## Abstract An interval coloring of a graph is a proper edge coloring such that the set of used colors at every vertex is an interval of integers. Generally, it is an NPβhard problem to decide whether a graph has an interval coloring or not. A bipartite graph __G__β=β(__A__,__B__;__E__) is (Ξ±, Ξ²)βb
Biregular subgraphs of biregular graphs
β Scribed by S Sridharan
- Publisher
- Elsevier Science
- Year
- 1987
- Tongue
- English
- Weight
- 103 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0012-365X
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We describe here some properties of a class of graphs which extends the class of distance regular graphs: our graphs are bipartite and for cach vertex there exists an intersection array depending on the stable component of the vertex. Thus our graphs arc to distance regular graphs as bipartite regul
## Abstract An __interval coloring__ of a graph __G__ is a proper coloring of __E__(__G__) by positive integers such that the colors on the edges incident to any vertex are consecutive. A (3,4)β__biregular bigraph__ is a bipartite graph in which each vertex of one part has degree 3 and each vertex
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