Fundamental domains in the Einstein Universe

Fundamental domains in the Einstein Universe
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爱因斯坦宇宙的基本领域

DOI:
10.1016/j.topol.2014.06.011
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发表时间:
2013
影响因子:
0.6
通讯作者:
R. Lareau
R. Lareau
中科院分区:
数学4区
文献类型:
--
作者:
Virginie Charette;Dominik Francoeur;R. Lareau

文献摘要

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我们将讨论三维爱因斯坦宇宙中离散群作用的基本域。它们将以弯曲曲面为界,弯曲曲面是在构建马古利斯时空时出现的曲面的共形紧化。我们将证明在三维爱因斯坦宇宙中存在两两不相交的弯曲曲面。作为应用,我们可以构造群在该空间的开子集上正确作用的显式例子。
We will discuss fundamental domains for actions of discrete groups on the 3-dimensional Einstein Universe. They will be bounded by crooked surfaces, which are conformal compactifications of surfaces that arise in the construction of Margulis spacetimes. We will show that there exist pairwise disjoint crooked surfaces in the 3-dimensional Einstein Universe. As an application, we can construct explicit examples of groups acting properly on an open subset of that space.