Ivan Petrovsky

Ivan Petrovsky
Иван Петровский
Petrovsky on a 1973 Soviet stamp
Born(1901-01-18)18 January 1901
Sevsk, Oryol Governorate, Russian Empire
Died15 January 1973(1973-01-15) (aged 71)
Moscow, Russian SFSR, Soviet Union
Alma materMoscow State University
Known forHyperbolic partial differential equations
Kolmogorov–Petrovsky–Piskunov equation
Petrovsky lacuna
Scientific career
InstitutionsMoscow State University
Steklov Institute of Mathematics
Doctoral advisor
Dmitri Egorov
Doctoral students
Olga Ladyzhenskaya
Evgenii Landis
Olga Oleinik
Sergei Godunov
Aleksei Filippov

Ivan Georgiyevich Petrovsky (Russian: Иван Георгиевич Петровский; 18 January 1901 – 15 January 1973) was a Soviet mathematician working mainly in the field of partial differential equations. He greatly contributed to the solution of Hilbert's 19th and 16th problems, and discovered what are now called Petrovsky lacunas. He also worked on the theories of boundary value problems, probability, and on the topology of algebraic curves and surfaces.