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@inproceedings{ZHENGDONG2009OnTC, title={On the Critical Periods of Liénard Systems with Cubic Restoring Forces}, author={DU ZHENGDONG}, year={2009} }

- Published 2009

We study local bifurcations of critical periods in the neighborhood of a nondegenerate center of a Liénard system of the form ẋ = −y + F(x), ẏ = g(x), where F(x) and g(x) are polynomials such that deg(g(x)) ≤ 3, g(0) = 0, and g′(0) = 1, F(0) = F ′(0) = 0 and the system always has a center at (0,0). The set of coefficients of F(x) and g(x) is split into two… CONTINUE READING

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