Alexander Friedmann

This article is about the Russian cosmologist. For the Russian astrophysicist, see Alexei Fridman. For the Polish Orthodox Jewish rabbi, see Alexander Zusia Friedman.

In this name that follows East Slavic naming customs, the patronymic is Alexandrovich and the family name is Friedmann.

Alexander Friedmann
Александр Фридман
Born	Alexander Alexandrovich Friedmann (1888-06-16)16 June 1888 Saint Petersburg, Russia
Died	16 September 1925(1925-09-16) (aged 37) Leningrad, Soviet Union
Education	St. Petersburg State University
Known for	Friedmann equations Friedmann–Lemaître–Robertson–Walker metric
Spouse	Natalia Malinina
Scientific career
Fields	Mathematics and physics
Workplaces	Petrograd Polytechnical Institute Main Geophysical Observatory
Doctoral advisor	Vladimir Steklov
Doctoral students	George Gamow Nikolai Kochin Pelageya Polubarinova-Kochina
Signature

Alexander Alexandrovich Friedmann (also spelled Friedman or Fridman; /ˈfriːdmən/; Russian: Алекса́ндр Алекса́ндрович Фри́дман; 16 June [O.S. 4 June] 1888 – 16 September 1925) was a Russian and Soviet physicist and mathematician. He originated the pioneering theory that the universe is expanding, governed by a set of equations he developed known as the Friedmann equations.