Marina Ratner

Marina E. Ratner
Marina Ratner in 1988
Born(1938-10-30)October 30, 1938
Moscow, Russian SFSR
DiedJuly 7, 2017(2017-07-07) (aged 78)
El Cerrito, California
NationalityRussian
Alma materMoscow State University
AwardsOstrowski Prize (1993)
Scientific career
FieldsMathematics
InstitutionsUniversity of California, Berkeley
Thesis Geodesic Flows on Unit Tangent Bundles of Compact Surfaces of Negative Curvature  (1969)
Doctoral advisorYakov Sinai

Marina Evseevna Ratner (Russian: Мари́на Евсе́евна Ра́тнер; October 30, 1938 – July 7, 2017[1]) was a professor of mathematics at the University of California, Berkeley who worked in ergodic theory.[2] Around 1990, she proved a group of major theorems concerning unipotent flows on homogeneous spaces, known as Ratner's theorems.[3] Ratner was elected to the American Academy of Arts and Sciences in 1992,[4] awarded the Ostrowski Prize in 1993 and elected to the National Academy of Sciences the same year. In 1994, she was awarded the John J. Carty Award from the National Academy of Sciences.[5]

  1. ^ "In Memoriam". Department of Mathematics at University of California Berkeley. Retrieved 2020-03-24.
  2. ^ Larry Riddle. "Marina Ratner". agnesscott.edu. Retrieved 2020-03-24.
  3. ^ Morris, Dave (2005). Ratner's theorems on unipotent flows (PDF). Chicago: University of Chicago Press. CiteSeerX 10.1.1.240.9520. ISBN 0-226-53983-0. OL 10192523M.
  4. ^ "LIST OF ACTIVE MEMBERS BY CLASS" (PDF). American Academy of Arts and Sciences. October 27, 2016. Retrieved 2020-03-24.
  5. ^ "John J. Carty Award for the Advancement of Science". National Academy of Sciences. Archived from the original on 29 December 2010. Retrieved 25 February 2011.