## Abstract Given a graph Ξ an abelian group __G__, and a labeling of the vertices of Ξ with elements of __G__, necessary and sufficient conditions are stated for the existence of a labeling of the edges in which the label of each vertex equals the product of the labels of its incident edges. Such
Harmonious labelings of windmill graphs and related graphs
β Scribed by D. Frank Hsu
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- English
- Weight
- 115 KB
- Volume
- 6
- Category
- Article
- ISSN
- 0364-9024
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
A strongly harmonious labeling is the nonmodular version of a harmonious labeling. The windmill graph K^(t^)~n~ is the graph consisting of t copies of the complete graph K~n~ with a vertex in common. It is shown that, for t β₯ 1, K^(t^)~n~ is strongly harmonious and so harmonious by drawing on partitions already available from the construction of cyclic neofields. Other irregular windmill graphs can be shown to be strongly harmonious in a similar way.
π SIMILAR VOLUMES
A valuation on a simple graph G IS an assignment of labels to the vertices of G which induces an assignment of labels to the edges of G. pvaluations, also called graceful labelings, and a-valuations, a subclass of graceful labelings, have an extensive literature; harmonious labelings have been intro
The vertex-labeling of graphs with nonnegative integers provides a natural setting in which to study problems of radio channel assignment. Vertices correspond to transmitter locations and their labels to radio channels. As a model for the way in which interference is avoided in real radio systems, e
## Abstract The upper bound for the harmonious chromatic number of a graph given by Zhikang Lu and by C. McDiarmid and Luo Xinhua, independently (__Journal of Graph Theory__, 1991, pp. 345β347 and 629β636) and the lower bound given by D. G. Beane, N. L. Biggs, and B. J. Wilson (__Journal of Graph T
## Abstract Suppose __G__ is a graph, __k__ is a nonβnegative integer. We say __G__ is __k__βantimagic if there is an injection __f__: __E__β{1, 2, β¦, |__E__| + __k__} such that for any two distinct vertices __u__ and __v__, . We say __G__ is weightedβ__k__βantimagic if for any vertex weight functi