Graphical Designs on the Brouwer-Haemers Graph


Graph Info
Vertices 81
Edges 810
Regularity 10
Eigenspaces 3


Spectrum from low to high frequency:

`0, (-1.35)^{20}, (-.9)^{60}`

Brouwers-Haemers Graph


Design Info
`k`-graphical design
`k=2`
Efficacy
`9/21`
Optimal yes
Maximal yes
Extremal yes
1-Neighborhood is the graph yes



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