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| Home > Articles > Published articles > Polynomial Liénard systems with a nilpotent global center |
(Universitat de Lleida. Departament de Matemàtica) (Universitat de Lleida. Departament de Matemàtica)| Date: | 2023 |
| Abstract: | A center for a differential system x˙ = f(x) in R2 is a singular point p having a neighborhood U such that U \ {p} is filled with periodic orbits. A global center is a center p such that R2 \ {p} is filled with periodic orbits. There are three kinds of centers, the centers p such that the Jacobian matrix Df(p) has purely imaginary eigenvalues, the nilpotent centers p such that Df(p) is a nilpotent matrix, and the degenerate centers p such that the matrix Df(p) is the zero matrix. For the first class of centers there are several works studying when such centers are global. As far as we know there are no works for studying the nilpotent global centers. One of the most studied classes of differential systems in R2 are the polynomial Liénard differential systems. The objective of this paper is to study the nilpotent global centers of the polynomial Liénard differential systems. |
| Grants: | European Commission 777911 Agencia Estatal de Investigación PID2019-104658GB-I00 Agencia Estatal de Investigación PID2020-113758GB-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-1276 |
| Rights: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.  |
| Language: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Subject: | Center ; Global center ; Periodic orbits ; Nilpotent singularity |
| Published in: | Rendiconti del Circolo Matematico di Palermo, Vol. 72, Issue 7 (November 2023) , p. 3625-3636, ISSN 1973-4409 |
