Noun
pioneer of non-Euclidean geometry (1826-1866)
Source: WordNetBy 1854, Bernhard Riemann 's Habilitationsschrift had firmly established the geometry of higher dimensions, and thus the concept of n-dimensional polytopes was made acceptable. Source: Internet
Elliptic geometry was developed later in the 19th century by the German mathematician Bernhard Riemann ; here no parallel can be found and the angles in a triangle add up to more than 180°. Source: Internet
Bernhard Riemann used these ideas to give a precise definition of the integral. Source: Internet
The theorem was proved independently by Jacques Hadamard and Charles Jean de la Vallée-Poussin in 1896 using ideas introduced by Bernhard Riemann (in particular, the Riemann zeta function ). Source: Internet