Yuri Linnik and Mark Naimark, are Soviet's from which occupation?
Yuri Linnik Yuri Vladimirovich Linnik (Russian: Ю́рий Влади́мирович Ли́нник ; January 8, 1915 – June 30, 1972) was a Soviet mathematician active in number theory, probability theory and mathematical statistics.
Maksim Bоrtnik Maksim Bоrtnik (born July 3, 1987 in Kharkiv), in the Ukrainian SSR of the Soviet Union (in present-day Ukraine).