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Chen–Gackstatter surface : ウィキペディア英語版
Chen–Gackstatter surface

In differential geometry, the Chen–Gackstatter surface family (or the Chen–Gackstatter–Thayer surface family) is a family of minimal surfaces that generalize the Enneper surface by adding handles, giving it nonzero topological genus.
They are not embedded, and have Enneper-like ends. The members M_ of the family are indexed by the number of extra handles ''i'' and the winding number of the Enneper end; the total genus is ''ij'' and the total Gaussian curvature is -4\pi(i+1)j. It has been shown that M_ is the only genus one orientable complete minimal surface of total curvature -8\pi.〔.〕
It has been conjectured that continuing to add handles to the surfaces will in the limit converge to the Scherk's second surface (for ''j'' = 1) or the saddle tower family for ''j'' > 1.〔
==References==


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