The center problem and composition condition for Abel differential equations

The classical Poincaré center-focus problem for planar polynomial systems of ordinary differential equations can be transformed, in certain particular cases, to the center problem of a trigonometric Abel differential equation. Several research papers focused on the study of the center problem for tr...

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Detalhes bibliográficos
Autores: Giné, Jaume; Grau Montaña, Maite; Santallusia Esvert, Xavier
Tipo de documento: Artigo
Estado:Accepted version
Data de publicação:2015
País:España
Recursos:Universitat de Lleida (UdL)
Repositório:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/56682
Acesso em linha:https://doi.org/10.1016/j.exmath.2015.12.002
http://hdl.handle.net/10459.1/56682
Nível de acesso:Acesso aberto
Palavra-chave:Abel equations
Center problem
Composition condition
Moment conditions
Composition conjecture
Equacions abelianes
Descrição
Resumo:The classical Poincaré center-focus problem for planar polynomial systems of ordinary differential equations can be transformed, in certain particular cases, to the center problem of a trigonometric Abel differential equation. Several research papers focused on the study of the center problem for trigonometric Abel differential equations. Polynomial Abel differential equations are also considered in the literature as a model problem. In this work we make a survey of the most important results in this context and we provide the state of the art of several related conjectures. We give two new results on these conjectures.