%0 Journal Article %T Existence and multiplicity results for Singular phi-Laplacian BVPs on the positive half-line %A Smail Djebali %A Karima Mebarki %J Electronic Journal of Differential Equations %D 2009 %I Texas State University %X This work proves the existence and multiplicity of positive solutions for a second-order nonlinear three-point phi-Laplacian boundary-value problem posed on the positive half-line. The nonlinearity depends on the solution and its derivative and may exhibit a time singularity at the origin. Existence of single and multiple nontrivial positive solutions is proved using fixed point index theory. %K phi-Laplacian %K three point BVPs %K positive solutions %K singularity %K fixed point in a cone %U http://ejde.math.txstate.edu/Volumes/2009/103/abstr.html