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Born Jan. 5, 1884, in Auch, Gers Department. French mathematician. Member of the Paris Academy of Sciences (1942) and its president (1962).
In 1922, Denjoy became a professor at the University of Paris and president of the French mathematical society. His major works deal with the theory of functions of real variables. He provided a complete solution to the classical problem of the primitive function, for which he introduced a new concept of the integral, which bears his name. In 1971 he became a foreign member of the Academy of Sciences of the USSR and received the M. V. Lomonosov gold medal.