He is known for his sums, which partition an interval into subintervals on which a function is multiplied by the length of the interval.
The Bianchi identity is satisfied by his namesake curvature tensor, and his namesake surfaces are used to define functions of a complex variable, such as the logarithm, which are multi-valued. His namesake geometry deals with smooth spaces on which one can measure distance, and was used by Einstein to develop general relativity. His famously unproven hypothesis deals with the so-called zeta function and relates to the distribution of prime numbers. He is known for his sums, which partition an interval into subintervals on which a function is multiplied by the length of the interval. For 10 points, who is this mathematician who gives his name to the simplest way of defining the definite integral?
The Bianchi identity is satisfied by his namesake curvature tensor, and his namesake surfaces are used to define functions of a complex variable, such as the logarithm, which are multi-valued.
Bernhard {Riemann}