Grigory Margulis

Grigory Margulis
Григорий Маргулис
Margulis in 2006
Born	(1946-02-24) February 24, 1946 (age 78) Moscow, Soviet Union
Nationality	Russian, American[1]
Education	Moscow State University (BS, MS, PhD)
Known for	Diophantine approximation Lie groups Superrigidity theorem Arithmeticity theorem Expander graphs Oppenheim conjecture
Awards	Fields Medal (1978) Lobachevsky Prize (1996) Wolf Prize (2005) Abel Prize (2020)
Scientific career
Fields	Mathematics
Institutions	Yale University
Thesis	On some aspects of the theory of Anosov flows (1970)
Doctoral advisor	Yakov Sinai
Doctoral students	Emmanuel Breuillard Hee Oh

Grigory Aleksandrovich Margulis (Russian: Григо́рий Алекса́ндрович Маргу́лис, first name often given as Gregory, Grigori or Gregori; born February 24, 1946) is a Russian-American^[2] mathematician known for his work on lattices in Lie groups, and the introduction of methods from ergodic theory into diophantine approximation. He was awarded a Fields Medal in 1978, a Wolf Prize in Mathematics in 2005, and an Abel Prize in 2020, becoming the fifth mathematician to receive the three prizes. In 1991, he joined the faculty of Yale University, where he is currently the Erastus L. De Forest Professor of Mathematics.^[3]