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Hopf bifurcation for nonsmooth Liénard systems. (English) Zbl 1176.34047

Summary: The Hopf cyclicity of nonsmooth Liénard systems on the plane is studied and an algebraic method to find the Hopf cyclicity is presented. A sufficient and necessary condition which ensures the origin being a center is obtained. Some new and interesting applications are presented.

MSC:

34C23 Bifurcation theory for ordinary differential equations
34C05 Topological structure of integral curves, singular points, limit cycles of ordinary differential equations
34C20 Transformation and reduction of ordinary differential equations and systems, normal forms
34C14 Symmetries, invariants of ordinary differential equations
Full Text: DOI

References:

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