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arXiv 1707.06708math.NT
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圆填充的局部-整体原理

Local-global principles in circle packings

Elena Fuchs, Katherine E. Stange, Xin Zhang

摘要:

我们推广工作的Bourgain-Kontorovich和张,证明了一个几乎本地到全球性质的曲率的某些圆包装,一大类Kleinian群。具体而言,我们关联在一个自然的方式,一个无限家庭的积分包装的圆的任何Kleinian群$\mathcal A\leq\textrm{PSL}_2(K)$满足一定的条件,其中$K$是一个虚二次域,并表明,曲率的圆在任何这样的包装满足几乎本地到全球的原则。在证明这一点的一个关键因素是,$\mathcal A$具有谱隙属性,我们证明任何无穷余体积,几何有限的,Zebraki密集Kleinian群在$\textrm{PSL}_2(\mathcal{O}_K)$包含Zebraki密集子群的$\textrm{PSL}_2(\mathbb{Z})$。

英文摘要:

We generalize work of Bourgain-Kontorovich and Zhang, proving an almost local-to-global property for the curvatures of certain circle packings, to a large class of Kleinian groups. Specifically, we associate in a natural way an infinite family of integral packings of circles to any Kleinian group $\mathcal A\leq\textrm{PSL}_2(K)$ satisfying certain conditions, where $K$ is an imaginary quadratic field, and show that the curvatures of the circles in any such packing satisfy an almost local-to-global principle. A key ingredient in the proof of this is that $\mathcal A$ possesses a spectral gap property, which we prove for any infinite-covolume, geometrically finite, Zariski dense Kleinian group in $\textrm{PSL}_2(\mathcal{O}_K)$ containing a Zariski dense subgroup of $\textrm{PSL}_2(\mathbb{Z})$.

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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