Sextupole McMillan Map

Interactive contours of

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

with

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

---

Contour plot

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