Acta mathematica scientia,Series A ›› 2003, Vol. 23 ›› Issue (2): 129-134.

• Articles •     Next Articles

On the Existence of Solutions for PBVP of First Order Differential Equations

 CHEN Ji   

  • Online:2003-04-25 Published:2003-04-25

Abstract:

Using the topological degree theory, the author  proves several existence theorems of solutions between lower and upper solutions for periodic boundary value problems of first order differential equations, where the lower and upper solutions  \$α(t)\$ and  \$β(t)\$ need not satisfy relations \$α(0)≤α(2π),β(0)≥β(2π).\$

Key words: Periodic boundary value problems, Lower and upper solutions, Topological degree.

CLC Number: 

  • 34A34
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