Sergiu Klainerman (born May 13, 1950) is a mathematician known for his contributions to the study of hyperbolic differential equations and general relativity.
He is currently the Eugene Higgins Professor of Mathematics at Princeton University, where he has been teaching since 1987.
From 1980 to 1987 he was a faculty member at New York University.
Klainerman is a member of the U.S.
National Academy of Sciences (elected 2005), a foreign member of the French Academy of Sciences (elected 2002) and a Fellow of the American Academy of Arts and Sciences (elected 1996).
He was elected to the 2018 class of fellows of the American Mathematical Society.He was named a MacArthur Fellow in 1991 and Guggenheim Fellow in 1997.
Klainerman was awarded the BĂ´cher Memorial Prize by the American Mathematical Society in 1999 "for his contributions to nonlinear hyperbolic equations".