We take the following representation for Chua's electronic circuit:

$$

\left\{

\begin{array}{rcl}

\dot{x}_1 & = & \alpha (x_2 - x_1 - f(x_1)) \\

\dot{x}_2 & = & x_1 - x_2 + x_3 \\

\dot{x}_3 & = & - \beta x_2

\end{array}

\right.

$$

with nonlinear characteristic

$$

f(x_1) =b x_1 +\frac{1}{2} (a-b) ( \| x_1+1 \| - \| x_1 - 1 \| ) \, .

$$

It is possible to have a Hamilton-Poisson realisation for this Chua’s system?

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