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《微分方程年刊(英文版)》 2012-01
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EXISTENCE OF POSITIVE PERIODIC SOLUTIONS TO A SECOND-ORDER DIFFERENTIAL INCLUSION

Yuqiang Feng,Shougui Li (School of Science,Wuhan University of Science and Technology,Wuhan 430065;Hubei Province Key Laboratory of Systems Science in Metallurgical Process,Wuhan 430065)  
In this paper,the existence of positive periodic solutions to a second-order differential inclusion is considered.Some existence results are established by the fixed-point theorem for multivalued operators and Sobolev constant.
【Fund】: supported by the Natural Science Foundation of Education Committee of Hubei Province (Q20091107);; Hubei Province Key Laboratory of Systems Science in Metallurgical Process (C201015);; WUST (2008RC01)
【CateGory Index】: O175
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