تقرير
Asymptotic independence for random permutations from surface groups
| العنوان: | Asymptotic independence for random permutations from surface groups |
|---|---|
| المؤلفون: | Maoz, Yotam |
| سنة النشر: | 2023 |
| المجموعة: | Mathematics |
| مصطلحات موضوعية: | Mathematics - Group Theory, Mathematics - Combinatorics, Mathematics - Probability, 20b30 (Primary) 20p05, 20f65, 20e26, 60B15 (Secondary) |
| الوصف: | Let $X$ be an orientable hyperbolic surface of genus $g\geq 2$ with a marked point $o$, and let $\Gamma$ be an orientable hyperbolic surface group isomorphic to $\pi_{1}(X,o)$. Consider the space $\text{Hom}(\Gamma,S_{n})$ which corresponds to $n$-sheeted covers of $X$ with labeled fiber. Given $\gamma\in\Gamma$ and a uniformly random $\phi\in\text{Hom}(\Gamma,S_{n})$, what is the expected number of fixed points of $\phi(\gamma)$? Formally, let $F_{n}(\gamma)$ denote the number of fixed points of $\phi(\gamma)$ for a uniformly random $\phi\in\text{Hom}(\Gamma,S_{n})$. We think of $F_{n}(\gamma)$ as a random variable on the space $\text{Hom}(\Gamma,S_{n})$. We show that an arbitrary fixed number of products of the variables $F_{n}(\gamma)$ are asymptotically independent as $n\to\infty$ when there are no obvious obstructions. We also determine the limiting distribution of such products. Additionally, we examine short cycle statistics in random permutations of the form $\phi(\gamma)$ for a uniformly random $\phi\in\text{Hom}(\Gamma,S_{n})$. We show a similar asymptotic independence result and determine the limiting distribution. Comment: 38 pages, 2 figures |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2310.18637 |
| رقم الأكسشن: | edsarx.2310.18637 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |