## Abstract We prove that every connected vertexβtransitive graph on __n__ β₯ 4 vertices has a cycle longer than (3__n__)^1/2^. The correct order of magnitude of the longest cycle seems to be a very hard question.
Hamiltonian cycles and paths in vertex-transitive graphs with abelian and nilpotent groups
β Scribed by Marc J. Lipman
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 378 KB
- Volume
- 54
- Category
- Article
- ISSN
- 0012-365X
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β¦ Synopsis
In 1968, L. Lovfisz conjectured that every connected, vertex-transitive graph had a Hamiltonian path. In this paper the following results are proved: (1) If a connected graph has a transitive nilpotent group acting on it, then the graph has a Hamiltonian path; (2) a connected, vertex-transitive graph with a prime power number of vertices has a Hamiltonian path.
π SIMILAR VOLUMES
A digraph D is called a quasi-transitive digraph (QTD) if for any triple x,y,z of distinct vertices of D such that (x,y) and (y,z) are arcs of D there is at least one at': from x to z or from z to x. Solving a conjecture by Bangdensen and Huang (1995), Gutin (1995) described polynomial algorithms fo
Cayley graphs arise naturally in computer science, in the study of word-hyperbolic groups and automatic groups, in change-ringing, in creating Escher-like repeating patterns in the hyperbolic plane, and in combinatorial designs. Moreover, Babai has shown that all graphs can be realized as an induced
## Abstract In this paper the concepts of Hamilton cycle (HC) and Hamilton path (HP) extendability are introduced. A connected graph Ξ is __n__β__HCβextendable__ if it contains a path of length __n__ and if every such path is contained in some Hamilton cycle of Ξ. Similarly, Ξ is __weakly n__β__HPβ
## Abstract Let __G__ be a simple graph of order __n__ and minimal degree >βcn (0β<βcβ<β1/2). We prove that (1) There exist __n__~0~β=β__n__~0~(__c__) and __k__β=β__k__(__c__) such that if __n__β>β__n__~0~ and __G__ contains a cycle __C__~__t__~ for some __t__β>β2__k__, then __G__ contains a cycle
Consider the subset graph G(n, k) whose vertex set C(n, k) is the set of all n-tuples of 'O's' and 'l's' with exactly k 'I's'. Let an edge exist between two vertices a and b in G(n,k) if and only if a can be transformed into b by the interchange of two adjacent coordinate values, with the first and