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We present a new notion of limits of weighted directed graphs of growing size based on convergence of their random quotients. These limits are specified in terms of random exchangeable measures on the unit square. We call our limits…

组合数学 · 数学 2026-03-24 Eitan Levin , Venkat Chandrasekaran

We prove the existence of a limiting distribution for the appropriately rescaled diameters of random undirected Cayley graphs of finite nilpotent groups of bounded rank and nilpotency class, thus extending a result of Shapira and Zuck which…

组合数学 · 数学 2020-02-27 Daniel El-Baz , Carlo Pagano

We prove a variant of the abstract probabilistic version of Szemer\'edi's regularity lemma, due to Tao, which applies to a number of structures (including graphs, hypergraphs, hypercubes, graphons, and many more) and works for random…

组合数学 · 数学 2016-07-26 Pandelis Dodos , Vassilis Kanellopoulos , Thodoris Karageorgos

Distance-regular graphs are a class of regualr graphs with pretty combinatorial symmetry. In 2007, Miklavi\v{c} and Poto\v{c}nik proposed the problem of charaterizing distance-regular Cayley graphs, which can be viewed as a natural…

组合数学 · 数学 2023-11-15 Xueyi Huang , Lu Lu , Xiongfeng Zhan

Fix a prime number $p$. Let $\mathbb{F}_q$ be a finite field of characteristic coprime to 2, 3, and $p$, which also contains the primitive $p$-th root of unity $\mu_p$. Based on the works by Swinnerton-Dyer and Klagsbrun, Mazur, and Rubin,…

数论 · 数学 2025-03-20 Sun Woo Park

We find uniform lower bounds on the drift for a large family of random walks on graph products, of the form $ \mathbb{P} (|Z_{n}| \leq \kappa n) \leq e ^{-\kappa n} $ for $ \kappa > 0 $. This includes the simple random walk for a…

概率论 · 数学 2022-04-14 Kunal Chawla

We study the problem of detecting or recovering a planted ranked subgraph from a directed graph, an analog for directed graphs of the well-studied planted dense subgraph model. We suppose that, among a set of $n$ items, there is a subset…

统计理论 · 数学 2024-12-02 Dmitriy Kunisky , Daniel A. Spielman , Alexander S. Wein , Xifan Yu

Let $F$ be a probability distribution with support on the non-negative integers. Four methods for generating a simple undirected graph with (approximate) degree distribution $F$ are described and compared. Two methods are based on the so…

概率论 · 数学 2015-09-30 Tom Britton , Maria Deijfen , Anders Martin-Löf

In this paper we study the cokernels of various random integral matrix models, including random symmetric, random skew-symmetric, and random Laplacian matrices. We provide a systematic method to establish universality under very general…

概率论 · 数学 2022-10-18 Hoi H. Nguyen , Melanie Matchett Wood

Combining ideas of Pham, Sah, Sawhney, and Simkin on spread perfect matchings in super-regular bipartite graphs with an algorithmic blow-up lemma, we prove a spread version of the blow-up lemma. Intuitively, this means that there exists a…

组合数学 · 数学 2024-10-10 Rajko Nenadov , Huy Tuan Pham

This is the fourth in a series of articles devoted to showing that a typical covering map of large degree to a fixed, regular graph has its new adjacency eigenvalues within the bound conjectured by Alon for random regular graphs. In this…

概率论 · 数学 2019-11-14 Joel Friedman , David Kohler

This work deals with the divisible sandpile model when an initial configuration sampled from a heavy-tailed distribution. Extending results of Levine et al. (2015) and Cipriani et al. (2016) we determine sufficient conditions for…

概率论 · 数学 2016-11-01 Alessandra Cipriani , Rajat Subhra Hazra , Wioletta M. Ruszel

A soft random graph $G(n,r,p)$ can be obtained from the random geometric graph $G(n,r)$ by keeping every edge in $G(n,r)$ with probability $p$. The soft random simplicial complexes is a model for random simplicial complexes built over the…

概率论 · 数学 2025-07-15 Julián David Candela

In this paper, we give a short proof of the weak convergence to the Kesten-McKay distribution for the normalized spectral measures of random $N$-lifts. This result is derived by generalizing a formula of Friedman involving Chebyshev…

组合数学 · 数学 2024-10-15 Yulin Gong , Wenbo Li , Shiping Liu

A theorem of Hoffman gives an upper bound on the independence ratio of regular graphs in terms of the minimum $\lambda_{\min}$ of the spectrum of the adjacency matrix. To complement this result we use random eigenvectors to gain lower…

概率论 · 数学 2016-08-11 Viktor Harangi , Bálint Virág

We introduce probability-graphons which are probability kernels that generalize graphons to the case of weighted graphs. Probability-graphons appear as the limit objects to study sequences of large weighted graphs whose distribution of…

离散数学 · 计算机科学 2025-06-12 Romain Abraham , Jean-François Delmas , Julien Weibel

Recent work on the structure of social networks and the internet has focussed attention on graphs with distributions of vertex degree that are significantly different from the Poisson degree distributions that have been widely studied in…

统计力学 · 物理学 2009-10-31 M. E. J. Newman , S. H. Strogatz , D. J. Watts

We introduce a class of random graphs that we argue meets many of the desiderata one would demand of a model to serve as the foundation for a statistical analysis of real-world networks. The class of random graphs is defined by a…

统计理论 · 数学 2015-12-11 Victor Veitch , Daniel M. Roy

In this paper we study $d$-dependent random graphs -- introduced by Brody and Sanchez -- which are the family of random graph distributions where each edge is present with probability $p$, and each edge is independent of all but at most $d$…

组合数学 · 数学 2024-05-16 Joshua Brody , Pat Devlin , Aditi Dudeja , Emmi Rivkin

Local convergence of bounded degree graphs was introduced by Benjamini and Schramm. This result was extended further by Lyons to bounded average degree graphs. In this paper we study the convergence of random tree sequences with given…

概率论 · 数学 2014-08-07 Attila Deák