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A hybrid symbolic-numerical approach to the center-focus problem
(2017-09-01)
We propose a new hybrid symbolic-numerical approach to the center-focus problem. The method allowed us to obtain center conditions for a three-dimensional system of differential equations, which was previously not possible ...
Linear type global centers of linear systems with cubic homogeneous nonlinearities
(Rendiconti del Circolo Matematico di Palermo Series 2, 2021)
Centers and limit cycles of vector fields defined on invariant spheres
(Springer, 2021-09-25)
The aim of this paper is the study of the center-focus and cyclicity problems inside the class X of 3-dimensional vector fields that admit a first integral that leaves invariant any sphere centered at the origin. We classify ...
Centers and Limit Cycles of Vector Fields Defined on Invariant Spheres
(2021-12-01)
The aim of this paper is the study of the center-focus and cyclicity problems inside the class X of 3-dimensional vector fields that admit a first integral that leaves invariant any sphere centered at the origin. We classify ...
Rigid centres on the center manifold of tridimensional differential systems
(2021-01-01)
Motivated by the definition of rigid centres for planar differential systems, we introduce the study of rigid centres on the center manifolds of differential systems on ℝ3. On the plane, these centres have been extensively ...
Preferences for Form Focused Vs. Meaning Focused Activities in a Self Access Center
(Universidad de las Américas Puebla, UDLAP, 2018)
The center-focus problem and reversibility
(Academic Press IncSan DiegoEUA, 2001)
Linear type global centers of linear systems with cubic homogeneous nonlinearities
(Rendiconti del Circolo Matematico di Palermo Series 2, 2021)
Problema do centro-foco e ciclicidade de pontos de Hopf para sistemas rígidos tridimensionais
(Universidade Estadual Paulista (Unesp), 2019-07-17)
Este trabalho dedica-se á classificação de centros sobre variedades centrais de sistemas diferenciais polinomiais em R^3 e a bifurcação de ciclos limites a partir destes centros. Restringimos nosso estudo a certas famílias ...