Article ID Journal Published Year Pages File Type
5774159 Journal of Differential Equations 2017 19 Pages PDF
Abstract
Since the independence of focal values is a sufficient condition to give a number of limit cycles arising from a center-focus equilibrium, in this paper we consider a restricted independence to a parametric curve, which gives a method not only to increase the lower bound for the cyclicity of the center-focus equilibrium but also to be available when those focal values are not independent. We apply this method to a nondegenerate cubic center-focus variety and prove that the cyclicity reaches its an upper bound.
Related Topics
Physical Sciences and Engineering Mathematics Analysis
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