In this paper we determine the centers of quasi-homogeneous polynomial planar vector
fields of degree 0, 1, 2, 3 and 4. In addition, in every case we make a study of the reversibility …

We characterize the centers of the quasi-homogeneous planar polynomial differential
systems of degree three. Such systems do not admit isochronous centers. At most one limit …

In this paper we study the quasi-homogeneous polynomial differential systems and provide
an algorithm for obtaining all these systems with a given degree. Using this algorithm we …

In this paper, we investigate a class of quasi-homogeneous polynomial systems with a given
weight degree. Firstly, by some analytical skills, several properties about this kind of systems …

In this paper, we first classify all centers of a class of quasi-homogeneous polynomial
differential systems of degree 5. Then we extend this kind of systems to a generalized …

In this paper, we estimate the number of limit cycles bifurcating from the periodic orbits of the
weight-homogeneous polynomial centers of weight-degree 3, when they are perturbed …

The quasi-homogeneous polynomial differential systems have been studied from many
different points of view. In this paper, center problem and bifurcation of limit cycles for p: q …

Abstract Denote by CH, CSH, CQH, and CSQH the planar cubic homogeneous, cubic semi-
homogeneous, cubic quasi-homogeneous and cubic semi-quasi-homogeneous differential …

The quasi-homogeneous systems have important properties and they have been studied
from various points of view. In this work, we provide the classification of quasi-homogeneous …

Sufficient and Necessary Center Conditions for the Poincaré Systems P(2, 2n)(n ≤ 5) - Xu - 2011
- Journal of Applied Mathematics - Wiley Online Library Skip to Article Content Skip to Article …