| Presentation Name： | Limit cycle bifurcations near a 2-polycycle or double 2-polycycle of planar systems |
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| Presenter🚪： | 韩茂安 教授 |
| Date： | 2013-10-29 |
| Location： | 光华西辅楼404 |
| Abstract🧖♂️😅： | In this paper, we study the bifurcation problem of limit cycles for a near-Hamiltonian system near a 2-polycycle or double 2-polycycle. We obtain new results on the number of limit cycles by using the method of stability-changing of a homoclinic loop. This method also provides a new way to nd alien limit cycles. Especially, we found some alien limit cycles of new type. |
| Annual Speech Directory： | No.158 |
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