The issue of when two Cayley digraphs on different abelian groups of prime power order can be isomorphic is examined. This had previously been determined by Anne Joseph for squares of primes; her results are extended.
On the Isomorphisms of Cayley Graphs of Abelian Groups
โ Scribed by Yan-Quan Feng; Yan-Pei Liu; Ming-Yao Xu
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- English
- Weight
- 190 KB
- Volume
- 86
- Category
- Article
- ISSN
- 0095-8956
No coin nor oath required. For personal study only.
โฆ Synopsis
Let G be a finite group, S a subset of G=f1g; and let Cay รฐG; Sร denote the Cayley digraph of G with respect to S: If, for any subset T of G=f1g; CayรฐG; Sร ffi CayรฐG; T ร implies that S a ยผ T for some a 2 AutรฐGร; then S is called a CI-subset. The group G is called a CIM-group if for any minimal generating subset S of G; S [ S ร1 is a CI-subset. In this paper, CIM-abelian groups are characterized. # 2002 Elsevier Science (USA)
๐ SIMILAR VOLUMES
A Cayley graph Cay(G, S) of a group G is called a CI-graph if whenever T is another subset of G for which Cay(G, S) โผ = Cay(G, T ), there exists an automorphism ฯ of G such that S ฯ = T . For a positive integer m, the group G is said to have the m-CI property if all Cayley graphs of G of valency m a
A Cayley graph or digraph Cay(G, S) of a finite group G is called a CI-graph of G if, for any T/G, Cay(G, S)$Cay(G, T) if and only if S \_ =T for some \_ # Aut(G). We study the problem of determining which Cayley graphs and digraphs for a given group are CI-graphs. A finite group G is called a conne
Alspach has conjectured that any 2k-regular connected Cayley graph cay(A, S) on a finite abelian group A can be decomposed into k hamiltonian cycles. In this paper, the conjecture is shown to be true if S=[s 1 , s 2 , ..., s k ] is a minimal generating set of an abelian group A of odd order (where a
## Abstract In this paper the concepts of Hamilton cycle (HC) and Hamilton path (HP) extendability are introduced. A connected graph ฮ is __n__โ__HCโextendable__ if it contains a path of length __n__ and if every such path is contained in some Hamilton cycle of ฮ. Similarly, ฮ is __weakly n__โ__HPโ
Let G be a finite group, and let Cay(G, S) be a Cayley digraph of G. If, for all T โ G, Cay(G, S) โผ = Cay(G, T ) implies S ฮฑ = T for some ฮฑ โ Aut(G), then Cay(G, S) is called a CI-graph of G. For a group G, if all Cayley digraphs of valency m are CI-graphs, then G is said to have the m-DCI property;