A cubic system with thirteen limit cycles☆
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Keywords
Cubic system
Limit cycles
Abelian integral
Hilbert's 16th problem
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This work is partially supported by grants NSFC 10671005 and NSFC 10831003 (C. Li), China Postdoctoral Science Foundation and NSFC 10871006 (C. Liu), and by grants NSFC 10571002, NSFC 10871006 and NSF of Beijing 1072002 (J. Yang).
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