Norton-Smith graph $\cong$ Antipodal 3-cover of $O_7(3)$ graph on 378 vertices

Number of vertices:$1134$
Diameter:$4$
Intersection array:$\{117,80,24,1;1,12,80,117\}$
Spectrum:$117^1 39^{54} (9)^{182} (-3)^{702} (-9)^{195}$
Automorphism group:$3.O_7(3):2 \cong 3.\mathrm{PGO}(7,3)$
Distance-transitive:Yes
Antipodal




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Last updated: 28 February 2024