随机正则图谱的谱收敛:切比雀夫多项式、非回溯步及单位色扩展
组合数学
2024-10-15 v2 概率论
谱理论
摘要
本文给出了对随机 N 升图谱标准化谱测度弱收敛于 Kesten-McKay 分布的简短证明。该结果通过推广 Friedman 关于切比雀夫多项式和非回溯步的公式得出。我们还扩展了 Sodin 关于图谱测度收敛性准则至度数逐渐增大的规则图。结果表明,对于任意 ,若随机 - 正则图序列 满足 且 趋于无穷,则其标准化谱测度几乎必然在 - Wasserstein 距离下收敛于半圆分布。这强化了 Dumitriu 和 Pal 的结果。许多结果也推广至单位色正则图。
引用
@article{arxiv.2406.05759,
title = {Spectral convergence of random regular graphs: Chebyshev polynomials, non-backtracking walks, and unitary-color extensions},
author = {Yulin Gong and Wenbo Li and Shiping Liu},
journal= {arXiv preprint arXiv:2406.05759},
year = {2024}
}
备注
28 pages, 5 figures. We tbank the anonymous referee for bringing the work of Sasha Sodin to our attention. We have attributed proper credits of Theorem 3.1 to Sasha Sodin in this version. We further modify the whole article accordingly. All comments are welcome!