Octupole McMillan Map

Interactive contours of

\[K_{DO}(p,q,a) = p^2 - a p q + q^2 - p^2 q^2,\]

with

\[a = -\frac{2 \epsilon}{\gamma}.\]

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Contour plot

γ: -1.00
ε: -0.75
contour number: 30
a =