Leonid Kantorovich and Vladimir Arnold both acted as what in the Soviet Union?
Vladimir Arnold Vladimir Igorevich Arnold (alternative spelling Arnol'd, Russian: Влади́мир И́горевич Арно́льд , 12 June 1937 – 3 June 2010) was a Soviet and Russian mathematician. While he is best known for the Kolmogorov–Arnold–Moser theorem regarding the stability of integrable systems, he made important contributions in several areas including dynamical systems theory, catastrophe theory, topology, algebraic geometry, symplectic geometry, differential equations, classical mechanics, hydrodynamics and singularity theory, including posing the ADE classification problem, since his first main result—the solution of Hilbert's thirteenth problem in 1957 at the age of 19.
Georgy Arbatov Georgy Arkadyevich Arbatov (Russian: Гео́ргий Арка́дьевич Арба́тов , 19 May 1923, Kherson – 1 October 2010, Moscow) was a Soviet and Russian political scientist who served as an adviser to five General Secretaries of the Communist Party of the Soviet Union and was best known in the West during the Cold War era as a representative for the policies of the Soviet Union in the United States, where his fluent English helped make him a frequent guest on American television. He was the founding Director and later Emeritus Director of the Institute of USA and Canada of the Russian Academy of Sciences (ISKRAN), the Soviet and Russian think tank for the study of USA and Canada.