Brouwer–Haemers graph
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Brouwer–Haemers graph | |
---|---|
200px | |
Vertices | 81 |
Edges | 810 |
Radius | 2 |
Diameter | 2 |
Girth | 3 |
Automorphisms | 233,280 |
Chromatic number | 7 |
Properties | Strongly regular |
In the mathematical field of graph theory, the Brouwer–Haemers graph is a 20-regular undirected graph with 81 vertices and 810 edges. It is the unique strongly regular graph with parameters (81, 20, 1, 6).