科学研究
报告题目:

Badly approximable points on manifolds and unipotent orbits in homogeneous spaces

报告人:

报告时间:

报告地点:

报告摘要:

报告题目:

Badly approximable points on manifolds and unipotent orbits in homogeneous spaces

报 告 人:

杨磊(四川大学)

报告时间:

2017年11月23日 10:30--11:30

报告地点:

数学院三楼报告厅

报告摘要:

We will study n-dimensional badly approximable points on manifolds. Given an smooth non-degenerate submanifold in R^n, we will show that any countable intersection of the sets of weighted badly approximable points on the manifold has full Hausdorff dimension. This strengthens a previous result of Beresnevich by removing the condition on weights and weakening the analytic condition on manifolds to smooth condition. Compared with the work of Beresnevich, we study the problem through homogeneous dynamics. It turns out that the problem is closely related to the study of distribution of long pieces of unipotent orbits in homogeneous spaces.