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arXiv 1407.3158math.GR
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近似子群与超强近似

Approximate subgroups and super-strong approximation

Emmanuel Breuillard

摘要:

本文综述了薄群的近似子群和超强近似的一些最新进展,描述了建立有限群谱间隙的Bourgain-Gamburd方法,并证明了有限域上半单代数群的近似子群的分类.利用随机矩阵乘积证明了模$p$代数的超强逼近,并给出了强逼近的一个定量形式.最后给出了群筛的一些应用。

英文摘要:

Surveying some of the recent developments on approximate subgroups and super-strong approximation for thin groups, we describe the Bourgain-Gamburd method for establishing spectral gaps for finite groups and the proof of the classification of approximate subgroups of semisimple algebraic groups over finite fields. We then give a proof of the super-strong approximation for mod $p$ quotients via random matrix products and a quantitative version of strong approximation. Some applications to the group sieve are also presented.

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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