Corbera Subirana, Montserrat; Llibre, Jaume; Valls, C.
(Springer Verlag, 2016)
We analytically study the Hamiltonian system in
R4 with Hamiltonian
H = 1
2
p2
x
+p2
y + 1
2
ω2
1x2 +ω2
2y2 − εV (x, y)
being V (x, y) = −(x2y + ax3) with a ∈ R, where ε is a
small parameter and ω1 and ω2 ...