## Abstract Let __G__ be a 2βconnected graph of order __n.__ We show that if for each pair of nonadjacent vertices __x__,__y__ β __V(G)__, then __G__ is Hamiltonian.
On several symmetry conditions for graphs
β Scribed by Xingxing Yu
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 524 KB
- Volume
- 102
- Category
- Article
- ISSN
- 0012-365X
No coin nor oath required. For personal study only.
β¦ Synopsis
On several symmetry conditions for graphs, Discrete Mathematics 102 (1992) 51-59.
In this paper we deal with simple graphs. We investigate vertex-transitivity, edge-transitivity and symmetry of graphs, especially the relationships among them. We first give an equivalent condition for a graph to be vertex-transitive.
Then we show that there is an infinite class of graphs whose edge-transitivity is equivalent to symmetry. Also we shall give a positive answer to a special case of a question by Holton.
π SIMILAR VOLUMES
Results of LovΓ‘sz and Padberg entail that the class of so-called partitionable graphs contains all the potential counterexamples to Berge's famous Strong Perfect Graph Conjecture, which asserts that the only minimal imperfect graphs are the odd chordless cycles with at least five vertices (''odd hol