Complement of Hoffman-Singleton graph

Number of vertices:$50$
Diameter:$2$
Intersection array:$\{42,6;1,36\}$
Spectrum:$42^1 2^{21} (-3)^{28}$
Automorphism group:$\mathrm{P} \Sigma \mathrm{U}(3,5^2)$
Distance-transitive:Yes
Primitive




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Last updated: 8 February 2017