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In graph theoretical models of the spread of disease through populations, the spread of opinion through social networks, and the spread of faults through distributed computer networks, vertices are in two states, either black or white, and…

Combinatorics · Mathematics 2011-03-01 Sarah Spence Adams , Zachary Brass , Connor Stokes , Denise Sakai Troxell

An irreversible $k$-threshold process (also a $k$-neighbor bootstrap percolation) is a dynamic process on a graph where vertices change color from white to black if they have at least $k$ black neighbors. An irreversible $k$-conversion set…

Discrete Mathematics · Computer Science 2023-06-22 Jan Kynčl , Bernard Lidický , Tomáš Vyskočil

Various graph products and operations have been widely used to construct complex networks with common properties of real-life systems. However, current works mainly focus on designing models of binary networks, in spite of the fact that…

Social and Information Networks · Computer Science 2017-09-15 Yi Qi , Huan Li , Zhongzhi Zhang

Given a graph $G=(V,E)$ and a set $S_0\subseteq V$, an irreversible $k$-threshold conversion process on $G$ is an iterative process wherein, for each $t=1,2,\dots$, $S_t$ is obtained from $S_{t-1}$ by adjoining all vertices that have at…

Discrete Mathematics · Computer Science 2018-12-11 C. M. Mynhardt , J. L. Wodlinger

Product graphs have been gainfully used in literature to generate mathematical models of complex networks which inherit properties of real networks. Realizing the duplication phenomena imbibed in the definition of corona product of two…

Spectral Theory · Mathematics 2015-07-21 Rohan Sharma , Bibhas Adhikari , Abhishek Mishra

The paper focuses on studying strong geodetic sets and numbers in the context of corona-type products of graphs. Our primary focus is on three variations of the corona products: the generalized corona, generalized edge corona, and…

Combinatorics · Mathematics 2024-11-21 Bishal Sonar , Satyam Guragain , Ravi Srivastava

For unsigned graphs G and H, the characteristic polynomial of different graph matrices for edge corona, subdivision vertex neighbourhood corona and subdivision edge neighbourhood corona has already been studied using the concept of coronal.…

Combinatorics · Mathematics 2024-01-11 Satyam Guragain , Ravi Srivastava , Bishal Sonar

Given a connected simple graph $G=(V,E)$, and a positive integer $k$, a set $S\subseteq V$ is said to be a $k$-metric generator for $G$ if and only if for any pair of different vertices $u,v\in V$, there exist at least $k$ vertices…

We consider a branching random walk with binary state space and index set $T^k$, the infinite rooted tree in which each node has k children (also known as the model of "broadcasting on a tree"). The root of the tree takes a random value 0…

Probability · Mathematics 2007-05-23 James B. Martin

In this paper, we study rooted products of graphs from the perspective of combinatorial commutative algebra. For edge ideals, we introduce the 2-Cohen-Macaulayness with respect to a vertex and use it to investigate when edge ideals of…

Commutative Algebra · Mathematics 2025-12-09 Yuji Muta , Naoki Terai

We develop the theory of the k-core (bootstrap) percolation on uncorrelated random networks with arbitrary degree distributions. We show that the k-core percolation is an unusual, hybrid phase transition with a jump emergence of the k-core…

Statistical Mechanics · Physics 2009-11-11 A. V. Goltsev , S. N. Dorogovtsev , J. F. F. Mendes

We present an algorithm for bounding the probability of r-core formation in k-uniform hypergraphs. Understanding the probability of core formation is useful in numerous applications including bounds on the failure rate of Invertible Bloom…

Data Structures and Algorithms · Computer Science 2019-01-16 George Bissias

Many graph products have been applied to generate complex networks with striking properties observed in real-world systems. In this paper, we propose a simple generative model for simplicial networks by iteratively using edge corona…

Discrete Mathematics · Computer Science 2020-02-28 Yucheng Wang , Yuhao Yi , Wanyue Xu , Zhongzhi Zhang

We construct a corona of a relatively hyperbolic group by blowing-up all parabolic points of its Bowditch boundary. We relate the $K$-homology of the corona with the $K$-theory of the Roe algebra, via the coarse assembly map. We also…

K-Theory and Homology · Mathematics 2017-05-17 Tomohiro Fukaya , Shin-ichi Oguni

The resilience of a complex interconnected system concerns the size of the macroscopic functioning node clusters after external perturbations based on a random or designed scheme. For a representation of the interconnected systems with…

Physics and Society · Physics 2017-06-27 Jin-Hua Zhao

We introduce recursive corona graphs as a model of small-world networks. We investigate analytically the critical characteristics of the model, including order and size, degree distribution, average path length, clustering coefficient, and…

Discrete Mathematics · Computer Science 2016-01-27 Qian Lv , Yuhao Yi , Zhongzhi Zhang

Bootstrap percolation on an arbitrary graph has a random initial configuration, where each vertex is occupied with probability p, independently of each other, and a deterministic spreading rule with a fixed parameter k: if a vacant site has…

Probability · Mathematics 2008-04-26 Jozsef Balogh , Yuval Peres , Gabor Pete

In this paper, we initiate a systematic study of generalized binomial edge ideals of whisker graphs by working within a substantially broader class of graphs. We extend the notion of generalized corona products, and through this enlarged…

Commutative Algebra · Mathematics 2026-02-10 J Anuvinda , Ranjana Mehta , Kamalesh Saha

Graph operations are crucial for building complicated network architectures from simple graphs. In [7], authors defined two new variants of Corona product and investigated some topological indices. In this paper, we extended the work and…

Combinatorics · Mathematics 2021-11-23 Rao Tabish , Muhammad Kamran Jamil , Muhammad Waheed

The $2$-layer drawing model is a well-established paradigm to visualize bipartite graphs. Several beyond-planar graph classes have been studied under this model. Surprisingly, however, the fundamental class of $k$-planar graphs has been…

Discrete Mathematics · Computer Science 2020-08-24 Patrizio Angelini , Giordano Da Lozzo , Henry Förster , Thomas Schneck
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