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A study of applications of graph colouring in various fields

open access: yesInternational Journal of Statistics and Applied Mathematics, 2022
Graph theory is an important branch of applied mathematics with a lot of applications in many fields. Graph theory has a broad scale of applications in many practical situations.
Anjali Gangrade   +3 more
semanticscholar   +1 more source

Fuzzy dominator coloring on fuzzy soft graphs

open access: yesRatio Mathematica, 2023
A fuzzy soft dominator colouring of a fuzzy soft graph $G^S$(T,V) is an appropriate fuzzy soft colouring such that every single vertex of $G^S$(T,V) dominate entire vertex of a colour group.
Jahir Hussain Rasheed, Afya Farhana
doaj   +1 more source

The Metric Chromatic Number of Zero Divisor Graph of a Ring Zn

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2022
Let Γ be a nontrivial connected graph, c:VΓ⟶ℕ be a vertex colouring of Γ, and Li be the colouring classes that resulted, where i=1,2,…,k. A metric colour code for a vertex a of a graph Γ is ca=da,L1,da,L2,…,da,Ln, where da,Li is the minimum distance ...
Husam Qasem Mohammad   +2 more
doaj   +1 more source

Acyclic, Star and Oriented Colourings of Graph Subdivisions [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2005
Let G be a graph with chromatic number χ (G). A vertex colouring of G is \emphacyclic if each bichromatic subgraph is a forest. A \emphstar colouring of G is an acyclic colouring in which each bichromatic subgraph is a star forest. Let χ _a(G) and χ _s(G)
David R. Wood
doaj   +3 more sources

Graph Colouring Meets Deep Learning: Effective Graph Neural Network Models for Combinatorial Problems [PDF]

open access: yesIEEE International Conference on Tools with Artificial Intelligence, 2019
Deep learning has consistently defied state-of-the-art techniques in many fields over the last decade. However, we are just beginning to understand the capabilities of neural learning in symbolic domains. Deep learning architectures that employ parameter
Henrique Lemos   +3 more
semanticscholar   +1 more source

Colouring diamond-free graphs [PDF]

open access: yesJournal of Computer and System Sciences, 2017
The Colouring problem is that of deciding, given a graph $G$ and an integer $k$, whether $G$ admits a (proper) $k$-colouring. For all graphs $H$ up to five vertices, we classify the computational complexity of Colouring for $(\mbox{diamond},H)$-free graphs.
Konrad K. Dabrowski   +2 more
openaire   +5 more sources

On \delta^(k)-colouring of Powers of Paths and Cycles

open access: yesTheory and Applications of Graphs, 2021
In a proper vertex colouring of a graph, the vertices are coloured in such a way that no two adjacent vertices receive the same colour, whereas in an improper vertex colouring, adjacent vertices are permitted to receive same colours subjected to some ...
Merlin Ellumkalayil, Sudev Naduvath
doaj   +1 more source

Problems and results on graph and hypergraph colouring

open access: greenLe Matematiche, 1990
See directly the article.
Szolt Tuza
doaj   +1 more source

Defective and Clustered Graph Colouring [PDF]

open access: yes, 2018
Consider the following two ways to colour the vertices of a graph where the requirement that adjacent vertices get distinct colours is relaxed. A colouring has "defect" $d$ if each monochromatic component has maximum degree at most $d$.
D. Wood
semanticscholar   +1 more source

Universal H-Colourable Graphs [PDF]

open access: yesGraphs and Combinatorics, 2012
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Broere, Izak, Heidema, Johannes
openaire   +2 more sources

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