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arXiv 0910.2876math.GTmath.MG
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无穷小柔性三维双曲锥流形的例子

Examples of infinitesimally flexible 3--dimensional hyperbolic cone-manifolds

Ivan Izmestiev

摘要:

Weiss和Mazzeo和Montcouquiol最近分别证明了所有锥角小于$2π$的三维双曲锥流形(可能有顶点)是无穷小刚性的。另一方面,Casson在1998年提供了一个无穷柔性锥流形的例子,其中一些锥角大于$2π$。本文构造了无穷小柔性锥流形的几个新例子。其基本思想是:一个无穷小柔性多面体的对偶是一个无穷小柔性锥流形。通过一些额外的努力,我们能够构造无穷小柔性锥流形没有顶点和所有锥角大于$2π$。

英文摘要:

Weiss and, independently, Mazzeo and Montcouquiol recently proved that a 3--dimensional hyperbolic cone-manifold (possibly with vertices) with all cone angles less than $2π$ is infinitesimally rigid. On the other hand, Casson provided 1998 an example of an infinitesimally flexible cone-manifold with some of the cone angles larger than $2π$. In this paper several new examples of infinitesimally flexible cone-manifolds are constructed. The basic idea is that the double of an infinitesimally flexible polyhedron is an infinitesimally flexible cone-manifold. With some additional effort, we are able to construct infinitesimally flexible cone-manifolds without vertices and with all cone angles larger than $2π$.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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