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Theory and Modern Applications

Table 1 The distribution of equilibrium of system (1)

From: Zero-Hopf bifurcation and Hopf bifurcation for smooth Chua’s system

α

β

γ

b

c

Distribution of equilibrium

= 0

≠0

≠0

  

Plane \((\frac{(\beta+\gamma)y}{\gamma },y,-\frac{\beta y}{\gamma})\)

= 0

= 0

≠0

  

Plane (x,x,0)

= 0

≠0

= 0

  

Plane (x,0,−x)

= 0

= 0

= 0

  

Plane (x,y,−x + y)

≠0

= 0

≠0

\(4-4b+c^{2}\geqslant0\)

\(E_{0}=(0, 0, 0)\) and \(E^{1}_{\pm}\)

≠0

= 0

≠0

\(4-4b+c^{2}<0\)

Unique \(E_{0}=(0, 0, 0)\)

≠0

= 0

= 0

  

Surface \((x, x(b+cx+x^{2}), x(-1+b+cx+x^{2}))\)

≠0

≠0

= 0

\(-4b+c^{2}\geqslant0\)

Unique \(E_{0}=(0, 0, 0)\) and \(E^{2}_{\pm}\)

≠0

≠0

= 0

\(-4b+c^{2}<0\)

\(E_{0}=(0, 0, 0)\)

≠0

≠0

≠0

\(A_{0}\geqslant0\)

Unique \(E_{0}=(0, 0, 0)\)

≠0

≠0

≠0

\(A_{0}<0\)

\(E_{0}=(0, 0, 0)\) and \(E_{\pm }\)