Umbilic torus
The umbilic torus or umbilic bracelet is a single-edged 3-dimensional shape. The lone edge goes three times around the ring before returning to the starting point. The shape also has a single external face. A cross section of the surface forms a deltoid. The torus is defined by the following set of parametric equations. John Robinson created a sculpture Eternity based on the shape in 1989, this had a triangular cross-section rather than a deltoid of a true Umbilic bracelet. This appeared on the cover of Geometric Differentiation by Ian R. Porteous.
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Umbilic torus
The umbilic torus or umbilic bracelet is a single-edged 3-dimensional shape. The lone edge goes three times around the ring before returning to the starting point. The shape also has a single external face. A cross section of the surface forms a deltoid. The torus is defined by the following set of parametric equations. John Robinson created a sculpture Eternity based on the shape in 1989, this had a triangular cross-section rather than a deltoid of a true Umbilic bracelet. This appeared on the cover of Geometric Differentiation by Ian R. Porteous.
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The umbilic torus or umbilic b ...... completed in September, 2012.
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アンビリック・トーラスもしくはアンビリック・ブレスレットは、 ...... 。 トーラスは、次のパラメトリック方程式によって定義される。
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The umbilic torus or umbilic b ...... rentiation by Ian R. Porteous.
@en
アンビリック・トーラスもしくはアンビリック・ブレスレットは、 ...... 。 トーラスは、次のパラメトリック方程式によって定義される。
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Umbilic torus
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アンビリック・トーラス
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