Johnson graph $J(7,2)$

The complement of this graph is the Kneser graph $\mathrm{K}(7,2)$.

Number of vertices:$21$
Diameter:$2$
Intersection array:$\{10,4;1,4\}$
Spectrum:$10^1 3^6 (-2)^{14}$
Automorphism group:$\mathrm{S}_7$
Distance-transitive:Yes
Primitive




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Last updated: 23 July 2024