Results 11 to 20 of about 22,016 (260)

Game Chromatic Number of Shackle Graphs

open access: greenJTAM (Jurnal Teori dan Aplikasi Matematika), 2021
Coloring vertices on graph is one of the topics of discrete mathematics that are still developing until now. Exploration Coloring vertices develops in the form of a game known as a coloring game. Let G graph.
Firmansyah Firmansyah, Abdul Mujib
doaj   +2 more sources

The b-chromatic number of power graphs [PDF]

open access: diamondDiscrete Mathematics & Theoretical Computer Science, 2003
The b-chromatic number of a graph G is defined as the maximum number k of colors that can be used to color the vertices of G, such that we obtain a proper coloring and each color i, with 1 ≤ i≤ k, has at least one representant x i adjacent to a
Brice Effantin, Hamamache Kheddouci
doaj   +3 more sources

The open monophonic chromatic number of a graph [PDF]

open access: yesJournal of Hyperstructures, 2023
A set P of vertices in a connected graph G is called open monophonic chromatic set if P is both an open monophonic set and a chromatic set. The minimum cardinality among the set of all open monophonic chromatic sets is called open monophonic chromatic ...
Mohammed Abdul Khayyoom   +1 more
doaj   +1 more source

Local chromatic number and topology [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
The local chromatic number of a graph, introduced by Erdős et al., is the minimum number of colors that must appear in the closed neighborhood of some vertex in any proper coloring of the graph.
Gábor Simonyi, Gábor Tardos
doaj   +1 more source

The game chromatic number of trees and forests [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2015
While the game chromatic number of a forest is known to be at most 4, no simple criteria are known for determining the game chromatic number of a forest. We first state necessary and sufficient conditions for forests with game chromatic number 2 and then
Charles Dunn   +4 more
doaj   +1 more source

Distance graphs with maximum chromatic number [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
Let $D$ be a finite set of integers. The distance graph $G(D)$ has the set of integers as vertices and two vertices at distance $d ∈D$ are adjacent in $G(D)$.
Javier Barajas, Oriol Serra
doaj   +1 more source

Dynamic Chromatic Number of Bipartite Graphs [PDF]

open access: yesScientific Annals of Computer Science, 2016
A dynamic coloring of a graph G is a proper vertex coloring such that for every vertex v Î V(G) of degree at least 2, the neighbors of v receive at least 2 colors.
S. Saqaeeyan, E. Mollaahamdi
doaj   +1 more source

The -distance chromatic number of trees and cycles

open access: yesAKCE International Journal of Graphs and Combinatorics, 2019
For any positive integer , a -distance coloring of a graph is a vertex coloring of in which no two vertices at distance less than or equal to receive the same color.
Niranjan P.K., Srinivasa Rao Kola
doaj   +2 more sources

On the dominated chromatic number of certain graphs [PDF]

open access: yesTransactions on Combinatorics, 2020
‎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.
Saeid Alikhani, Mohammad Reza Piri
doaj   +1 more source

Generalisasi Bilangan Kromatik Pada Beberapa Kelas Graf Korona

open access: yesJurnal Derivat, 2022
For example  is a chromatic number with the smallest integer so that the graph  has a true vertex coloring with k color. Chromatic number is still an interesting study which is still being studied for its development through graph coloring.
Riduan Yusuf   +3 more
doaj   +1 more source

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