Polyhedra inscribed in a quadric
Polyhedra inscribed in a quadric
复制标题
内接于二次曲面的多面体
DOI:
10.1007/s00222-020-00948-9
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发表时间:
2020
影响因子:
3.1
通讯作者:
Schlenker, Jean-Marc
中科院分区:
文献类型:
--
作者:
Danciger, Jeffrey;Maloni, Sara;Schlenker, Jean-Marc
We study convex polyhedra in three-space that are inscribed in a quadric surface. Up to projective transformations, there are three such surfaces: the sphere, the hyperboloid, and the cylinder. Our main result is that a planar graphis realized as the 1-skeleton of a polyhedron inscribed in the hyperboloid or cylinder if and only ifis realized as the 1-skeleton of a polyhedron inscribed in the sphere andadmits a Hamiltonian cycle. This answers a question asked by Steiner in 1832. Rivin characterized convex polyhedra inscribed in the sphere by studying the geometry of ideal polyhedra in hyperbolic space. We study the case of the hyperboloid and the cylinder by parameterizing the space of convex ideal polyhedra in anti-de Sitter geometry and in half-pipe geometry. Just as the cylinder can be seen as a degeneration of the sphere and the hyperboloid, half-pipe geometry is naturally a limit of both hyperbolic and anti-de Sitter geometry. We promote a unified point of view to the study of the three cases throughout.
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DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
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2005
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影响因子:
2
作者:
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