Incidence graph of biplane on 11 points

Number of vertices:$22$
Diameter:$3$
Intersection array:$\{5,4,3;1,2,5\}$
Spectrum:$5^1 (\sqrt{3})^{10} (-\sqrt{3})^{10} (-5)^1$
Automorphism group:$\mathrm{PGL}(2,11)$
Distance-transitive:Yes
Bipartite




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Last updated: 1 February 2017