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math.CA2018★ 1 cited
Realization of Arbitrary Configuration of Limit Cycles of Piecewise Linear System
Shaoqing Wang, Jiazhong Yang
In this paper, we consider the realization of configuration of limit cycles of piecewise linear systems on the plane. We show that any configuration of Jordan curves can be realize…
math.CA2017★ 1 cited
On the maximal saddle order of p:-q resonant saddle
Guangfeng Dong, Changjian Liu, Jiazhong Yang
In this paper, we obtain some estimations of the saddle order which is the sole topological invariant of the non-integrable resonant saddles of planar polynomial vector fields of a…