Results 121 to 130 of about 26,712 (151)

The Zero Forcing Number of Graphs [PDF]

open access: yesSIAM Journal on Discrete Mathematics, 2019
A subset S of initially infected vertices of a graph G is called zero 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 neighbor, infects this neighbor. The zero forcing number of G is the minimum cardinality of a zero forcing set in G.
Thomas Kalinowski   +2 more
exaly   +4 more sources

Some bounds on the zero forcing number of a graph

open access: yesDiscrete Applied Mathematics, 2018
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 vertex $u$ from $0$ to $1$ if $u$ is the only neighbor with label $0$ of some vertex with label $1$, results in the ...
Michael Gentner, Dieter Rautenbach
exaly   +3 more sources

On Extremal Graphs for Zero Forcing Number

Graphs and Combinatorics, 2022
For a graph \(G\) with \(S\subseteq V(G)\), \(S\) is a zero forcing set of \(G\) if iteratively adding vertices to \(S\) from \(V(G)\setminus S\) that are the unique neighbor in \(V(G)\setminus S\) of some vertex in \(S\), results in the entire \(V(G)\) of \(G\).
Yi-Ping Liang, Jianxi Li, Shou-Jun Xu
openaire   +1 more source

On graphs maximizing the zero forcing number

Discrete Applied Mathematics, 2023
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yi-Ping Liang, Shou-Jun Xu
openaire   +2 more sources

Extremal values and bounds for the zero forcing number

open access: yesDiscrete Applied Mathematics, 2016
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Michael Gentner   +2 more
exaly   +3 more sources

The Zero Forcing Number of Graphs with the Matching Number and the Cyclomatic Number

Graphs and Combinatorics, 2023
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yu Jing, Wenqian Zhang, Shengjin Ji
openaire   +1 more source

All Graphs with a Failed Zero Forcing Number of Two [PDF]

open access: yesSymmetry, 2021
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 is in S, and exactly one neighbor u of v is not in S, then u is added to S in the next iteration.
Luis Gomez   +3 more
exaly   +3 more sources

On the Zero Forcing Number of Trees

Iranian Journal of Science and Technology, Transactions A: Science, 2021
Let G be a graph such that the color of its vertices is white or black. A dynamic vertex coloring for G is defined as follows. One starts with a certain set of black vertices. Then, at each time step, a black vertex with exactly one white neighbor forces its white neighbor to become black.
openaire   +1 more source

Zero forcing number of fuzzy graphs with application

Journal of Intelligent & Fuzzy Systems, 2020
We introduce and study forcing number for fuzzy graphs. Also, we compute zero forcing numbers for some classes of graphs and extend this concept to fuzzy graphs. In this regard we obtain upper bounds for zero forcing of some classes of fuzzy graphs. We will proceed to obtain a new algorithm to computing zero forcing set and finding a formula for zero ...
Asefeh Karbasioun, Reza Ameri
openaire   +1 more source

Home - About - Disclaimer - Privacy