Rodion Kuzmin

Rodion Ossijewitsch Kuzmin (Russian Родион Осиевич Кузьмин; * 10 Novemberjul / November 22 1891greg in Vitebsk, .. † 24 March 1949 in Leningrad) was a Soviet mathematician.

Life and work

Kuzmin visited a school in Vitebsk and studied from 1910 physics and mathematics at the University of Saint Petersburg, 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 in 1921 became a professor. After returning to Saint Petersburg in 1922, he taught at several universities and was a professor at the Polytechnic Institute. In 1928 he proved a theorem on the distribution of the continued fraction denominator of almost all real numbers, which goes back to Carl Friedrich Gauss ( now called the Gauss - Kuzmin ), 1930, he extended a criterion of Alexander Gelfond for the transcendence of a number ( which, for example, the transcendence was proved by 2 √ 2), thus contributing to the solution of Hilbert's seventh problem. From 1930 headed the Kuzmin Institute of Hydraulics ( part of the Mathematical Institute of the Polytechnic University ), and after a reorganization, he became in 1934 professor at the Mathematical Institute, headed by Sergei Bernstein.

During the siege of Leningrad in 1942, the family was evacuated to the region of Omsk, 1943 Bijsk and 1944 by Ramon in Voronezh. During this time he edited the collection of problems for higher mathematics (based on the earlier version of Nikolai Günter ).

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

He was from 1946 a corresponding member of the Soviet Academy of Sciences. Kuzmin wrote more than 50 mathematical research papers.

Writings

• With NM Günter: Aufgabensammlung for Higher Mathematics ( 2 volumes), German Academic Publishers, Berlin, 1957 ( Russian original in 1946, an earlier edition of NM Günter dates from the year 1909)