Let X be a vertex-transitive graph, that is, the automorphism group Aut(X ) of X is transitive on the vertex set of X . The graph X is said to be symmetric if Aut(X ) is transitive on the arc set of X . Suppose that Aut(X ) has two orbits of the same length on the arc set of X . Then X is said to be
Non-Cayley tetravalent metacirculant graphs and their Hamiltonicity
✍ Scribed by Dac Tan, Ngo
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 792 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0364-9024
No coin nor oath required. For personal study only.
✦ Synopsis
We define three families @Z and @3 of special tetravalent metacirculant graphs and show that any non-Cayley tetravalent metacirculant graph is isomorphic to a union of disjoint copies of a graph in one of the families a2 or as. Using this result we prove further that every connected non-Cayley tetravalent metacirculant graph has a Hamilton Cycle.
📜 SIMILAR VOLUMES
## Abstract In this paper the concepts of Hamilton cycle (HC) and Hamilton path (HP) extendability are introduced. A connected graph Γ is __n__‐__HC‐extendable__ if it contains a path of length __n__ and if every such path is contained in some Hamilton cycle of Γ. Similarly, Γ is __weakly n__‐__HP‐
## Abstract For any __d__⩾5 and __k__⩾3 we construct a family of Cayley graphs of degree __d__, diameter __k__, and order at least __k__((__d__−3)/3)^__k__^. By comparison with other available results in this area we show that our family gives the largest currently known Cayley graphs for a wide ra
## Abstract In 1983, the second author [D. Marušič, Ars Combinatoria 16B (1983), 297–302] asked for which positive integers __n__ there exists a non‐Cayley vertex‐transitive graph on __n__ vertices. (The term __non‐Cayley numbers__ has later been given to such integers.) Motivated by this problem,