Nikolai Vladimirovich Yefimov (russian: Никола́й Влади́мирович Ефи́мов; 31 May 1910 in Orenburg – 14 August 1982 in

Moscow Moscow ( , US chiefly ; rus, links=no, Москва, r=Moskva, p=mɐskˈva, a=Москва.ogg) is the capital and largest city of Russia. The city stands on the Moskva River in Central Russia, with a population estimated at 13.0 millio ...

) was a Soviet

mathematician A mathematician is someone who uses an extensive knowledge of mathematics in their work, typically to solve mathematical problems. Mathematicians are concerned with numbers, data, quantity, structure, space, models, and change. History On ...

. He is most famous for his work on generalized

Hilbert David Hilbert (; ; 23 January 1862 – 14 February 1943) was a German mathematician, one of the most influential mathematicians of the 19th and early 20th centuries. Hilbert discovered and developed a broad range of fundamental ideas in many ...

's problem on surfaces of negative curvature. Yefimov grew up in Rostov-on-Don and graduated from

Rostov State University Southern Federal University (), abbreviated as SFedU () and formerly known as Rostov State University (1957–2006), is a public university in Rostov Oblast, Russia with campuses in Rostov-on-Don and Taganrog Taganrog ( rus, Таганр� ...

, where he studied with Morduhai-Boltovskoi. He worked at

Voronezh State University Voronezh State University is one of the main universities in Central Russia, located in the city of Voronezh. The university was established in 1918 by professors evacuated from the University of Tartu in Estonia. The university has 18 faculties ...

from 1934 to 1941. He taught at the

Moscow State University M. V. Lomonosov Moscow State University (MSU; russian: Московский государственный университет имени М. В. Ломоносова) is a public research university in Moscow, Russia and the most prestigious ...

since 1946.

Aleksei Pogorelov Aleksei Vasil'evich Pogorelov (russian: Алексе́й Васи́льевич Погоре́лов, ua, Олексі́й Васи́льович Погорє́лов; March 2, 1919 – December 17, 2002), was a Soviet and Ukrainian ...

was one of his students there. He received the

Lobachevsky Prize The Lobachevsky Prize, awarded by the Russian Academy of Sciences, and the Lobachevsky Medal, awarded by the Kazan State University, are mathematical awards in honor of Nikolai Ivanovich Lobachevsky. History The Lobachevsky Prize was established ...

in 1951 and Lenin Prize in 1966. He was an invited plenary speaker at the International Congress of Mathematicians in

, 1966. He became a corresponding member of the

Academy of Sciences of the Soviet Union The Academy of Sciences of the Soviet Union was the highest scientific institution of the Soviet Union from 1925 to 1991, uniting the country's leading scientists, subordinated directly to the Council of Ministers of the Soviet Union (until 1946 ...

in 1979.

References

* A. D. Aleksandrov, S. P. Novikov, A. V. Pogorelov, È. G. Poznyak, P. K. Rashevskiǐ, È. R. Rozendorn, I. Kh. Sabitov, S. B. Stechkin, "Obituary: Nikolai Vladimirovich Yefimov" (in Russian), ''Uspekhi Mat. Nauk'' 38:5 (1983), 111–117.

External links

*
''A Brief Course in Analytic Geometry''
downloadable from Internet Archive {{DEFAULTSORT:Yefimov, Nikolai 1910 births 1982 deaths 20th-century Russian mathematicians People from Orenburg Corresponding Members of the USSR Academy of Sciences Moscow State University faculty Southern Federal University alumni Lenin Prize winners Recipients of the Order of the Red Banner of Labour Differential geometers Russian educators Russian mathematicians Soviet educators Soviet mathematicians