Bialy Michael
School of Mathematical Sciences, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel-Aviv University, Tel Aviv 6997801, Israel.
Entropy (Basel). 2022 Nov 3;24(11):1600. doi: 10.3390/e24111600.
The goal of the first part of this note is to get an explicit formula for rotation number and Mather β-function for ellipse. This is done here with the help of non-standard generating function of billiard problem. In this way the derivation is especially simple. In the second part we discuss application of Mather β-function to rigidity problem.
本笔记第一部分的目标是得到椭圆的旋转数和马瑟β函数的显式公式。这借助台球问题的非标准生成函数在此处完成。通过这种方式,推导特别简单。在第二部分,我们讨论马瑟β函数在刚性问题中的应用。