relied on finding explicit families of polynomials with clusters of roots. Here we suggest a different approach in which irreducible polynomials are implicitly tailored so that their derivatives assume certain values. The applications of our main theorem considered in this paper include generalisations of a theorem of Baker and Schmidt and a theorem of Bernik, Kleinbock and Margulis in the metric theory of Diophantine approximation.

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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