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Alexander Friedmann
Alexander Alexandrovich Friedmann (also spelled Friedman or Fridman, (ロシア語:Алекса́ндр Алекса́ндрович Фри́дман)) (June 17 (old style or new style) by himself, June 16 (4 old style) by J. O'Conor in 1888, Saint Petersburg, Russian Empire – September 16, 1925, Leningrad, USSR) was a Russian and Soviet physicist and mathematician. He is best known for his pioneering theory that the universe was expanding, governed by a set of equations he developed now known as the Friedmann equations.
== Early life==
Alexander Friedmann was born to the composer and ballet dancer Alexander Friedmann (who was a son of a baptized Jewish cantonist) and the pianist Ludmila Ignatievna Voyachek. Friedmann was baptized into the Russian Orthodox Church as an infant, and lived much of his life in Saint Petersburg.
Friedmann obtained his degree in St. Petersburg State University in 1910, and became a lecturer in Saint Petersburg Mining Institute.
From his school days, Friedmann found an inseparable companion in Jacob Tamarkin, who at the end of his career was one of Brown University's most distinguished mathematicians.〔Pyenson L. Book review. ''Physics Today'' (online ). September 1994; 47(9):93. Available from: MasterFILE Premier, Ipswich, MA. Accessed October 18, 2012.〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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