Élie Cartan
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Élie Joseph Cartan was an influential French mathematician who did fundamental work in the theory of Lie groups, differential systems, and differential geometry. He also made significant contributions
Professor Élie Joseph Cartan
Sophus Lie
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Marius Sophus Lie was a Norwegian mathematician. He largely created the theory of continuous symmetry and applied it to the study of geometry and differential equations. He also made substantial contr
Élie Cartan
…sergeant. For the next two years (1892–1894) Cartan returned to ENS and, following the advice of his classmate Arthur Tresse (1868–1958) who studied under Sophus Lie in the years 1888–1889, worked on the subject of classification of simple Lie groups, which was started by Wilhelm Killing. In 1892 Lie came to Paris…
Lie in 1896
1888 copy of "Theorie der Transformationsgruppen," volume I
Title page to "Theorie der Transformationsgruppen"
Preface to "Theorie der Transformationsgruppen"