Title
An improved Moore bound and some new optimal families of mixed Abelian Cayley graphs
Abstract
We consider the case in which mixed graphs (with both directed and undirected edges) are Cayley graphs of Abelian groups. In this case, some Moore bounds were derived for the maximum number of vertices that such graphs can attain. We first show these bounds can be improved if we know more details about the order of some elements of the generating set. Based on these improvements, we present some new families of mixed graphs. For every fixed value of the degree, these families have an asymptotically large number of vertices as the diameter increases. In some cases, the results obtained are shown to be optimal.
Year
DOI
Venue
2020
10.1016/j.disc.2020.112034
Discrete Mathematics
Keywords
DocType
Volume
Mixed graph,Degree/diameter problem,Moore bound,Cayley graph,Abelian group,Congruences in Zn
Journal
343
Issue
ISSN
Citations 
10
0012-365X
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Dalfó C.100.34
M. A. Fiol281687.28
López N.300.34
Ryan J.400.34