At fourteen Schmalfuss, the director of his school, decided that his pupil could learn no more from him and lent  him a copy of Legendre's Theory of Numbers, an 859 page work that he mastered in just six days.
At fourteen Schmalfuss, the director of his school, decided that his pupil could learn no more from him and lent  him a copy of Legendre's Theory of Numbers, an 859 page work that he mastered in just six days. In a  probationary essay on Dirichlet's condition for the representability of a function by its Fourier series he developed a  new and rigorous definition of the integral as an operator. FTP name this man who, when Gauss asked him to  discuss the foundations of geometry in a lecture, developed a consistent non- Euclidean elliptic geometry.
At fourteen Schmalfuss, the director of his school, decided that his pupil could learn no more from him and lent  him a copy of Legendre's Theory of Numbers, an 859 page work that he mastered in just six days.
Georg Friedrich Bernhard Riemann