Riemann, (Georg Friedrich) Bernhard[reeman]
Mathematician, born in Breselenz, Germany. He studied at Göttingen and Berlin universities, and became professor of mathematics at Göttingen (1859). His early work was on the theory of functions, but he is best remembered for his development of non-Euclidian geometry, important in modern physics and relativity theory. His profound conjecture (the Riemann hypothesis) about the behaviour of the zeta (or Riemann) function, which he showed determines the distribution of the prime numbers, has resisted proof since its publication in 1857.