Klein, Felix (1849-1925) -- from Eric Weisstein's World of Scientific Biography

German mathematician who began his career as Plücker's assistant at Bonn. Klein studied analytic geometry, $Eric Weisstein's World of Math$ describing geometry as the study of properties of figures which remain invariant under a group $Eric Weisstein's World of Math$ of transformations. $Eric Weisstein's World of Math$ He systemized non-Euclidean geometry $Eric Weisstein's World of Math$ and wrote a book on the icosahedron $Eric Weisstein's World of Math$ in 1884. He also worked on the development of group theory $Eric Weisstein's World of Math$ and collaborated with Lie in Erlanger Programm. He also is known in topology $Eric Weisstein's World of Math$ for the one-sided Klein bottle. $Eric Weisstein's World of Math$ In addition to all his other work, he found time to write a classic history of mathematics.

Fricke, R. and Klein, F. Vorlesungen über die Theorie der automorphen Functionen, 2 vols. Leipzig: B. G. Teubner, 1897-1912.

Klein, F. Arithmetic, Algebra, Analysis. New York: Dover, n.d.

Klein, F. Elementary Mathematics from an Advanced Standpoint: Arithmetic, Algebra, Analysis. New York: Dover.

Klein, F. Famous Problems of Elementary Geometry. New York: Chelsea, 1956.

Klein, F. Gesammelte Mathematische Abhandlungen. Berlin: Springer-Verlag, 1973.

Klein, F. Lectures on the Icosahedron and the Solution of Equations of the Fifth Degree, 2nd and rev. ed. New York: Dover, 1956.

Klein, F. The Mathematical Theory of the Top. New York: Scribner's, 1897.

Klein, F. and Sommerfeld, A. Über die Theorie des Kreisels, 4 vols. New York: Johnson, 1965.

Klein, F. Vorlesungen über die hypergeometrische Funktion. Berlin: J. Springer, 1933.

Klein, F. Vorlesungen über die Theorie der elliptischen Modulfunctionen, 2 vols. Leipzig: B. G. Teubner, 1890-92.