Results 31 to 40 of about 174 (114)

The non-commuting graph of a non-central hypergroup

open access: yesOpen Mathematics, 2019
The aim of this paper is to construct and study the properties of a certain graph associated with a non-central hypergroup, i.e. a hypergroup having non-commutative the associated fundamental group.
Iranmanesh Mahdiyeh   +2 more
doaj   +1 more source

On finite dual Cayley graphs

open access: yesOpen Mathematics, 2020
A Cayley graph Γ\Gamma on a group G is called a dual Cayley graph on G if the left regular representation of G is a subgroup of the automorphism group of Γ\Gamma (note that the right regular representation of G is always an automorphism group of Γ ...
Pan Jiangmin
doaj   +1 more source

Path homology theory of edge-colored graphs

open access: yesOpen Mathematics, 2021
In this paper, we introduce the category and the homotopy category of edge-colored digraphs and construct the functorial homology theory on the foundation of the path homology theory provided by Grigoryan, Muranov, and Shing-Tung Yau.
Muranov Yuri V., Szczepkowska Anna
doaj   +1 more source

A new monoid construction under crossed products proceedings of the international congress in honour of professor Hari M. Srivastava

open access: yes, 2013
In this paper we define a new monoid construction under crossed products for given monoids. We also present a generating set and a relator set for this product. Finally, we give the necessary and sufficient conditions for the regularity of it. MSC: 05C10,
Cangül, İ. N.   +3 more
core   +1 more source

Finite groups whose intersection power graphs are toroidal and projective-planar

open access: yesOpen Mathematics, 2021
The intersection power graph of a finite group GG is the graph whose vertex set is GG, and two distinct vertices xx and yy are adjacent if either one of xx and yy is the identity element of GG, or ⟨x⟩∩⟨y⟩\langle x\rangle \cap \langle y\rangle is non ...
Li Huani, Ma Xuanlong, Fu Ruiqin
doaj   +1 more source

Dominance, dependence and interdependence in linear structures. A theoretical model and an application to the international trade flows

open access: yes, 2013
Classification AMS : 05 - Combinatorics for finite fields/05C - Graphs theory for applications of graphs/05C25 - Graphs and groups 05 - Combinatorics for finite fields/05C - Graphs theory for applications of graphs/05C69 - Dominating sets, independent ...
Lantner, Roland, Lebert, Didier
core   +3 more sources

Distinguishing Cartesian Products of Countable Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2017
The distinguishing number D(G) of a graph G is the minimum number of colors needed to color the vertices of G such that the coloring is preserved only by the trivial automorphism.
Estaji Ehsan   +4 more
doaj   +1 more source

Green's graphs of a semigroup

open access: yesOpen Mathematics
Let SS be a semigroup. In this study, we first introduce the Green’s digraphs and Green’s graphs related to the Green’s relations L{\mathscr{L}}, R{\mathscr{R}}, and J{\mathscr{J}} of SS.
Cheng Yanliang, Shao Yong, Ma Xuanlong
doaj   +1 more source

Analysis of the Wiener Index for Graph Families Generated by Subdivision‐Based Double Join and Double Corona Products

open access: yesJournal of Applied Mathematics, Volume 2026, Issue 1, 2026.
Among the diverse types of graph products, the double join and double corona operations have remained central to many recent developments in graph theory, offering fresh insights and problem‐solving strategies. Subdivision graphs, in particular, serve as an essential tool for examining how structural modifications along edges influence the overall ...
M. Vimal   +3 more
wiley   +1 more source

The Binding Number of a Zero Divisor Graph [PDF]

open access: yes, 2013
In this paper, we evaluate b(Γ(Z n )). Our main result is, we give maximum value of b(Γ(Z n )) is 0.99999999796427626489236243072661, where n is any positive integer upto fiftieth million.
J Ravi Sankar   +3 more
core  

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