Results 31 to 40 of about 9,106,907 (129)

The Packing Chromatic Number of Random d-regular Graphs [PDF]

open access: yes, 2015
Let G = (V (G),E(G)) be a simple graph of order n and let i be a positive integer. Xi superset V (G) is called an i-packing if vertices in Xi are pairwise distance more than i apart. A packing coloring of G is a partition X = {X1,X2,X3, . . .
Clifton, Ann Wells
core   +1 more source

On the Packing Chromatic Number on Hamming Graphs and General Graphs

open access: yesCoRR, 2015
The packing chromatic number $χ_ρ(G)$ of a graph $G$ is the smallest integer $k$ needed to proper color the vertices of $G$ in such a way the distance between any two vertices having color $i$ be at least $i+1$. We obtain $χ_ρ(H_{q,m})$ for $m=3$, where $H_{q,m}$ is the Hamming graph of words of length $m$ and alphabet with $q$ symbols, and tabulate ...
Graciela L. Nasini   +2 more
openaire   +3 more sources

Packing Chromatic Number of Cycle Related Graphs

open access: yesInternational Journal of Mathematics and Soft Computing, 2014
The packing chromatic number I‡ (G) of a graph G is the smallest integer k for which there exists a mapping I  : V (G) −→ {1, 2, ..., k} such that any two vertices of color i are at distance at least i + 1. It is a frequency assignment problem used in wireless networks, which is also called Broadcasting coloring.
Indra Rajasingh   +2 more
openaire   +1 more source

Packing chromatic numbers of finite super subdivisions of graphs

open access: yesFilomat, 2020
Given a graph G and a positive integer i, an i-packing in G is a subset W of the vertex set of G such that the distance between any two distinct vertices from W is greater than i. The packing chromatic number of a graph G, ??(G), is the smallest integer k such that the vertex set of G can be partitioned into sets Vi, i ?
Lemdani, Rachid   +2 more
openaire   +3 more sources

Computer search for packing chromatic number for different lattices [PDF]

open access: yes, 2018
Pojem pakirnega kromatskega števila prihaja iz področja načrtovanja frekvenc v brezžičnih omrežjih. Pri pakiranju k-barv grafa G, morajo biti vozlišča grafa z barvo i paroma na večji razdalji kot si.
Markuš, Žiga
core  

Packing chromatic number of subcubic graphs

open access: yes, 2017
16 pages, 2 ...
Balogh, József   +2 more
openaire   +2 more sources

Algebraic Properties of Chromatic Polynomials and Their Roots [PDF]

open access: yes, 2015
In this thesis we examine chromatic polynomials from the viewpoint of algebraic number theory. We relate algebraic properties of chromatic polynomials of graphs to structural properties of those graphs for some simple families of graphs.
Gilmore, Hamish Julian
core  

Packing chromatic number of square lattice

open access: yes, 2022
A dissertation submitted in partial fulfilment of the requirements for the degree of Master of Science to the Faculty Science, School of Mathematics, University of the Witwatersrand, Johannesburg, 2022The notion of packing coloring comes from the area ...
Sarila, Jabulani Harmony
core  

Packing Chromatic Number of Distance Graphs

open access: yes, 2011
The packing chromatic number (G) of a graph G is the smallest integer k such that vertices of G can be partitioned into disjoint classes X
Jan Ekstein, et al.
core  

The s-packing chromatic number of a graph [PDF]

open access: yes, 2012
Let S = (a₁, a₂, ...) be an infinite nondecreasing sequence of positive integers. An S-packing k-coloring of a graph G is a mapping from V(G) to {1,2,...,k} such that vertices with color i have pairwise distance greater than $a_i$, and the S-packing ...
Xu, Honghai, Goddard, Wayne
core   +1 more source

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