1901-1955 History of Mathematics Timeline By arielrobinson Mar 6, 1901 Elie Cartan developed the exterior derivative Period: Mar 6, 1901 to May 8, 1955 History of Mathematics (1901-1955) Source Jun 19, 1903 Edmund Georg Hermann Landau gave a simpler proof of the prime number theorem. Jan 1, 1908 Ernst Zermelo axiomized set theory. Sep 17, 1912 Josip Plemelj published the simplified proof of Fermat's Last Theorem for exponent n = 5. Nov 30, 1919 Viggo Brun defined Brun's constant, B2 for twin primes. Apr 12, 1928 John von Neumann began devising the principles of game theory and proved the minimax theorem. Oct 4, 1931 Kurt Gödel proved his incompleteness theorem. May 16, 1942 G.C. Danielson and Cornelius Lanczos developed a Fast Fourier Transform algorithm. Jul 8, 1943 Kenneth Levenberg proposed a method for nonlinear least squares fitting. Feb 15, 1945 Saunders Mac Lane and Samuel Eilenberg started category theory. Aug 23, 1948 John von Neumann computed π to 2,037 decimal places using ENIAC. May 8, 1955 H. S. M. Coxeter et al. published the complete list of uniform polyhedron.