Results 31 to 40 of about 587,527 (280)
On edge product cordial graphs [PDF]
Opuscula Mathematica, 2019 An edge product cordial labeling is a variant of the well-known cordial labeling. In this paper we characterize graphs admitting an edge product cordial labeling.
Jaroslav Ivančo
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End-regularity of generalized bicycle graph
AKCE International Journal of Graphs and Combinatorics, 2020 A graph G is called End-regular, if every endomorphism of G is regular as a monoid. In this article, we investigate End-regularity of bicycle graphs.
A. Rajabi, A. Erfanian, A. Azimi
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Games, 2020 We study the emergence of cooperation in structured populations with any arrangement of cooperators and defectors on the evolutionary graph. In a computational approach using structure coefficients defined for configurations describing such arrangements ...
Hendrik Richter
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On single-valued co-neutrosophic graphs [PDF]
Neutrosophic Sets and Systems, 2018 In this paper, we introduce the notion of a single-valued co-neutrosophic graphs and study some methods of construction of new single-valued co-neutrosophic graphs.
R. Dhavaseelan +3 more
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Regular Partitions of Regular Graphs [PDF]
Canadian Mathematical Bulletin, 1978 In the study of the combinatorial structure of edge-graphs of convex polytopes one may ask whether a given graph possesses a partition consisting of certain kinds of subgraphs.In this paper we describe some special partitions of 3-valent and 4-valent graphs.
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New concepts of regular and (highly) irregular vague graphs with applications
Fuzzy Information and Engineering, 2017 In this paper, some types of vague graphs are introdaced such as dm-regular, tdm-regular, m-highly irregular and m-highly totally irregular vague graphs are introduced and some properties of them are discussed.
Elham Darabian +3 more
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Existence of Regular Nut Graphs for Degree at Most 11
Discussiones Mathematicae Graph Theory, 2020 A nut graph is a singular graph with one-dimensional kernel and corresponding eigenvector with no zero elements. The problem of determining the orders n for which d-regular nut graphs exist was recently posed by Gauci, Pisanski and Sciriha.
Fowler Patrick W. +4 more
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Edge Regular Graph Products [PDF]
The Electronic Journal of Combinatorics, 2013 A regular nonempty graph $\Gamma$ is called edge regular, whenever there exists a nonegative integer $\lambda_{\Gamma}$, such that any two adjacent vertices of $\Gamma$ have precisely $\lambda_{\Gamma}$ common neighbours. An edge regular graph $\Gamma$ with at least one pair of vertices at distance 2 is called amply regular, whenever there exists a ...
Frelih, Boštjan, Miklavič, Štefko
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On Automorphisms of a Distance-Regular Graph with Intersection Array {125,96,1;1,48,125} [PDF]
Учёные записки Казанского университета: Серия Физико-математические науки, 2017 J. Koolen posed the problem of studying distance-regular graphs in which neighborhoods of vertices are strongly regular graphs with the second eigenvalue ≤ t for the given positive integer t.
V.V. Bitkina, A.A. Makhnev
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On pseudo regular spherical fuzzy graphs
Ratio Mathematica, 2023 In this paper, pseudo regular and totally pseudo regular spherical fuzzy graphs are defined using pseudo degree and total pseudo degree of a vertex. A necessary and sufficient condition for pseudo regular spherical fuzzy graph is given.
B Mohamed Harif, A Nazeera Begam
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