1946- Russian-born mathematician who received a 1978 Fields Medal for his work in combinatorics, ergodic theory, differential geometry, dynamical systems, and Lie groups. Lie groups, a branch of group theory, have algebraic structure and are subsets of...

Gregori Aleksandrovich Margulis (first name often given as Gregory, Grigori or Grigory) (born February 24 1946) is a Russian mathematician known for his far-reaching work on lattices in Lie groups, and the introduction of methods from ergodic theory...