摘要 : We study the center problem for planar systems with a linear center at the origin that in complex coordinates have a nonlinearity formed by the sum of two monomials. Our first result lists several centers inside this family. To th... 展开
作者 | Gasull~ Armengol Gine~ Jaume Torregrosa~ Joan |
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作者单位 | |
期刊名称 | 《Communications on pure and applied analysis》 |
总页数 | 22 |
语种/中图分类号 | 英语 / O1 |
关键词 | Nondegenerate center Poincare-Lyapunov constants Darboux center Reversible center Holomorphic center Persistent center |
馆藏号 | N2010EPST0001006 |