In the meantime Klein was somewhat concerned about staying in this country (O'Conner and Robertson). Felix Klein worked for the military for a short time. Felix Klein served as a systematic medical service, but in 1871 he played a role as a lecturer in Göttingen (O'Connor and Robertson). When Felix Klein was appointed Professor Erlangen, he backed Krebs. Mr. Krebs told that Felix Klein believed it would be the next major mathematician of the time (O'Connor and Robertson).
Felix Klein, complete Christian Felix Klein, (April 25, 1849, Dusseldorf, Prussia - June 22, 1925, Göttingen, Germany), his unification of geometry that idea is known as the Erlanger project A study of invariant spatial properties under a certain set of transformations has a profound influence on mathematical development. As a student at the University of Bonn (Ph.D., 1868), Klein is working closely with physicists and geometers JuliusPlücker (1801-68). After Plucker's death, he cooperated with geometry Alfred Klebucci (1833-72) who was the head of mathematics department of the University of Göttingen. According to Krebsch's proposal, Klein was appointed professor of mathematics at Erlangen University (1872-75) where he published his view in the Erlanger project. These ideas reflect close collaboration with Norwegian mathematician Sophus Lie who met in Berlin in 1869.
Christian Felix Klein (25 April 1849 - 22 June 1925) is a German mathematician and mathematical educator with group theory, complex analysis, non-Euclidean geometry, and theories of geometry and group theory. Connections are known for their work. His 1872 Erlangen program classified geometric shapes by its basic symmetry group, but had a major impact on the majority of mathematics at the time. Felix Klein was born in Dusseldorf on April 25, 1849, was born in Prussia's parents; his father, Caspar Klein (1809-1889), was a Prussian government official stationed in the Rhein province. . Klein's mother is Sophie Elysée Klein (1819 - 1890, maiden Kaiser). He joined the stadium in Düsseldorf and later studied mathematics and physics at Bonn University (1865-1866) and aimed to become a physicist. Back then, JuliusPlücker served as chairman of mathematics and experimental physics at Bonn, but when Klein became his assistant, in 1866 Plücker's interest was geometry.