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Given a graph $G=(V,E)$ and a set of vertices marked as filled, we consider a color-change rule known as zero forcing. A set $S$ is a zero forcing set if filling $S$ and applying all possible instances of the color change rule causes all…

组合数学 · 数学 2023-08-16 Eric Ufferman , Nicolas Swanson

Zero forcing (also called graph infection) on a simple, undirected graph $G$ is based on the color-change rule: If each vertex of $G$ is colored either white or black, and vertex $v$ is a black vertex with only one white neighbor $w$, then…

组合数学 · 数学 2014-10-21 Leslie Hogben , My Huynh , Nicole Kingsley , Sarah Meyer , Shanise Walker , Michael Young

A subset $S$ of initially infected vertices of a graph $G$ is called forcing if we can infect the entire graph by iteratively applying the following process. At each step, any infected vertex which has a unique uninfected neighbour, infects…

组合数学 · 数学 2017-06-06 Thomas Kalinowski , Nina Kamčev , Benny Sudakov

The zero forcing number $Z(G)$ of a graph $G$ is the minimum cardinality of a set $S$ with colored (black) vertices which forces the set $V(G)$ to be colored (black) after some times. "color change rule": a white vertex is changed to a…

组合数学 · 数学 2017-02-23 M. Khosravi , S. Rashidi 2 , A. Sheikhhosseni

For a graph $G$ in which vertices are either black or white, a zero forcing process is an iterative vertex color changing process such that the only white neighbor of a black vertex becomes black in the next time step. A zero forcing set is…

组合数学 · 数学 2025-08-26 Hau-Yi Lin , Wu-Hsiung Lin , Gerard Jennhwa Chang

Given a graph $G$, the zero forcing number of $G$, $Z(G)$, is the smallest cardinality of any set $S$ of vertices on which repeated applications of the forcing rule results in all vertices being in $S$. The forcing rule is: if a vertex $v$…

组合数学 · 数学 2022-09-21 Aidan Johnson , Andrew E. Vick , Darren A. Narayan

Zero forcing is a process on graphs in which a color change rule is used to force vertices to become blue. The amount of time taken for all vertices in the graph to become blue is the propagation time. Throttling minimizes the sum of the…

Zero forcing is an iterative coloring process on a graph that has been widely used in such different areas as the modelling of propagation phenomena in networks and the study of minimum rank problems in matrices and graphs. This paper deals…

组合数学 · 数学 2021-09-24 Josep Fàbrega , Jaume Martí-Farré , Xavier Muñoz

A set $Z$ of vertices of a graph $G$ is a zero forcing set of $G$ if initially labeling all vertices in $Z$ with $1$ and all remaining vertices of $G$ with $0$, and then, iteratively and as long as possible, changing the label of some…

组合数学 · 数学 2016-08-03 Michael Gentner , Dieter Rautenbach

Zero forcing is a propagation process on a graph, or digraph, defined in linear algebra to provide a bound for the minimum rank problem. Independently, zero forcing was introduced in physics, computer science and network science, areas…

组合数学 · 数学 2019-03-28 Daniela Ferrero , Thomas Kalinowski , Sudeep Stephen

Probabilistic zero forcing is a coloring game played on a graph where the goal is to color every vertex blue starting with an initial blue vertex set. As long as the graph is connected, if at least one vertex is blue then eventually all of…

组合数学 · 数学 2022-01-13 Shyam Narayanan , Alec Sun

Let $G$ be a graph, and $Z$ a subset of its vertices, which we color black, while the remaining are colored white. We define the skew color change rule as follows: if $u$ is a vertex of $G$, and exactly one of its neighbors $v$, is white,…

组合数学 · 数学 2014-05-16 Luz M. DeAlba

The \emph{zero forcing number}, $Z(G)$, of a graph $G$ is the minimum cardinality of a set $S$ of black vertices (whereas vertices in $V(G) \setminus S$ are colored white) such that $V(G)$ is turned black after finitely many applications of…

组合数学 · 数学 2015-02-19 Linda Eroh , Cong X. Kang , Eunjeong Yi

A dynamic coloring of the vertices of a graph $G$ starts with an initial subset $S$ of colored vertices, with all remaining vertices being non-colored. At each discrete time interval, a colored vertex with exactly one non-colored neighbor…

组合数学 · 数学 2017-08-18 Randy Davila , Michael Henning

The \emph{zero forcing number} $Z(G)$ of a graph $G$ is the minimum cardinality of a set $S$ of black vertices (whereas vertices in $V(G)\setminusS$ are colored white) such that $V(G)$ is turned black after finitely many applications of…

组合数学 · 数学 2012-08-20 Cong X. Kang , Eunjeong Yi

In this note, we study a dynamic vertex coloring for a graph $G$. In particular, one starts with a certain set of vertices black, and all other vertices white. Then, at each time step, a black vertex with exactly one white neighbor forces…

组合数学 · 数学 2018-11-02 Randy Davila , Thomas Kalinowski , Sudeep Stephen

Amos et al. (Discrete Appl. Math. 181 (2015) 1-10) introduced the notion of the $k$-forcing number of graph for a positive integer $k$ as the generalization of the zero forcing number of a graph. The $k$-forcing number of a simple graph…

组合数学 · 数学 2015-07-07 Leihao Lu , Baoyindureng Wu , Zixing Tang

Modeling how information travels throughout a network has vast applications across social sciences, cybersecurity, and graph-based neural networks. In this paper, we consider the zero forcing model for information diffusion on iterative…

组合数学 · 数学 2025-07-18 Christopher Brice , Erin Meger , Nhat-Dinh Nguyen , Allen Rakhamimov , Abigail Raz

Given a simple undirected graph $G$ and a positive integer $k$, the $k$-forcing number of $G$, denoted $F_k(G)$, is the minimum number of vertices that need to be initially colored so that all vertices eventually become colored during the…

组合数学 · 数学 2014-01-27 David Amos , Yair Caro , Randy Davila , Ryan Pepper

The concept of zero forcing is extended from graphs to uniform hypergraphs in analogy with the way zero forcing was defined as an upper bound for the maximum nullity of the family of symmetric matrices whose nonzero pattern of entries is…

组合数学 · 数学 2018-08-30 Leslie Hogben