Dual polar graph $\phantom{.}^2 \mathrm{A}_6(2)$

Number of vertices:$891$
Diameter:$3$
Intersection array:$\{42,40,32;1,5,21\}$
Spectrum:$42^1 9^{252} (-3)^{616} (-21)^{22}$
Automorphism group:$\mathrm{P} \Gamma \mathrm{U}(6,2)$
Distance-transitive:Yes
Primitive




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Last updated: 8 August 2024