Let x˙=P(x,y), y˙=Q(x,y) be a differential system with P and Q real polynomials, and let d=max{degP,degQ}. A singular point p of this differential system is a global center if R2∖{p} is filled with periodic orbits. We prove that if d is even then the polynomial differential systems have no global centers
In this paper, we characterize the global nilpotent centers of polynomial differential systems of th...
AbstractIn this paper we classify the centers localized at the origin of coordinates, and their isoc...
We characterize the centers of the quasi-homogeneous planar polynomial differential systems of degre...
Let x˙=P(x,y), y˙=Q(x,y) be a differential system with P and Q real polynomials, and let d=max{degP...
A center p of a differential system in R2 is global if R2\ { p} is filled of periodic orbits. It is ...
A center p of a differential system in R2 is global if R2\ { p} is filled of periodic orbits. It is ...
The global centers started to be studied seriously at the end of the XX century. In the last decades...
A center for a differential system x˙=f(x) in R2 is a singular point p having a neighborhood U such ...
Abstract. We consider the class of polynomial differential equations x ̇ = Pn(x, y)+Pn+1(x, y) +Pn+2...
In this paper we study the center problem for polynomial differential systems and we prove that any ...
<正> We consider the class of polynomial differential equations x = -y+Pn(x,y), y = x + Qn(x, y...
AbstractWe consider the class of polynomial differential equations x˙ Pn(x,y)+Pn+1(x,y)+Pn+2(x,y), y...
In this paper we investigate the center problem for the discontinuous piecewise smooth quasi-homogen...
A polynomial differential system of degree 2 has no global centers (that is, centers defined in all ...
A polynomial differential system of degree 2 has no global centers (that is, centers defined in all ...
In this paper, we characterize the global nilpotent centers of polynomial differential systems of th...
AbstractIn this paper we classify the centers localized at the origin of coordinates, and their isoc...
We characterize the centers of the quasi-homogeneous planar polynomial differential systems of degre...
Let x˙=P(x,y), y˙=Q(x,y) be a differential system with P and Q real polynomials, and let d=max{degP...
A center p of a differential system in R2 is global if R2\ { p} is filled of periodic orbits. It is ...
A center p of a differential system in R2 is global if R2\ { p} is filled of periodic orbits. It is ...
The global centers started to be studied seriously at the end of the XX century. In the last decades...
A center for a differential system x˙=f(x) in R2 is a singular point p having a neighborhood U such ...
Abstract. We consider the class of polynomial differential equations x ̇ = Pn(x, y)+Pn+1(x, y) +Pn+2...
In this paper we study the center problem for polynomial differential systems and we prove that any ...
<正> We consider the class of polynomial differential equations x = -y+Pn(x,y), y = x + Qn(x, y...
AbstractWe consider the class of polynomial differential equations x˙ Pn(x,y)+Pn+1(x,y)+Pn+2(x,y), y...
In this paper we investigate the center problem for the discontinuous piecewise smooth quasi-homogen...
A polynomial differential system of degree 2 has no global centers (that is, centers defined in all ...
A polynomial differential system of degree 2 has no global centers (that is, centers defined in all ...
In this paper, we characterize the global nilpotent centers of polynomial differential systems of th...
AbstractIn this paper we classify the centers localized at the origin of coordinates, and their isoc...
We characterize the centers of the quasi-homogeneous planar polynomial differential systems of degre...
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