Complex manifold with holomorphic charts.

Conjecture about zeros of zeta-function.

Mathematician known for complex analysis.

Area under curve, limit sum.

(mathematics) A certain kind of approximation of an integral by a finite sum that is calculated by dividing the interval of integration into smaller sub-intervals and summing sample values of the integrand inside those sub-intervals multiplied by their lengths.

Extended complex plane with infinity.

Curved space defined by metric.