Limit cycles for discontinuous planar piecewise linear differential systems separated by one straight line and having a center

被引:45
|
作者
Llibre, Jaume [1 ]
Zhang, Xiang [2 ]
机构
[1] Univ Autonoma Barcelona, Dept Matemat, E-08193 Barcelona, Catalonia, Spain
[2] Shanghai Jiao Tong Univ, Minist Educ, Key Lab Sci & Engn Comp, Sch Math Sci, Shanghai 200240, Peoples R China
关键词
Non-smooth differential system; Limit cycle; Discontinuous piecewise linear differential system; BIFURCATIONS; NUMBER;
D O I
10.1016/j.jmaa.2018.07.024
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
From the beginning of this century more than thirty papers have been published studying the limit cycles of the discontinuous piecewise linear differential systems with two pieces separated by a straight line, but it remains open the following question: what is the maximum number of limit cycles that this class of differential systems can have? Here we prove that when one of the linear differential systems has a center, real or virtual, then the discontinuous piecewise linear differential system has at most two limit cycles. (C) 2018 Elsevier Inc. All rights reserved.
引用
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页码:537 / 549
页数:13
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