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In the theory of surfaces, a triple torus refers to a smooth closed surface with three holes, or, in other words, a surface of genus three. It can be obtained by attaching three handles to a sphere or by gluing (taking the connected sum) of three tori. Image:Sphere with three handles.png|A sphere with three handles Image:Triple torus array.png|The connected sum of three tori Image:Triple torus illustration.png|Pretzel-style triple torus File:Dodecagon with opposite faces identified.svg|Dodecagon with opposite edges identified File:14-gon with opposite faces identified.svg|Tetradecagon with opposite edges identified ==Klein quartic== An example of a genus-3 Riemann surface is the Klein quartic. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Triple torus」の詳細全文を読む スポンサード リンク
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