## Abstract The generalized Petersen graph __P__(6__k__ + 3, 2) has exactly 3 Hamiltonian cycles for __k__ ≥ 0, but for __k__ ≥ 2 is not uniquely edge colorable. This disproves a conjecture of Greenwell and Kronk [1].
Hamiltonian weights and unique 3-edge-colorings of cubic graphs
✍ Scribed by Cun-Quan Zhang
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 402 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0364-9024
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
A (1,2)‐eulerian weight w of a grph is hamiltonian if every faithful cover of w is a set of two Hamilton circuits. Let G be a 3‐connected cubic graph containing no subdivition of the Petersen graph. We prove that if G admits a hamiltonian weight then G is uniquely 3‐edge‐colorable. © 1996 John Wiley & Sons, Inc.
📜 SIMILAR VOLUMES
In this paper we present a short algebraic proof for a generalization of a formula of R. Penrose, Some applications of negative dimensional tensors, in: Combinatorial Mathematics and its Applications Welsh (ed.), Academic Press, 1971, pp. 221-244 on the number of 3-edge colorings of a plane cubic gr
## Abstract We construct 3‐regular (cubic) graphs __G__ that have a dominating cycle __C__ such that no other cycle __C__~1~ of __G__ satisfies __V(C)__ ⊆ __V__(__C__~1~). By a similar construction we obtain loopless 4‐regular graphs having precisely one hamiltonian cycle. The basis for these const