Bryna Kra

Bryna Kra
Born
Bryna Rebekah Kra

1966 (age 5859)
CitizenshipAmerican
Alma materStanford University, Harvard University
Known forErgodic theory
AwardsLevi L. Conant Prize (2010)
Scientific career
InstitutionsNorthwestern University
University of Michigan
Thesis Commutative groups of diffeomorphisms of the circle  (1995)
Doctoral advisorYitzhak Katznelson
Websitewww.math.northwestern.edu/~kra/

Bryna Rebekah Kra (born 1966) is an American mathematician and the Sarah Rebecca Roland Professor at Northwestern University. Kra served as the president of the American Mathematical Society from 2023 to 2025. She is a member of the American Academy of Arts and Sciences and the National Academy of Sciences. Her academic work centered on dynamical systems and ergodic theory. In particular Kra has made significant contributions to the structure theory of characteristic factors for multiple ergodic averages. This work has allowed her to address problems in number theory and combinatorics.