Results 11 to 20 of about 6,790 (196)

On Embeddings of Circulant Graphs [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2015
A circulant of order $n$ is a Cayley graph for the cyclic group $\mathbb{Z}_n$, and as such, admits a transitive action of $\mathbb{Z}_n$ on its vertices. This paper concerns 2-cell embeddings of connected circulants on closed orientable surfaces.
Conder, Marston, Grande, Ricardo
openaire   +3 more sources

Domination in Cayley graphs: A survey

open access: yesAKCE International Journal of Graphs and Combinatorics, 2019
Let be a symmetric generating set of a finite group . Assume that be such that and satisfies the two conditions : the identity element and : if , then Given satisfying and define a Cayley graph with and .
T. Tamizh Chelvam, M. Sivagami
doaj   +2 more sources

Achromatic Numbers for Circulant Graphs and Digraphs

open access: yesDiscussiones Mathematicae Graph Theory, 2021
In this paper, we determine the achromatic and diachromatic numbers of some circulant graphs and digraphs each one with two lengths and give bounds for other circulant graphs and digraphs with two lengths.
Araujo-Pardo Gabriela   +3 more
doaj   +1 more source

HS-integral and Eisenstein integral mixed circulant graphs

open access: yesTheory and Applications of Graphs, 2023
A mixed graph is called \emph{second kind hermitian integral} (\emph{HS-integral}) if the eigenvalues of its Hermitian-adjacency matrix of the second kind are integers.
Monu Kadyan, Bikash Bhattacharjya
doaj   +1 more source

Parameters of Integral Circulant Graphs and Periodic Quantum Dynamics [PDF]

open access: yes, 2007
The intention of the paper is to move a step towards a classification of network topologies that exhibit periodic quantum dynamics. We show that the evolution of a quantum system, whose hamiltonian is identical to the adjacency matrix of a circulant ...
Centrum Voor Wiskunde En Informatica   +3 more
core   +3 more sources

Automorphism Groups of Rational Circulant Graphs [PDF]

open access: yesThe Electronic Journal of Combinatorics, 2012
The paper concerns the automorphism groups of Cayley graphs over cyclic groups which have a rational spectrum (rational circulant graphs for short). With the aid of the techniques of Schur rings it is shown that the problem is equivalent to consider the automorphism groups of orthogonal group block structures of cyclic groups.
Klin, Mikhail, Kovács, István
openaire   +3 more sources

Block circulant graphs and the graphs of critical pairs of crowns

open access: yesElectronic Journal of Graph Theory and Applications, 2019
In this paper, we provide a natural bijection between a special family of block circulant graphs and the graphs of critical pairs of the posets known as generalized crowns.
Rebecca E. Garcia   +3 more
doaj   +1 more source

The Regularity of Some Families of Circulant Graphs

open access: yesMathematics, 2019
We compute the Castelnuovo−Mumford regularity of the edge ideals of two families of circulant graphs, which includes all cubic circulant graphs.
Miguel Eduardo Uribe-Paczka   +1 more
doaj   +1 more source

Asymptotic energy of connected cubic circulant graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2021
In this article, we compute the oblique asymptote of the energy function for all connected cubic circulant graphs. Moreover, we show that this oblique asymptote is an upper bound for the energies of two of the subclasses of Möbius ladder graphs and lower
Alper Bulut, Ilhan Hacioglu
doaj   +1 more source

On Hamilton decompositions of infinite circulant graphs [PDF]

open access: yes, 2017
The natural infinite analogue of a (finite) Hamilton cycle is a two-way-infinite Hamilton path (connected spanning 2-valent subgraph). Although it is known that every connected 2k-valent infinite circulant graph has a two-way-infinite Hamilton path ...
Bryant, Darryn   +3 more
core   +2 more sources

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