Felix Klein

Felix Klein
Born	(1849-04-25)25 April 1849 Düsseldorf, Rhine, Prussia, Germany
Died	22 June 1925(1925-06-22) (aged 76) Göttingen, Hanover, Prussia, Germany
Alma mater	University of Bonn
Known for	Erlangen program Klein bottle Beltrami–Klein model Klein's Encyclopedia of Mathematical Sciences Kleinian group Klein four-group
Awards	De Morgan Medal (1893) Copley Medal (1912) Ackermann–Teubner Memorial Award (1914)
Scientific career
Fields	Mathematics
Institutions	Universität Erlangen Technische Hochschule München Universität Leipzig Georg-August-Universität Göttingen
Doctoral advisors	Julius Plücker and Rudolf Lipschitz
Doctoral students	List Ludwig Bieberbach Maxime Bôcher Oskar Bolza Max Brückner Frank Nelson Cole Friedrich Dingeldey Henry B. Fine Erwin Freundlich Robert Fricke Philipp Furtwängler Axel Harnack Mellen Haskell Adolf Hurwitz Edward Kasner Ferdinand von Lindemann Alexander Ostrowski Julio Rey Pastor Hermann Rothe Friedrich Schilling Virgil Snyder Edward Van Vleck Walther von Dyck Adolf Weiler Henry Seely White Alexander Witting Grace Chisholm Young
Other notable students	Edward Kasner

Christian Felix Klein (German: [klaɪn]; 25 April 1849 – 22 June 1925) was a German mathematician and mathematics educator, known for his work with group theory, complex analysis, non-Euclidean geometry, and on the associations between geometry and group theory. His 1872 Erlangen program, classifying geometries by their basic symmetry groups, was an influential synthesis of much of the mathematics of the time.