Navegando por Autor "Fernandes, W."
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- ItemBi-center problem for some classes of Z2-equivariant systems.(2016-09) Romanovski, V.G.; Fernandes, W.; Oliveira, Regilene Delazari dos SantosWe investigate the simultaneous existence of two centers (bi-center) for two families of planar Z2-equivariant differential systems.
- ItemFirst integrals of the may-Leonard asymmetric system.(2017-05) Antonov, V.; Fernandes, W.; Romanovski, V.G.; Shcheglova, N.L.For the May-Leonard asymmetric system, which is a quadratic Lotka-Voltera system depending on six parameters, we frst look for systems admitting invariant algebraic surfaces of degree two.