Robertson–Wegner graph
In the mathematical field of graph theory, the Robertson–Wegner graph is a 5-regular undirected graph with 30 vertices and 75 edges named after Neil Robertson and Gerd Wegner.[2][3][4]
Robertson–Wegner graph | |
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Named after | Neil Robertson |
Vertices | 30 |
Edges | 75 |
Radius | 3 |
Diameter | 3 |
Girth | 5 |
Automorphisms | 20 |
Chromatic number | 4 |
Chromatic index | 5[1] |
Properties | Cage |
Table of graphs and parameters |
It is one of the four (5,5)-cage graphs, the others being the Foster cage, the Meringer graph, and the Wong graph.
It has chromatic number 4, diameter 3, and is 5-vertex-connected.
References
- Weisstein, Eric W. "Class 2 Graph". MathWorld.
- Weisstein, Eric W. "Robertson–Wegner Graph". MathWorld.
- Bondy, J. A. and Murty, U. S. R. Graph Theory with Applications. New York: North Holland, p. 238, 1976.
- Wong, P. K. "A note on a paper of G. Wegner", Journal of Combinatorial Theory, Series B, 22:3, June 1977, pgs 302-303, doi:10.1016/0095-8956(77)90081-8
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