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CHEN Xinyi   

  1. China Minorities Information Technology Institute, Northwest University for Nationalities, Lanzhou 730030, Gansu, China
  • Received:2008-11-07 Revised:1900-01-01 Online:2009-02-24 Published:2009-05-31
  • Contact: CHEN Xinyi

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Abstract:

By employing the coincidence degree theory, a kind of second order functional differential equations with delay such as x″(t)+h(x′(t))+f(x(t))x′(t)+g(x(t-τ(t)))=p(t)is studied.　 Some new results on the existence of periodic solutions are obtained, which generalizes the known results.

Key words: functional differential equation, periodic solution, coincidence degree

CLC Number: 

  • O1756
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