Let S be an arbitrary collection of stars in a graph G such that there is no chain of length ~3 joining the centers of (any) two stars in G. We consider the graphs that can be obtained by deleting in a parity graph all the edges of such a set S. These graphs will be called skeletal graphs and we pro
A new class of perfect Hoàng graphs
✍ Scribed by Irena Rusu
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 314 KB
- Volume
- 145
- Category
- Article
- ISSN
- 0012-365X
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## Abstract A b‐coloring is a coloring of the vertices of a graph such that each color class contains a vertex that has a neighbor in all other color classes, and the b‐chromatic number of a graph __G__ is the largest integer __k__ such that __G__ admits a b‐coloring with __k__ colors. A graph is b