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单词 Riemann surface
释义 Riemann surface
 Math.
 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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