On persistent centers Export

@article{citeulike:5684367, abstract = {For real planar autonomous analytic differential equations we introduce the notion of persistent center and show a list of equations with this property. We face the problem of whether our list is exhaustive or not and we prove that it is for several families of planar systems, like cubic or rigid systems.}, author = {Cima, Anna and Gasull, Armengol and Medrado, Jo\~{a}o C.}, citeulike-article-id = {5684367}, citeulike-linkout-0 = {http://dx.doi.org/10.1016/j.bulsci.2008.08.007}, citeulike-linkout-1 = {http://linkinghub.elsevier.com/retrieve/pii/S0007449708000705}, doi = {10.1016/j.bulsci.2008.08.007}, issn = {00074497}, journal = {Bulletin des Sciences Math\'{e}matiques}, keywords = {limit\_cycles, polynomial\_vector\_fields}, month = {September}, number = {6}, pages = {644--657}, posted-at = {2009-08-30 07:29:41}, priority = {2}, title = {On persistent centers}, url = {http://dx.doi.org/10.1016/j.bulsci.2008.08.007}, volume = {133}, year = {2009} }

TY - JOUR ID - citeulike:5684367 L3 - citeulike-article-id:5684367 N2 - For real planar autonomous analytic differential equations we introduce the notion of persistent center and show a list of equations with this property. We face the problem of whether our list is exhaustive or not and we prove that it is for several families of planar systems, like cubic or rigid systems. IS - 6 JF - Bulletin des Sciences Mathématiques SN - 00074497 EP - 657 TI - On persistent centers VL - 133 SP - 644 KW - limit_cycles KW - polynomial_vector_fields AU - Cima, Anna AU - Gasull, Armengol AU - Medrado, João PY - 2009/09// UR - http://dx.doi.org/10.1016/j.bulsci.2008.08.007 ER -