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arXiv 0912.4975math.NTmath.GRmath.PR
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Cohen-Lenstra启发式:方法和结果

The Cohen-Lenstra Heuristic: Methodology and Results

Johannes Lengler

摘要:

在数论中,人们致力于研究有限交换$p$ -群集合上的Cohen-Lenstra概率测度。另一方面,群论学家已经研究了所有划分的集合上的概率测度,该概率测度是由$\FF_p$上随机选择的$n\times n$ -矩阵包含在与该划分相关联的共轭类中的概率引起的,对于$n \to \infty$。本文证明了这两种概率测度是相同的。因此,大量的结果可以从每一种理论转移到另一种理论。该文件包含一个调查的已知方法来研究的概率测度和有关的结果,已经获得了迄今为止,从两个社区。

英文摘要:

In number theory, great efforts have been undertaken to study the Cohen-Lenstra probability measure on the set of all finite abelian $p$-groups. On the other hand, group theorists have studied a probability measure on the set of all partitions induced by the probability that a randomly chosen $n\times n$-matrix over $\FF_p$ is contained in a conjucagy class associated with this partitions, for $n \to \infty$. This paper shows that both probability measures are identical. As a consequence, a multitide of results can be transferred from each theory to the other one. The paper contains a survey about the known methods to study the probability measure and about the results that have been obtained so far, from both communities.

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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