# Felix Klein

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**Christian Felix Klein** (25 April 1849 – 22 June 1925) was a German mathematician and mathematics educator, known for his work in group theory, complex analysis, non-Euclidean geometry, and on the connections between geometry and group theory.

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## Quotes about Felix Klein[edit]

- From outside Germany, Klein epitomized the cultured German elite. Self-assured, handsome, highly educated, and married to Hegel's granddaughter, he had all the perquisites of a German professor with a devoted cadre of students. Within Germany, however, there was a split between the school of analysis typified by the great and influential German mathematician Karl Weierstrass, and the proponents of more geometric methods associated with Riemann. Klein had identified himself, and his students, with the latter, and thereby contributed to widening the rift—for Klein's enthusiasm was the sort that divides as much as it unifies.
- Donal O'Shea (30 October 2008).
*The Poincaré Conjecture: In Search of the Shape of the Universe*. Penguin Books Limited. p. 196. ISBN 978-0-14-190034-6.

- Donal O'Shea (30 October 2008).