Riemann surface

Etymology
From Bernhard Riemann, German mathematician.

Noun

 * 1)  A one-dimensional complex manifold; a generalization of the complex plane.

Translations

 * Chinese:
 * Mandarin:
 * Finnish:
 * French:
 * German: riemannsche Fläche
 * Japanese: リーマン面
 * Russian: Ри́манова пове́рхность, ри́манова пове́рхность
 * Swedish: Riemannyta