Diophantine approximation on rational quadrics

Diophantine approximation on rational quadrics
复制标题

有理二次曲面上的丢番图近似

DOI:
10.1007/s00208-005-0683-x
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发表时间:
2005
影响因子:
1.4
通讯作者:
Cornelia Drutu
Cornelia Drutu
中科院分区:
数学2区
文献类型:
--
作者:
Cornelia Drutu

文献摘要

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我们计算有理二次曲面上非常近似的向量集的豪斯多夫维数。我们使用普遍存在的系统和局部对称空间的几何形状。作为副产品,我们获得了具有固定最大奇异方向的一组光线的豪斯多夫维数,这些光线无限多次地移入线性深度的局部对称空间的一端。
We compute the Hausdorff dimension of sets of very well approximable vectors on rational quadrics. We use ubiquitous systems and the geometry of locally symmetric spaces. As a byproduct we obtain the Hausdorff dimension of the set of rays with a fixed maximal singular direction, which move away into one end of a locally symmetric space at linear depth, infinitely many times.