# Books written by Gregory Margulis.

Gregory Margulis is a Russian-American mathematician known for his work on lattices in Lie groups, and the introduction of methods from ergodic theory into diophantine approximation. He won the Fields Medal in 1978 for providing innovative analysis of the structure of Lie groups and received the Abel Prize in 2020.

## Discrete Subgroups of Semisimple Lie Groups

## On Some Aspects of the Theory of Anosov Systems

Uses ergodic theoretic techniques to study the distribution of periodic orbits of Anosov flows. The thesis introduces the "Margulis measure" and uses it to obtain a precise asymptotic formula for counting periodic orbits.