GYUNTER

RUSSIA (see also List of Individuals)

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17.12.1871 Saint Petersburg/RU - 4.5.1941 Leningrad/RU

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Nikolai Maksimovich Gyunter graduated from the Saint Petersburg University in 1894 and there gained the title doctor of sciences in 1915. He was a professor of his University from 1904 during all his professional career. As an outstanding Russian mathematician, he worked in ordinary differential equations and in mathematical physics, especially in the potential flow theory. Gyunter authored popular books in mathematics. He was a Corresponding Member of the USSR Academy of Sciences from 1922 and president of the Leningrad Mathematical Society from 1923 to 1930. Gyunter was awarded in 1927 a governmental prize for a series of papers where he proved the existence of solutions of the equations of hydrodynamics under few restrictions. Gyunter was a leader of the Leningrad mathematicians for a long time.

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Gyunter's early works were devoted to the general theory of differential equations, both ordinary and partial. He applied his findings to the solution of the equations of hydrodynamics. Gyunter was also a promoter of the method of characteristics to solve the hyperbolic type equations, such as the system introduced by Adhémar Barré de Saint-Venant (1797-1886). A large cycle of his works dealt with various questions of mathematical physics. He was the first to provide a rigorous and systematic exposition of the contemporary theory of potential in 1934. Gyunter made broad use of the ideas and the methods of the theory of functions of a real variable and the functional analysis. He was solving a number of problems in mathematical physics.

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_{Anonymous (1975). Gyunter, Nikolai Maksimovich. Great Soviet encyclopedia 7: 234-235.}

_{MacMillan: New York. Gyunter, N.M. (1946). V.A. Steklov and mathematical physics. Uspechi matematičeskich}

_{NAUK 1(3/4): 23-43 (in Russian).}

_{Gyunter, N.M. (1957). Aufgabensammlung zur höheren Mathematik, translated by R.O. Kusmin. Deutscher Verlag der Wissenschaften: Berlin, 10th ed.}

_{Gyunter, N.M. (1968). Potential theory and its applications to basic problems of mathematical physics, translated by J.R. Schulenberger. Ungar: New York.}

_{Smirnov, V.I., Sobolev, S.L. (1948). N.M. Gyunter. Uchenye zapiski Leningradskogo Gosudarstvennogo Universiteta, Serya matematichesshikh NAUK 15, with bibliography. http://www.mathsoc.spb.ru/pantheon/guenter/index.html P}