Videos

Counting finite-order lattice points in Teichmüller space

Presenter
October 25, 2016
Keywords:
  • Mapping Class Group
  • Teichmüller space
  • Counting
MSC:
  • 32G15
  • 20-xx
  • 20F65
  • 57-xx
  • 57M07
Abstract
I will discuss a counting problem for the orbit of the mapping class group in Teichmüller space. Athreya, Bufetov, Eskin, and Mirzakhani have shown that the number of orbit points in a Teichmüller ball of radius R grows like e^{hR}, where h is the dimension of Teichmüller space. Maher has shown that pseudo-Anosov mapping classes are "generic" in the sense that the proportion of these points that are translates by pseudo-Anosovs tends to 1 as R tends to infinity. We aim to quantify this genericity by showing that the number of translates by finite-order and reducible elements have strictly smaller exponential growth rate. In particular, we find that the number of finite-order orbit points grows like e^{hR/2}. Joint work with Howard Masur.
Supplementary Materials