Question: Yuri Linnik and Mark Naimark, are Soviet's from which occupation?
Context: 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. 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. Mikhail Nikiforovich Linnik (Russian: Михаил Никифорович Линник; 25 October 1916 – 21 December 2007) was a Soviet Army captain and Hero of the Soviet Union.  Linnik was awarded the title Hero of the Soviet Union and the Order of Lenin for his actions during the Lublin–Brest Offensive in September 1944. The Group of Soviet Forces in Germany (1954–1988) (Russian: Группа советских войск в Германии, ГСВГ ), also known as the Group of Soviet Occupation Forces in Germany (1945–1954) and the Western Group of Forces (1988–1994) were the troops of the Soviet Army in East Germany.  The Group of Soviet Occupation Forces in Germany was formed after the end of the Second World War from units of the 1st and 2nd Belorussian Fronts.  The group helped suppress the Uprising of 1953 in East Germany.  After the end of occupation functions in 1954 the group was renamed the Group of Soviet Forces in Germany.  The group represented Soviet interests in East Germany during the Cold War.  After changes in Soviet foreign policy during the late 1980s, the group shifted to a more defensive role and in 1988 became the Western Group of Forces.  Russian forces remained in Eastern Germany after the dissolution of the Soviet Union and the reunification of Germany until 1994. In mathematics, the Gelfand–Naimark theorem states that an arbitrary C*-algebra "A" is isometrically *-isomorphic to a C*-algebra of bounded operators on a Hilbert space.  This result was proven by Israel Gelfand and Mark Naimark in 1943 and was a significant point in the development of the theory of C*-algebras since it established the possibility of considering a C*-algebra as an abstract algebraic entity without reference to particular realizations as an operator algebra. In mathematical representation theory, two representations of a group on topological vector spaces are called Naimark equivalent (named after Mark Naimark) if there is a closed bijective linear map between dense subspaces preserving the group action. The Soviet Occupation Zone (German: Sowjetische Besatzungszone (SBZ) or Ostzone ; Russian: Советская оккупационная зона Германии , "Sovetskaya okkupatsionnaya zona Germanii", "Soviet Occupation Zone of Germany") was the area of central Germany occupied by the Soviet Union from 1945 on, at the end of World War II.  On 7 October 1949 the German Democratic Republic (GDR), which became commonly referred to as East Germany, was established in the Soviet Occupation Zone. The occupation of the Baltic states was the military occupation of the three Baltic states—Estonia, Latvia and Lithuania—by the Soviet Union under the auspices of the Molotov–Ribbentrop Pact on 14 June 1940 followed by their incorporation into the USSR as constituent republics, unrecognised by most Western powers.  On 22 June 1941 Nazi Germany attacked the USSR and within weeks occupied the Baltic territories.  In July 1941, the Baltic territory was incorporated into the "Reichskommissariat Ostland" of the Third Reich.  As a result of the Baltic Offensive of 1944, the Soviet Union recaptured most of the Baltic states and trapped the remaining German forces in the Courland pocket until their formal surrender in May 1945.  The Soviet "annexation occupation" ("Annexionsbesetzung " or occupation "sui generis") of the Baltic states lasted until August 1991, when the Baltic states regained independence. An election for a Supreme Soviet took place in Moldavia in 1940.  The poll was an effort to legitimize the Soviet occupation of Bessarabia and Northern Bukovina which had taken place immediately prior.  Since 1918 these regions had been part of Romania.  All deputies returned were members of the Communist Party of Moldavia, a branch of the Communist Party of the Soviet Union.  The Supreme Soviet subsequently adopted the 1941 Constitution of the Moldavian Soviet Socialist Republic, under which the MSSR was a constituent of the Soviet Union.  Soviet control was interrupted by the Axis occupation from 1941 to 1944. In functional analysis, a discipline within mathematics, given a C*-algebra "A", the Gelfand–Naimark–Segal construction establishes a correspondence between cyclic *-representations of "A" and certain linear functionals on "A" (called "states").  The correspondence is shown by an explicit construction of the *-representation from the state.  It is named for Israel Gelfand, Mark Naimark, and Irving Segal.
Answer: mathematician