Graphical Designs on the Watkins Snark


Graph Info
Vertices 50
Edges 75
Regularity 3
Eigenspaces 21


Spectrum from low to high frequency:

`0, -0.0737^2, -0.091^2, -1.83749^2, -1.82739^2, -1.7222^2, -1.7187^2, -0.316^2, -1.6667^4, -0.3526^2,`
`-1.5949^2, -1.5873^2, -0.5423^2, -0.552^2, -1.3892^2, -0.6667^9, -1.3296^2, -0.8034^2, -0.8195^2, -1.0902^2, -1.019^2`

Optimal Design on the Watkins Snark


Design Info
`k`-graphical design
`k=8`
Efficacy
`5/15`
Optimal yes
Maximal no
Extremal no
1-Neighborhood is the graph no



Maximal Design on the Watkins Snark


Design Info
`k`-graphical design
`k=15`
Efficacy
`25/31`
Optimal no
Maximal yes
Extremal no
1-Neighborhood is the graph yes



Get the code or see Wikipedia for more about the Watkins Snark.