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  Volume 10, Issue 1, Article 9
 
Positive solutions for Second-Order Boundary Value Problem with Integral Boundary Conditions at Resonance on a Half-Line

    Authors: Aijun Yang, Weigao Ge,  
    Keywords: Boundary value problem; Resonance; Cone; Positive solution; Coincidence.  
    Date Received: 03/02/09  
    Date Accepted: 25/02/09  
    Subject Codes:

34B10; 34B15; 34B45

 
    Editors: Ravi P. Agarwal,  
 
    Abstract:

This paper deals with the second order boundary value problem with integral boundary conditions on a half-line:

$displaystyle (p(t)x^{prime}(t))^{prime}+ g(t)f(t,x(t))=0,   $a.e. in $displaystyle (0,infty),$
$displaystyle x(0)=int_{0}^{infty}x(s)g(s)ds,qquad lim limits_{tightarrowinfty}p(t)x^{prime}(t)=p(0)x^{prime}(0).$
A new result on the existence of positive solutions is obtained. The interesting points are: firstly, the boundary value problem involved in the integral boundary condition on unbounded domains; secondly, we employ a new tool - the recent Leggett-Williams norm-type theorem for coincidences and obtain positive solutions. Also, an example is constructed to illustrate that our result here is valid.

         
       
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