๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

Center conditions and bifurcation of limit cycles at three-order nilpotent critical point in a seventh degree Lyapunov system

โœ Scribed by Feng Li; Yirong Liu; Yusen Wu


Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
236 KB
Volume
16
Category
Article
ISSN
1007-5704

No coin nor oath required. For personal study only.


๐Ÿ“œ SIMILAR VOLUMES


General center conditions and bifurcatio
โœ Chaoxiong Du; Yirong Liu ๐Ÿ“‚ Article ๐Ÿ“… 2008 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 770 KB

In this paper, we study a class of quasi-symmetric seventh degree system. By making two appropriate transformations of system (3) and calculating general focal values carefully, we obtain the conditions that the infinity and the elementary focus (-1 2 , 0) become centers at the same time. Moreover,