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20172020
most citedNew lower bound for the number of critical periods for planar polynomial systems

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math.CA2017

Limit cycles by perturbing quadratic isochronous centers inside piecewise smooth polynomial differential systems

Xiuli Cen, Lijun Yang, Meirong Zhang

In the present paper, we study the number of zeros of the first order Melnikov function for piecewise smooth polynomial differential system, to estimate the number of limit cycles…