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A domination coloring of a graph $G$ is a proper vertex coloring of $G$ such that each vertex of $G$ dominates at least one color class, and each color class is dominated by at least one vertex. The minimum number of colors among all…

离散数学 · 计算机科学 2019-09-10 Yangyang Zhou , Dongyang Zhao

Let $G$ be a simple graph. The dominated coloring of $G$ is a proper coloring of $G$ such that each color class is dominated by at least one vertex. The minimum number of colors needed for a dominated coloring of $G$ is called the dominated…

组合数学 · 数学 2019-10-10 Saeid Alikhani , Mohammad R. Piri

A total dominator coloring of a graph G is a proper coloring of G in which each vertex of the graph is adjacent to every vertex of some color class. The total dominator chromatic number of a graph is the minimum number of color classes in a…

组合数学 · 数学 2021-04-27 Farshad Kazemnejad , Behnaz Pahlavsay , Elisa Palezzato , Michele Torielli

Let $G$ be a simple graph. A total dominator coloring of $G$ is a proper coloring of the vertices of $G$ in which each vertex of the graph is adjacent to every vertex of some color class. The total dominator chromatic number $\chi_d^t(G)$…

组合数学 · 数学 2015-11-06 Saeid Alikhani , Nima Ghanbari

The total dominator total coloring of a graph is a total coloring of the graph such that each object of the graph is adjacent or incident to every object of some color class. The minimum namber of the color classes of a total dominator…

组合数学 · 数学 2021-12-30 Adel P. Kazemi , Farshad Kazemnejad

Let $G$ be a simple graph of order $n$. A majority dominator coloring of a graph $G$ is proper coloring in which each vertex of the graph dominates at least half of one color class. The majority dominator chromatic number $\chi_{md}(G)$ is…

组合数学 · 数学 2023-01-02 Marcin Anholcer , Azam Sadat Emadi , Doost Ali Mojdeh

Given a graph $G$, the total dominator coloring problem seeks a proper coloring of $G$ with the additional property that every vertex in the graph is adjacent to all vertices of a color class. We seek to minimize the number of color…

组合数学 · 数学 2018-08-14 Adel P. Kazemi

Dominator coloring of a graph is a proper (vertex) coloring with the property that every vertex is either alone in its color class or adjacent to all vertices of at least one color class. A dominated coloring of a graph is a proper coloring…

组合数学 · 数学 2020-02-19 Sandi Klavžar , Mostafa Tavakoli

A total dominator coloring of a graph $G$ is a proper coloring of $G$ in which each vertex of the graph is adjacent to every vertex of some color class. The total dominator chromatic number of a graph is the minimum number of color classes…

组合数学 · 数学 2018-05-09 Farshad Kazemnejad , Adel P. Kazemi

Let $G$ be a simple graph. The dominated coloring of a graph $G$ is a proper coloring of $G$ such that each color class is dominated by at least one vertex. The minimum number of colors needed for a dominated coloring of $G$ is called the…

组合数学 · 数学 2019-12-03 Saeid Alikhani , Mohammad R. Piri

A well-studied concept is that of the total chromatic number. A proper total colouring of a graph is a colouring of both vertices and edges so that every pair of adjacent vertices receive different colours, every pair of adjacent edges…

组合数学 · 数学 2010-09-14 Tom Coker , Karen Johannson

We introduce and study the dominated edge coloring of a graph. A dominated edge coloring of a graph $G$ is a proper edge coloring of $G$ such that each color class is dominated by at least one edge of $G$. The minimum number of colors among…

组合数学 · 数学 2020-03-24 Mohammad R. Piri , Saeid Alikhani

Total dominator total coloring of a graph is a total coloring of the graph such that each object of the graph is adjacent or incident to every object of some color class. The minimum namber of the color classes of a total dominator total…

组合数学 · 数学 2020-02-27 Adel P. Kazemi , Farshad Kazemnejad

This paper introduces a new variant of domination-related coloring of graphs, which is a combination of their dominator coloring and equitable coloring called the equitable dominator coloring. An equitable coloring is a proper coloring in…

组合数学 · 数学 2024-08-27 Phebe Sarah George , S. Madhumitha , Sudev Naduvath

By a graph we mean a finite undirected graph having multiple edges but no loops. Given a graph property $\mathcal{P}$, a $\mathcal{P}$-coloring of a graph $G$ with color set $C$ is a mapping $\f:V(G)\to C$ such that for each color $c\in C$…

组合数学 · 数学 2021-08-30 Alexandr V. Kostochka , Thomas Schweser , Michael Stiebitz

The smallest integer $k$ needed for the assignment of colors to the elements so that the coloring is proper (vertices and edges) is called the total chromatic number of a graph. Vizing and Behzed conjectured that the total coloring can be…

组合数学 · 数学 2018-12-17 Geetha Jayabalan , Narayanan N , K Somasundaram

The curling number of a graph G is defined as the number of times an element in the degree sequence of G appears the maximum. Graph colouring is an assignment of colours, labels or weights to the vertices or edges of a graph. A colouring…

综合数学 · 数学 2018-04-06 C. Susanth , N. K. Sudev , S. J. Kalayathankal

In this paper we consider a colouring version of the general position problem. The \emph{$\gp $-chromatic number} is the smallest number of colours needed to colour the vertices of the graph such that each colour class has the…

This paper serves as the first extension of the topic of dominator colorings of graphs to the setting of digraphs. We establish the dominator chromatic number over all possible orientations of paths and cycles. In this endeavor we discover…

组合数学 · 数学 2019-02-21 Michael Cary

A total dominator coloring of a graph $G$ is a proper coloring of $G$ in which each vertex of the graph is adjacent to every vertex of some color class. The total dominator chromatic number $\chi_d^t(G)$ of $G$ is the minimum number of…

组合数学 · 数学 2019-06-12 Adel P. Kazemi
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