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We identify the upper large deviation probability for the number of edges in scale-free geometric random graph models as the space volume goes to infinity. Our result covers the models of scale-free percolation, the Boolean model with…

We consider a random graph in which vertices can have one of two possible colours. Each vertex switches its colour at a rate that is proportional to the number of vertices of the other colour to which it is connected by an edge. Each edge…

概率论 · 数学 2026-04-21 Siva Athreya , Frank den Hollander , Adrian Röllin

We systematically study a natural problem in extremal graph theory, to minimize the number of edges in a graph with a fixed number of vertices, subject to a certain local condition: each vertex must be in a copy of a fixed graph $H$. We…

组合数学 · 数学 2020-06-24 Debsoumya Chakraborti , Po-Shen Loh

We consider the edge-triangle model, a two-parameter family of exponential random graphs in which dependence between edges is introduced through triangles. In the so-called replica symmetric regime, the limiting free energy exists together…

概率论 · 数学 2023-01-31 Alessandra Bianchi , Francesca Collet , Elena Magnanini

Using a steady state process of node duplication and deletion we produce networks with 1/k scale-free degree distributions in the limit of vanishing connectance. This occurs even though there is no growth involved and inherent preferential…

统计力学 · 物理学 2007-05-23 Simon Laird , Henrik Jeldtoft Jensen

In this paper we study the component structure of random graphs with independence between the edges. Under mild assumptions, we determine whether there is a giant component, and find its asymptotic size when it exists. We assume that the…

概率论 · 数学 2010-06-29 Bela Bollobas , Svante Janson , Oliver Riordan

We exploit a result by Nerman which shows that conditional limit theorems hold when a certain monotonicity condition is satisfied. Our main result is an application to vertex degrees in random graphs, where we obtain asymptotic normality…

概率论 · 数学 2009-09-29 Svante Janson

We study a variant of the standard random intersection graph model ($G(n,m,F,H)$) in which random weights are assigned to both vertex types in the bipartite structure. Under certain assumptions on the distributions of these weights, the…

组合数学 · 数学 2010-03-10 Yilun Shang

We study the susceptibility, i.e., the mean size of the component containing a random vertex, in a general model of inhomogeneous random graphs. This is one of the fundamental quantities associated to (percolation) phase transitions; in…

概率论 · 数学 2012-03-27 Svante Janson , Oliver Riordan

We consider, for every positive integer $a$, probability distributions on subsets of vertices of a graph with the property that every vertex belongs to the random set sampled from this distribution with probability at most $1/a$. Among…

组合数学 · 数学 2019-07-31 Zdeněk Dvořák , Jean-Sébastien Sereni

The exponential family of random graphs is one of the most promising class of network models. Dependence between the random edges is defined through certain finite subgraphs, analogous to the use of potential energy to provide dependence…

数学物理 · 物理学 2015-06-11 Mei Yin

In this paper we derive results concerning the connected components and the diameter of random graphs with an arbitrary i.i.d. degree sequence. We study these properties primarily, but not exclusively, when the tail of the degree…

概率论 · 数学 2007-05-23 Remco van der Hofstad , Gerard Hooghiemstra , Dmitri Znamenski

Random walk on changing graphs is considered. For sequences of finite graphs increasing monotonically towards a limiting infinite graph, we establish transition probability upper bounds. It yields sufficient transience criteria for simple…

概率论 · 数学 2018-10-09 Ruojun Huang

In the branch of mathematics known as graph theory, graphs are considered as a set of points, called vertices, with connections between these points, called edges. The purpose of this paper is to study mappings between two graphs that have…

组合数学 · 数学 2019-03-19 Jeffrey Beyerl , Cameron Sharpe

We introduce a very general model of an inhomogenous random graph with independence between the edges, which scales so that the number of edges is linear in the number of vertices. This scaling corresponds to the p=c/n scaling for G(n,p)…

概率论 · 数学 2011-11-10 Bela Bollobas , Svante Janson , Oliver Riordan

We show that by restricting the degrees of the vertices of a graph to an arbitrary set \( \Delta \), the threshold point $ \alpha(\Delta) $ of the phase transition for a random graph with $ n $ vertices and $ m = \alpha(\Delta) n $ edges…

组合数学 · 数学 2017-12-21 Sergey Dovgal , Vlady Ravelomanana

The following random graph model was introduced for the evolution of protein-protein interaction networks: Let $\mathcal G = (G_n)_{n=n_0, n_0+1,...}$ be a sequence of random graphs, where $G_n = (V_n, E_n)$ is a graph with $|V_n|=n$…

概率论 · 数学 2024-07-02 Felix Hermann , Peter Pfaffelhuber

We consider a variation on the Barab\'asi-Albert random graph process with fixed parameters $m\in \mathbb{N}$ and $1/2 < p < 1$. With probability $p$ a vertex is added along with $m$ edges, randomly chosen proportional to vertex degrees.…

组合数学 · 数学 2016-11-18 Tony Johansson

We investigate a degree-biased cutting process on random recursive trees, where each vertex is deleted with probability proportional to its degree. We establish the splitting property and derive the explicit distribution of the number of…

概率论 · 数学 2025-11-24 Laura Eslava , Sergio I. López , Marco L. Ortiz

Vertex deletion problems for graphs are studied intensely in classical and parameterized complexity theory. They ask whether we can delete at most k vertices from an input graph such that the resulting graph has a certain property.…

计算机科学中的逻辑 · 计算机科学 2024-06-27 Max Bannach , Florian Chudigiewitsch , Till Tantau