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Percolation in an information-theoretically secure graph is considered where both the legitimate and the eavesdropper nodes are distributed as Poisson point processes. For both the path-loss and the path-loss plus fading model, upper and…

信息论 · 计算机科学 2011-04-07 Rahul Vaze

The k-neighbor graph is a directed percolation model on the hypercubic lattice Z d in which each vertex independently picks exactly k of its 2d nearest neighbors at random, and we open directed edges towards those. We prove that the…

概率论 · 数学 2024-12-31 David Coupier , Benoît Henry , Benedikt Jahnel , Jonas Köppl

Consider percolation on $T\times \mathbb{Z}^d$, the product of a regular tree of degree $k\geq 3$ with the hypercubic lattice $\mathbb{Z}^d$. It is known that this graph has $0<p_c<p_u<1$, so that there are non-trivial regimes in which…

概率论 · 数学 2024-12-23 Tom Hutchcroft , Minghao Pan

One major open conjecture in the area of critical random graphs, formulated by statistical physicists, and supported by a large amount of numerical evidence over the last decade [23, 24, 28, 63] is as follows: for a wide array of random…

概率论 · 数学 2017-01-17 Shankar Bhamidi , Remco van der Hofstad , Sanchayan Sen

We study the percolation time of the $r$-neighbour bootstrap percolation model on the discrete torus $(\Z/n\Z)^d$. For $t$ at most a polylog function of $n$ and initial infection probabilities within certain ranges depending on $t$, we…

概率论 · 数学 2013-08-15 Béla Bollobás , Paul Smith , Andrew J. Uzzell

Majority bootstrap percolation is a monotone cellular automata that can be thought of as a model of infection spreading in networks. Starting with an initially infected set, new vertices become infected once more than half of their…

组合数学 · 数学 2024-06-26 Maurício Collares , Joshua Erde , Anna Geisler , Mihyun Kang

Let M_n denote the number of sites in the largest cluster in critical site percolation on the triangular lattice inside a box side length n. We give lower and upper bounds on the probability that M_n / E(M_n) > x of the form exp(- C…

概率论 · 数学 2014-04-09 Demeter Kiss

We consider the densities of clusters, at the percolation point of a two-dimensional system, which are anchored in various ways to an edge. These quantities are calculated by use of conformal field theory and computer simulations. We find…

无序系统与神经网络 · 物理学 2009-11-11 P. Kleban , J. J. H. Simmons , R. M. Ziff

We study the susceptibility, i.e., the mean cluster size, in random graphs with given vertex degrees. We show, under weak assumptions, that the susceptibility converges to the expected cluster size in the corresponding branching process. In…

组合数学 · 数学 2009-11-16 Svante Janson

Consider the process where the $n$ vertices of a square $2$-dimensional torus appear consecutively in a random order. We show that typically the size of the $3$-core of the corresponding induced unit-distance graph transitions from $0$ to…

组合数学 · 数学 2026-01-23 Ivailo Hartarsky , Lyuben Lichev

We consider supercritical long-range percolation on transitive graphs of polynomial growth. In this model, any two vertices $x$ and $y$ of the underlying graph $G$ connect by a direct edge with probability $1-\exp(-\beta J(x,y))$, where…

概率论 · 数学 2026-01-13 Yago Moreno Alonso , Julia Komjathy

Global physical properties of random media change qualitatively at a percolation threshold, where isolated clusters merge to form one infinite connected component. The precise knowledge of percolation thresholds is thus of paramount…

统计力学 · 物理学 2008-01-13 Richard A. Neher , Klaus Mecke , Herbert Wagner

We consider the Erd\"{o}s--R\'{e}nyi random graph $G_{n,p}$ and we analyze the simple irreversible epidemic process on the graph, known in the literature as bootstrap percolation. We give a quantitative version of some results by Janson et…

概率论 · 数学 2020-01-17 Giovanni Luca Torrisi , Michele Garetto , Emilio Leonardi

We study long-range Bernoulli percolation on $\mathbb{Z}^d$ in which each two vertices $x$ and $y$ are connected by an edge with probability $1-\exp(-\beta \|x-y\|^{-d-\alpha})$. It is a theorem of Noam Berger (CMP, 2002) that if…

概率论 · 数学 2021-02-15 Tom Hutchcroft

In r-neighbour bootstrap percolation on the vertex set of a graph G, vertices are initially infected independently with some probability p. At each time step, the infected set expands by infecting all uninfected vertices that have at least…

组合数学 · 数学 2012-11-01 Béla Bollobás , Cecilia Holmgren , Paul Smith , Andrew J. Uzzell

For independent nearest-neighbour bond percolation on Z^d with d >> 6, we prove that the incipient infinite cluster's two-point function and three-point function converge to those of integrated super-Brownian excursion (ISE) in the scaling…

数学物理 · 物理学 2009-10-31 Takashi Hara , Gordon Slade

Let $(G_n)_{n \geq 1} = ((V_n,E_n))_{n \geq 1}$ be a sequence of finite, connected, vertex-transitive graphs with volume tending to infinity. We say that a sequence of parameters $(p_n)_{n \geq 1}$ in $[0,1]$ is supercritical with respect…

概率论 · 数学 2024-03-12 Philip Easo , Tom Hutchcroft

The uniform even subgraph is intimately related to the Ising model, the random-cluster model, the random current model, and the loop $\mathrm{O}$(1) model. In this paper, we first prove that the uniform even subgraph of $Z^d$ percolates for…

概率论 · 数学 2025-06-02 Ulrik Thinggaard Hansen , Boris Kjær , Frederik Ravn Klausen

In the presented article, statistical properties regarding the topology and standard percolation on relative neighborhood graphs (RNGs) for planar sets of points, considering the Euclidean metric, are put under scrutiny. RNGs belong to the…

统计力学 · 物理学 2013-04-17 O. Melchert

How does the percolation transition behave in the absence of quenched randomness? To address this question, we study two nonrandom self-dual quasiperiodic models of square-lattice bond percolation. In both models, the critical point has…

统计力学 · 物理学 2023-03-08 Grace M. Sommers , Michael J. Gullans , David A. Huse