Results 31 to 40 of about 305,530 (267)

GCD-graphs and NEPS of complete graphs

open access: yesArs Mathematica Contemporanea, 2012
A gcd-graph is a Cayley graph over a finite abelian group defined by greatest common divisors. Such graphs are known to have integral spectrum. A non-complete extended p-sum, or NEPS in short, is well-known general graph product. We show that the class of gcd-graphs and the class of NEPS of complete graphs coincide.
Klotz, Walter, Sander, Torsten
openaire   +3 more sources

m-Bonacci graceful labeling

open access: yesAKCE International Journal of Graphs and Combinatorics, 2021
We introduce new labeling called m-bonacci graceful labeling. A graph G on n edges is m-bonacci graceful if the vertices can be labeled with distinct integers from the set such that the derived edge labels are the first n m-bonacci numbers.
Kalpana Mahalingam   +1 more
doaj   +1 more source

The local vertex anti-magic coloring for certain graph operations

open access: yesHeliyon
This work proves the local vertex anti-magic coloring of even regular circulant bipartite graphs C(m;L). Let G be either Kr,r or Kr,r−F, F is a 1-factor.
L. Uma, G. Rajasekaran
doaj   +1 more source

The Coloring Graph of Complete Graphs

open access: yesThe PUMP Journal of Undergraduate Research, 2019
We study the coloring graph of the family of complete graphs and we prove that Cn(Kt) is regular, transitive, and connected when n>t. Also, we study whether Cn(Kt) is distance transitive or strongly regular, and find its diameter.
openaire   +2 more sources

Generalized Fractional Total Colorings of Complete Graph

open access: yesDiscussiones Mathematicae Graph Theory, 2013
An additive and hereditary property of graphs is a class of simple graphs which is closed under unions, subgraphs and isomorphism. Let P and Q be two additive and hereditary graph properties and let r, s be integers such that r ≥ s Then an fractional (P,
Karafová Gabriela
doaj   +1 more source

Complete multipartite graphs of non-QE class

open access: yesElectronic Journal of Graph Theory and Applications, 2023
We derive a formula for the QE constant of a complete multipartite graph and determine the complete multipartite graphs of non-QE class, namely, those which do not admit quadratic embeddings in Euclidean spaces.
Nobuaki Obata
doaj   +1 more source

Decomposition of the completer-graph into completer-partiter-graphs

open access: yesGraphs and Combinatorics, 1986
Let \(K_ r(n)\) be a complete r-partite hypergraph with n vertices. By \(f_ r(n)\) is denoted the minimal number q of pairwise edge-disjoint r- partite complete r-uniform hypergraphs which cover all edges of \(K_ r(n).\) In the paper is given an asymptotic value of the \(f_ r(n)\). For every fixed \(r\geq 1\) exist two positive numbers \(c_ 1(r)\) and \
openaire   +2 more sources

Research of NP-Complete Problems in the Class of Prefractal Graphs

open access: yesMathematics, 2021
NP-complete problems in graphs, such as enumeration and the selection of subgraphs with given characteristics, become especially relevant for large graphs and networks.
Rasul Kochkarov
doaj   +1 more source

Dataflow graphs as complete causal graphs

open access: yes2023 IEEE/ACM 2nd International Conference on AI Engineering – Software Engineering for AI (CAIN), 2023
Accepted to 2nd International Conference on AI Engineering - Software Engineering for AI (CAIN 23)
Andrei Paleyes   +3 more
openaire   +3 more sources

On Resolvability- and Domination-Related Parameters of Complete Multipartite Graphs

open access: yesMathematics, 2022
Graphs of order n with fault-tolerant metric dimension n have recently been characterized.This paper points out an error in the proof of this characterization. We show that the complete multipartite graphs also have the fault-tolerant metric dimension n,
Sakander Hayat, Asad Khan, Yubin Zhong
doaj   +1 more source

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