Waclaw Boleslaw Marzantowicz | Adam Mickiewicz University - Polônia
Geometria e topologia de folheações Riemannianas via deformações
| Texto completo | |
| Autor(es): |
Romanovski, Valery G.
;
Fernandes, Wilker
;
Oliveira, Regilene
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Computational and Applied Mathematics; v. 320, p. 61-75, AUG 15 2017. |
| Citações Web of Science: | 6 |
| Resumo | |
We investigate the simultaneous existence of two centers and their isochronicity for two families of planar Z(2)-equivariant differential systems. First, for a family studied by Liu and Li (2011) we present the necessary and sufficient conditions for the existence of an isochronous bi-center. Next, we give conditions for the existence of a bi-center and study its isochronicity for a planar Z(2)-equivariant quintic system having two weak foci or centers. We also give two examples of non-Hamiltonian cubic systems with three isochronous centers. (c) 2017 Elsevier B.V. All rights reserved. (AU) | |
| Processo FAPESP: | 14/00304-2 - Singularidades de aplicações diferenciáveis: teoria e aplicações |
| Beneficiário: | Maria Aparecida Soares Ruas |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |