# Riemann surface

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Riemann surface
a geometric representation of a function of a complex variable in which a multiple-valued function is depicted as a single-valued function on several planes, the planes being connected at some of the points at which the function takes on more than one value. Cf. branch cut, branch point.
[1890-95; named after G. F. B. RIEMANN]

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Universalium. 2010.

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