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Linear estimate of the number of zeros of Abelian integrals for quadratic centers having almost all their orbits formed by cubics

赵育林;张芷芬;李伟固;李承治

  We study the number of zeros of Abelian integrals for the quadratic centers having almost all their orbits formed by cubics, when we perturb such systems inside the class of all polynomial systems of degree……   
[关键词]:Abelian integrals;quadratic integrable system.
[文献类型]:期刊
[文献出处]: 《Science in China2002年08期 Ser.A2002年08期