born April 29, 1854, Nancy, France
died July 17, 1912, Paris
French mathematician, theoretical astronomer, and philosopher of science.
Born into a distinguished family of civil servants (see differential equation s (1879), then joined the University of Paris (1881), where he remained the rest of his life. Working in celestial mechanics and mathematical analysis, he independently obtained many of {{link=Einstein, Albert">Albert Einstein 's results relating to the special theory of relativity and published them in a paper on the dynamics of the electron (1906). He later wrote books for the general public on the meaning and importance of science and mathematics.
Henri Poincaré, 1909.
H. Roger-Viollet