Period Function for a Class of Hamiltonian Systems

Period Function for a Class of Hamiltonian Systems
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DOI:
10.1006/jdeq.2000.3912
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发表时间:
2000-11
影响因子:
2.4
通讯作者:
A. Cima;A. Gasull;F. Mañosas
A. Cima;A. Gasull;F. Mañosas
中科院分区:
数学2区
文献类型:
--
作者:
A. Cima;A. Gasull;F. Mañosas

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本文研究一类Hamilton系统x =− Hy,y = Hx的周期函数,其中H(x,y)具有特殊形式H(x,y)= F(x)+ G(y),原点是非退化中心.更具体地说,如果T(h)表示包含在H(x,y)= h中的周期轨道的周期,我们解决了用给定函数T(h)表征所有系统的逆问题。我们还描述了极限行为的T在无穷大时,原点是一个全球性的中心,并应用这一结果来证明,除其他结果外,有没有非线性多项式等值线中心在这个家庭。
Abstract This paper studies the period function of the class of Hamiltonian systems x =− H y , y = H x where H ( x , y ) has the special form H ( x , y )= F ( x )+ G ( y ) and the origin is a non-degenerate center. More concretely, if T ( h ) denotes the period of the periodic orbit contained in H ( x , y )= h we solve the inverse problem of characterizing all systems with a given function T ( h ). We also characterize the limiting behaviour of T at infinity when the origin is a global center and apply this result to prove, among other results, that there are no nonlinear polynomial isochronous centers in this family.