𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Coexistence of limit cycles and invariant algebraic curves for a Kukles system

✍ Scribed by J. Chavarriga; E. Sáez; I. Szántó; M. Grau

Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
269 KB
Volume
59
Category
Article
ISSN
0362-546X

No coin nor oath required. For personal study only.

📜 SIMILAR VOLUMES

General center conditions and bifurcatio
General center conditions and bifurcation of limit cycles for a quasi-symmetric seventh degree system
✍ Chaoxiong Du; Yirong Liu 📂 Article 📅 2008 🏛 Elsevier Science 🌐 English ⚖ 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,

The problem of general center-focus and
The problem of general center-focus and bifurcation of limit cycles for a planar system of nine degrees
✍ Chaoxiong Du; Yirong Liu 📂 Article 📅 2009 🏛 Elsevier Science 🌐 English ⚖ 1023 KB

Our researches are concerned with a class of planar general equivariant system of nine degrees. By making two appropriate transformations of system and calculating focal values carefully, we obtain the conditions that the infinity and three elementary focuses 2 ) become four general centers at the