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arXiv 0811.2482math.GRmath.GTmath.NT
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计算算术格和算术曲面

Counting arithmetic lattices and surfaces

Mikhail Belolipetsky, Tsachik Gelander, Alex Lubotzky, Aner Shalev

摘要:

给出了单李群$H$中余体积至多为$x$的算术格$Γ$的个数$AL_H(x)$的估计.特别地,我们得到了体积至多为$x$的算术3-流形个数的第一个具体估计。我们的主要结果是经典的情况下$H=PSL(2,R)$,我们计算的极限时,$x\to\infty$的$\log AL_H(x) / x\log x$。证明使用几种不同的技术:几何(界定的数量生成器的$Γ$作为其covume的函数),数论(界定的数量最大的这样的$Γ$)和尖锐的估计的特征值的对称群(界定的子群增长的$Γ$)。

英文摘要:

We give estimates on the number $AL_H(x)$ of arithmetic lattices $Γ$ of covolume at most $x$ in a simple Lie group $H$. In particular, we obtain a first concrete estimate on the number of arithmetic 3-manifolds of volume at most $x$. Our main result is for the classical case $H=PSL(2,R)$ where we compute the limit of $\log AL_H(x) / x\log x$ when $x\to\infty$. The proofs use several different techniques: geometric (bounding the number of generators of $Γ$ as a function of its covolume), number theoretic (bounding the number of maximal such $Γ$) and sharp estimates on the character values of the symmetric groups (to bound the subgroup growth of $Γ$).

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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