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arXiv 1608.04547math.NT
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可定义集上的丢番图逼近

Diophantine Approximations on Definable Sets

P. Habegger

摘要:

考虑$\mathbb{R}^n$上一个实解析函数的消失轨迹限制为$[0,1]^n$。我们限制了高度有界的有理点的数量,这些点可以很好地近似这个集合。我们的结果是制定和证明的上下文中的O-最小结构,给出了一个一般的框架,上面提到的集。它补充了定理的皮拉-威尔基,产生了一个界的数量相同的质量的有理点的有界高度,躺在一个可定义的集。我们把注意力集中在多项式有界的O-极小结构,允许代数点的有界度,并提供了一个估计,是统一的一些家庭的可定义集。我们应用这些结果来研究固定长度的单位根的总和是小模。

英文摘要:

Consider the vanishing locus of a real analytic function on $\mathbb{R}^n$ restricted to $[0,1]^n$. We bound the number of rational points of bounded height that approximate this set very well. Our result is formulated and proved in the context of o-minimal structure which give a general framework to work with sets mentioned above. It complements the theorem of Pila-Wilkie that yields a bound of the same quality for the number of rational points of bounded height that lie on a definable set. We focus our attention on polynomially bounded o-minimal structures, allow algebraic points of bounded degree, and provide an estimate that is uniform over some families of definable sets. We apply these results to study fixed length sums of roots of unity that are small in modulus.

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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