$\text{Brouwer-Haemers Graph}$

This is the coset graph of the truncated ternary Golay code.

 Number of vertices: $81$ Diameter: $2$ Intersection array: $\{20,18;1,6\}$ Spectrum: $20^1 2^{60} (-7)^{20}$ Automorphism group: $3^4:2. \text{P} \Gamma \text{L}(2,9)$ Distance-transitive: $\text{Yes}$ Primitive

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Last updated: 21 May 2019