On measure rigidity of unipotent subgroups of semisimple groups

Marina Ratner

Marina Evseevna Ratner (30 oktober 1938 – 7 juli 2017) was een van oorsprong Russische hoogleraar in de wiskunde aan de Universiteit van Californië in Berkeley.

מרינה ראטנר

Марина Ратнер

Marina Ratner

Marina Ratner

Marina Ratner

Marina Ratner

Marina Ratner

Marina Evseevna Ratner (October 30, 1938 – July 7, 2017) was a professor of mathematics at the University of California, Berkeley who worked in ergodic theory.

Ratner's theorems

In mathematics, Ratner's theorems are a group of major theorems in ergodic theory concerning unipotent flows on homogeneous spaces proved by Marina Ratner around 1990.