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    • ZHANG Xiang.[J].数学年刊A辑,1999,20(2):169~172
    EXISTENCE OF LIMIT CYCLES IN A MULTIPLY-CONNECTED REGION
    Received:January 29, 1998  Revised:September 23, 1998
    DOI：
    中文关键词:  
    英文关键词:Multiply-connected region, Annulus theorem, Limit cycle
    基金项目:
    Author NameAffiliationE-mail
    ZHANG Xiang Department of Mathematics, Nanjing Normal University, Nanjing 210097, China xzhang@pine.njnu.edu.cn 
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    中文摘要:
          
    英文摘要:
          In this paper, a conjecture about the existence of limit cycles in a multiply-connected region proposed by Ye Yanqian is proved.
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