Rodion Ossievich Kuzmin

Rodion Ossijewitsch Kusmin ( Russian Родион Осиевич Кузьмин ; * November 10th ^July / November 22nd,  1891 ^greg. In Vitebsk ; † March 24th 1949 in Leningrad ) was a Soviet mathematician.

Rodion Kuzmin (1926)

Life

Kuzmin attended a school in Vitebsk and studied physics and mathematics at the University of Saint Petersburg from 1910 , where he graduated in 1916. In the same year he married Elisabeth Svyatogor. In 1918 the family moved to Perm , where Kuzmin taught at the university and became a professor in 1921. After returning to Saint Petersburg in 1922, he taught at several universities and became a professor at the Polytechnic Institute . In 1928 he proved a theorem about the distribution of the continued fraction denominators of almost all real numbers, which goes back to Carl Friedrich Gauß (today called the Gauß-Kusmin theorem ), in 1930 he expanded a method by Alexander Gelfond for the determination of the transcendence of a number, whereby for example the transcendence , with an algebraic number and a non-square natural number, specifically proven by 2 ^√2 . The latter was one of the examples given by David Hilbert in Hilbert's seventh problem , which Kusmin thus helped solve. From 1930 Kuzmin headed the Institute of Hydraulics (part of the Mathematical Institute of the Polytechnic University), and after a reorganization he became a professor at the Mathematical Institute in 1934, which was headed by Sergei Bernstein . ${\displaystyle \alpha ^{\sqrt {d}}}$ ${\displaystyle \alpha }$ ${\displaystyle d}$

During the siege of Leningrad , the family was evacuated to the Omsk area in 1942 , to Biysk in 1943 and to Ramon near Voronezh in 1944 . During this time he revised the collection of exercises on higher mathematics (based on the earlier version by Nikolai Günter ).

In February 1945 Kuzmin returned to Leningrad and headed the Mathematical Institute of the Polytechnic University.

From 1946 he was a corresponding member of the Soviet Academy of Sciences . Kuzmin wrote more than 50 mathematical papers.

Fonts

• with NM Günter : Collection of exercises on higher mathematics. 2 volumes (= university books for mathematics . Vol. 32 and 33). Deutscher Verlag der Wissenschaften, Berlin 1957 (Russian original 1946, an earlier edition by NM Günter dates from 1909)

literature

• BA Wenkow, IP Natanson: Родион Осиевич Кузьмин (1891–1949) (некролог) (obituary), Успехи математических наук 4, 1949, pp. 148–155 (Russian)
• WI Smirnow : Родион Осиевич Кузьмин 1891–1949 (некролог) (obituary), Известия Академии наук СССР серия математическ8 (Russian) 385, 193849 (p.

Web links

• Кузьмин Родион Осиевич (1891-1949) - overview with photo (Russian);

Individual evidence

1. ↑ A list of publications is contained in the obituary by BA Wenkow and IP Natanson. Almost all papers are in Russian, a large number of which have a summary in French (see Yearbook on the Progress of Mathematics , online ).
2. ↑ See web links, О задачнике Н. М. Гюнтера и Р. О. Кузьмина - History of the collection of exercises (Russian)