Yuri Linnik and Mark Naimark, are Soviet's from which occupation?
Mark Naimark Mark Aronovich Naimark (Russian: Марк Ароно́вич Наймарк ) (5 December 1909 – 30 December 1978) was a Soviet mathematician who made important contributions to functional analysis and mathematical physics.
Maksim Bоrtnik Maksim Bоrtnik (born July 3, 1987 in Kharkiv), in the Ukrainian SSR of the Soviet Union (in present-day Ukraine).