A Height Gap Theorem For Finite Subsets Of GL_d(ar{Q}) and Non Amenable Subgroups

A Height Gap Theorem For Finite Subsets Of GL_d(ar{Q}) and Non Amenable Subgroups
复制标题

GL_d(ar{Q})有限子集和不服从子群的高度间隙定理

DOI:
--
复制
发表时间:
2008
期刊:
影响因子:
--
通讯作者:
E. Breuillard
E. Breuillard
中科院分区:
--
文献类型:
--
作者:
E. Breuillard

文献摘要

被引文献

相似文献

我们展示了一个全球的adelic模拟经典的马古利斯引理从双曲几何。本文在GL_{n}中引入了有限矩阵集F$的共轭不变归一化高度hat{h}(F)$(ar{Bbb{Q}})$,它是对称空间上最小位移的理想模拟。利用Bilu和Zhang关于小点的Galois轨道的等分布定理,我们证明了只要$F$生成$SL_{n}的非虚可解子群,$hat{h}(F)> n $(ar{Bbb{Q}}),$其中$n = n(n)>0$是绝对常数。
We show a global adelic analog of the classical Margulis Lemma from hyperbolic geometry. We introduce a conjugation invariant normalized height $hat{h}(F)$ of a finite set of matrices $F$ in $GL_{n}(ar{Bbb{Q}})$ which is the adelic analog of the minimal displacement on a symmetric space. We then show, making use of theorems of Bilu and Zhang on the equidistribution of Galois orbits of small points, that $hat{h}(F)>epsilon $ as soon as $F$ generates a non-virtually solvable subgroup of $SL_{n}(ar{Bbb{Q}}),$ where $epsilon =epsilon (n)>0$ is an absolute constant.