births
August 21, 1909
Nikolay Bogolyubov, Russian mathematician and physicist (died 1992)

Nikolay Bogolyubov
Nikolay Nikolayevich Bogolyubov was a Soviet, Ukrainian and Russian mathematician and theoretical physicist known for a significant contribution to quantum field theory, classical and quantum statistical mechanics, and the theory of dynamical systems; he was the recipient of the 1992 Dirac Medal for his works and studies.