Eugène Cosserat

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Eugène Maurice Pierre Cosserat (born March 4, 1866 in Amiens , † May 31, 1931 in Toulouse ) was a French mathematician and astronomer.

Cosserat was the younger brother of François Cosserat and had another brother, Lucien Constant Cosserat. He went to school in Amiens and studied from 1883 at the École normal supérieure . His teachers included Paul Appell , Gaston Darboux , Émile Picard and Gabriel Koenigs and his fellow students Jacques Hadamard and Paul Painlevé . After graduating in 1886 he was an assistant at the Toulouse Observatory and received his doctorate in mathematics at the Sorbonne under Darboux in 1889. In his dissertation, he expanded the principle of creating space according to Julius Plücker using infinitesimal straight lines to infinitesimal circles. He taught mathematics at the Faculté des Sciences in Toulouse, where he succeeded Thomas Stieltjes as professor in 1896 . In 1908 he received the chair of astronomy in Toulouse and became director of the observatory as successor to Benjamin Baillaud , who became director of the Paris observatory.

In 1911 he became a corresponding and in 1919 a full member of the Académie des sciences . He was also a member of the Bureau de Longitude. In 1889 he received the Poncelet Prize.

As an astronomer, he observed double stars, minor planets and comets, the moons of Jupiter and Saturn and the proper motion of stars.

He is best known for his work on elasticity theory , partly in collaboration with his brother Francois. The Cosserat continuum is named after them. After the death of his brother in 1914, he gave up working with mechanics. Her work was recognized for its importance only decades after her death, during her lifetime only by a few, including Henri Poincaré , Émile Picard and Élie Cartan . In Germany they were received early by Karl Heun .

He was co-editor of the Annales de la Faculté des Sciences de Toulouse. He also translated works from English and Russian for his magazine. He worked for the French edition of the Encyclopedia of Mathematical Sciences , for which he translated and edited articles from German.

Fonts

  • with F. Cosserat: Théorie de l'élasticité 1896
  • with F. Cosserat: Théorie des corps déformables, Paris: Hermann 1909

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personal data
SURNAME Cosserat, Eugène
ALTERNATIVE NAMES Cosserat, Eugène Maurice Pierre
BRIEF DESCRIPTION French mathematician and astronomer
DATE OF BIRTH March 4, 1866
PLACE OF BIRTH Amiens
DATE OF DEATH May 31, 1931
Place of death Toulouse