Results 21 to 30 of about 975,970 (227)

Optimal circulant graphs as low-latency network topologies [PDF]

open access: yesJournal of Supercomputing, 2022
Communication latency has become one of the determining factors for the performance of parallel clusters. To design low-latency network topologies for high-performance computing clusters, we optimize the diameters, mean path lengths, and bisection widths
Xiaolong Huang   +2 more
semanticscholar   +1 more source

Combinatorial refinement on circulant graphs [PDF]

open access: yesComputational Complexity, 2022
The combinatorial refinement techniques have proven to be an efficient approach to isomorphism testing for particular classes of graphs. If the number of refinement rounds is small, this puts the corresponding isomorphism problem in a low-complexity ...
Laurence Kluge
semanticscholar   +1 more source

The minimal and maximal energies of all cubic circulant graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2021
In recent article, Zhou and Zhou conjectured that among cubic circulant graphs with n vertices the maximum energy occurs whenever the largest number of components is attained.
Ilhan Hacioglu   +2 more
doaj   +1 more source

State transfer on integral mixed circulant graphs [PDF]

open access: yesDiscrete Mathematics, 2022
A mixed circulant graph is called integral if all eigenvalues of its Hermitian adjacency matrix are integers. The main purpose of this paper is to investigate the existence of perfect state transfer (PST for short) and multiple state transfer (MST for ...
Xingwu Song, Huiqiu Lin
semanticscholar   +1 more source

Quantum state transfer on integral oriented circulant graphs [PDF]

open access: yesApplied Mathematics and Computation, 2022
An oriented circulant graph is called integral if all eigenvalues of its Hermitian adjacency matrix are integers. The main purpose of this paper is to investigate the existence of perfect state transfer ($\PST$ for short) and multiple state transfer ...
Xingwu Song
semanticscholar   +1 more source

Layout of random circulant graphs [PDF]

open access: yesLinear Algebra and its Applications, 2018
A circulant graph H is defined on the set of vertices V=\left\{ 1,\ldots,n\right\} and edges E=\left\{ \left(i,j\right):\left|i-j\right|\equiv s\left(\textrm{mod}n\right),s\in S\right\} , where S\subseteq\left\{ 1,\ldots,\lceil\frac{n-1}{2}\rceil\right\} . A random circulant graph results from deleting edges of H with probability 1-p.
Sebastian Richter, Israel Rocha
openaire   +3 more sources

Characterisation of all integral circulant graphs with multiplicative divisor sets and few eigenvalues

open access: yesJournal of Algebraic Combinatorics, 2023
We present a method which in principal allows to characterise all integral circulant graphs with multiplicative divisor set having a spectrum, i.e. the set of distinct eigenvalues, of any given size.
J. Sander, T. Sander
semanticscholar   +1 more source

On the WL-dimension of circulant graphs of prime power order [PDF]

open access: yesAlgebraic Combinatorics, 2022
The WL-dimension of a graph X is the smallest positive integer m such that the m-dimensional Weisfeiler-Leman algorithm correctly tests the isomorphism between X and any other graph.
Ilia N. Ponomarenko
semanticscholar   +1 more source

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

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