In this short note the neighbourhood graph of a Cayley graph is considered. It has, as nodes, a symmetric generating set of a finitely-generated group . Two nodes are connected by an edge if one is obtained from the other by multiplication on the right by one of the generators. Two necessary conditi
Routing in a Class of Cayley Graphs of Semidirect Products of Finite Groups
β Scribed by Fen Lin Wu; S. Lakshmivarahan; S.K. Dhall
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 374 KB
- Volume
- 60
- Category
- Article
- ISSN
- 0743-7315
No coin nor oath required. For personal study only.
β¦ Synopsis
Recently, Draper initiated the study of interconnection networks based on Cayley graphs of semidirect products of two cyclic groups called supertoroids. Interest in this class of graphs stems from their relatively smaller diameter compared to toroids of the same size. The Borel graphs introduced by Arden and Tang are a family of Cayley graphs based on a special class of matrix groups. In this paper, we describe a deterministic, distributed routing scheme for supertoroids. While we do not have a proof of correctness of our scheme, experimental evidence leads to a natural conjecture that our scheme is a shortest path routing algorithm. By proving the similarities among supertoroids, Borel graphs, and metacyclic graphs, this routing scheme is then extended to Borel graphs.
π SIMILAR VOLUMES
## Abstract We find all possible lengths of circuits in Cayley digraphs of twoβgenerated abelian groups over the twoβelement generating sets and over certain threeβelement generating sets.
An example of an E-unitary regular semigroup is presented which is not embeddable into a semidirect product of a band by a group. This solves an w embeddability problem raised by M. B. Szendrei in Proc. Roy. Soc. Edinburgh Ε½ . Ε½ . x 106 A 1987 , 89α102 .
This paper completes the determination of all integers of the form pqr (where p, q, and r are distinct primes) for which there exists a vertex-transitive graph on pqr vertices which is not a Cayley graph.