Photo courtesy Yerkes Observatory, University of Chicago | ||

29 April 1854 |
1911 Bruce Medalist |
17 July 1912 |

Henri Poincaré was educated at **l'École Polytechnique** and **l'École des Mines**. He was professor of mathematics at the University of Paris from 1881 to 1912. One of the greatest mathematicians of all time, he made significant advances in function theory, algebraic functions, algebraic geometry, algebra, number theory, algebraic topology, and above all, differential equations. He revolutionized celestial mechanics, inaugurating a rigorous treatment and initiating studies of the stability of the solar system. He determined the shape of a rotating fluid subject only to gravity. He wrote extensively on the philosophy of science, worked in mathematical physics, and developed many of the ideas and equations of the **special theory of relativity** independently of **Albert Einstein** and **Hendrik A. Lorentz**. Poincaré is often called the father of **chaos theory**. He wrote nearly 500 papers and numerous books, many of them popular and a substantial number **still in print**.

Morse, Fremont, *PASP* **23**, 73-84 (1911).

Royal Astronomical Society, Gold medal, 1900, presented by G.H. Darwin, *MNRAS* **60**, 406-415 (1900).

Royal Society of London, Sylvester Medal, 1901.

Académie des Sciences, President, 1906.

l’Académie française [in French].

Anonymous, “Scientific Worthies,” *Nature* **90**, 353-356 (1912).

Appell, P., *Henri Poincaré* (Paris, 1925) [in French].

Dantzig, Tobias, *Henri Poincaré* (Scribner’s, NY, 1954).

Dieudonné, Jean, *Dictionary of Scientific Biography ***11**, 51-61.

The Exploratorium.

Gray, Jeremy, *Henri Poincaré: A Scientific Biography* (Princeton Univ. Press, 2013).

Hoffman, Mike, Notable Mathematicians.

Lahanas, M., Physics [includes photo]

Lamontagne, Yann, PlanetMath.org

Le Laboratoire de Philosophie et d’Histoire des Sciences Archives Henri
Poincaré, Archives H. Poincaré [Timeline, in French].

Lebon, Ernest, *Notice sur Henri Poincaré, *in Poincaré, H., *Leçons sur les Hypotheses Cosmogoniques*, 2nd ed. (Librairie Scientifique A. Hermann & Fils, Paris, 1913)

Lebon, Ernest, *Henri Poincaré: Biographie, Bibliographie Analytique des Écrit* (GauthierVillars, Paris, 1912).

Mawhin, Jean, “Henri Poincaré. A Life in the Service of Science,” Lecture presented at the Poincaré Symposium in Brussels, 8-9 October 2004.

Murzi, Mauro, The Internet Encyclopedia of Philosophy

O’Connor, J.J. & E.F. Robertson, The MacTutor History of Mathematics archive [includes 7 photos].

PlanetMath.org

Resonance Publications,The world of Mathematics

Tenn, Joseph S., “Henri Poincaré: The Ninth Bruce Medalist,” Mercury ** 20**, 4, 111 (1991).

Toulouse, E., *Henri Poincaré* (Paris, 1910) [in French].

Trachet, Tim, *Biographical Encyclopedia of Astronomers* (Springer, NY, 2007), pp. 921-22.

University of Maryland

Verhulst, Ferdinand, *Henri Poincaré: Impatient Genius* (Springer, 2012).

Washington Area Chaos Group.

**More biographical materials**

**And still more**

DeLury, Alfred T., *JRASC* **6**, 309-21 (1912).

Lebon, Ernest, *PASP* **24**, 260-65 (1912).

Anonymous, *Observatory *** 35**, 309-10.

Sarton, George, *Bulletin de la Société belge d’Astronomie ***XXXIV**, 1-11, 37-48 (1913) (pdf).

AIP Center for History of Physics

Dibner Library (another)

Hellenica

Le Laboratoire de Philosophie et d’Histoire des Sciences Archives Henri
Poincaré, Galerie photographique [a very large collection]

Library of Congress

Miller, Jeff, Images of Mathematicians on Postage Stamps

Lunar crater Poincaré

Minor Planet #2021 Poincaré

Université Henri Poincaré

The Poincaré Conjecture

Please send comments, additions, corrections, and questions to joe.tenn@sonoma.edu |
JST 2015-11-11 |