We study the existence of countably many positive solutions of boundary value problems on the half-line for differential equations of second-order. The fixed-point index theory and a new fixed-pointâ€¦ (More)

In this paper, by using concentration-compactness principle and a new version of the symmetric mountain-pass lemma due to Kajikiya (J Funct Anal 225:352â€“370, 2005), infinitely many small solutionsâ€¦ (More)

By using fixed-point theorem for operators on a cone, sufficient conditions for the existence of multiple positive solutions for a third-order boundary-value problem on the half-line are established.â€¦ (More)