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arXiv 1505.04547math.PR
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带圈权的大随机置换的序

The order of large random permutations with cycle weights

Julia Storm, Dirk Zeindler

摘要:

$n$对象的置换$σ$的阶$O_n(σ)$是最小整数$k \geq 1$,使得$σ$的第$k$阶给出恒等式。一个显着的结果秩序的一致选择置换是由于埃尔德什和图兰谁证明在1965年,$\log O_n$满足中心极限定理。我们将这一结果推广到以前的论文中所谓的\textit{generalized Ewens measure}。本文建立了一个局部极限定理,并在某些附加矩条件下,得到了精确的大偏差估计。这些性质即使对于一致测度也是新的。此外,我们提供了精确的大偏差估计的多项式循环权重的随机置换。

英文摘要:

The order $O_n(σ)$ of a permutation $σ$ of $n$ objects is the smallest integer $k \geq 1$ such that the $k$-th iterate of $σ$ gives the identity. A remarkable result about the order of a uniformly chosen permutation is due to Erdös and Turán who proved in 1965 that $\log O_n$ satisfies a central limit theorem. We extend this result to the so-called \textit{generalized Ewens measure} in a previous paper. In this paper, we establish a local limit theorem as well as, under some extra moment condition, a precise large deviations estimate. These properties are new even for the uniform measure. Furthermore, we provide precise large deviations estimates for random permutations with polynomial cycle weights.

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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