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arXiv 1304.0571math.NT
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流形上的坏逼近点

Badly approximable points on manifolds

Victor Beresnevich

摘要:

本文的动机是丢番图逼近理论中的两个问题,即关于欧几里得空间子流形上的差逼近点的Davenport问题和关于加权差逼近点集的交的Schmidt问题.这些问题最近已经在第二维中得到解决,但在更高的维度中仍然没有解决。在本文中,我们开发了新的技术,使我们能够解决他们在充分的一般性。该技术依赖于格点计数和Bernik,Kleinbock和Margulis的强大的定量结果。本文的主要定理是:$R^n$的任意解析非退化子流形上的加权差逼近点集的有限交具有满维数。这一结果的后果之一是存在超越实数严重逼近的代数数的任何程度。

英文摘要:

This paper is motivated by two problems in the theory of Diophantine approximation, namely, Davenport's problem regarding badly approximable points on submanifolds of a Euclidean space and Schmidt's problem regarding the intersections of the sets of weighted badly approximable points. The problems have been recently settled in dimension two but remain open in higher dimensions. In this paper we develop new techniques that allow us to tackle them in full generality. The techniques rest on lattice points counting and a powerful quantitative result of Bernik, Kleinbock and Margulis. The main theorem of this paper implies that any finite intersection of the sets of weighted badly approximable points on any analytic nondegenerate submanifold of $R^n$ has full dimension. One of the consequences of this result is the existence of transcendental real numbers badly approximable by algebraic numbers of any degree.

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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