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A new method to determine isochronous center conditions for polynomial differential systems. (English) Zbl 1034.34032
The authors give a new algorithm to compute period constants of complex polynomial systems, and the set of period constants of real polynomial systems is a spacial case of it. The algorithm is recursive and avoids complex integrating operations and solving equations. As an example of the algorithm, center conditions and isochronous center conditions for a class of higher degree systems have been discussed.

##### MSC:
 34C05 Location of integral curves, singular points, limit cycles (ODE)
##### Keywords:
polynomial differential systems; isochronous center
Full Text:
##### References:
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