journal6 ›› 2010, Vol. 31 ›› Issue (6): 9-13.

• Mathematics • Previous Articles     Next Articles

Positive Solutions of Third-Order Periodic Boundary Value Problems with Variable Coefficient

  

  1. (Department of Applied Mathematics,Nanjing University of Finance and Economics,Nanjing 210003,China)
  • Online:2010-11-25 Published:2012-04-11
  • About author:YAO Qing-liu(1946-),male,was born in Shanghai City,professor,research area is applied differential euqation.
  • Supported by:

    National Natural Science Foundation of China(11071109)

Abstract: The positive solutions of a nonlinear third-order periodic boundary value problem with variable coefficient are studied.The nonlinear term may be singular with respect to the space variable.By making use of a suitable transformation,the problem is transformed into a Hammerstein integral equation.By applying Guo-Krasnosel'skii fixed point theorem on cone,the existence of one and two po sitive solutions is proved.

Key words: periodic boundary value problem, positive solution, fixed point theorem on cone

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