Electronic Journal of Differential Equations, Vol. 2007(2007), No. 156, pp. 1-8. Title: Positive solutions for singular three-point boundary-value problems Author: Zengqin Zhao (Qufu Normal Univ., Shandong, China) Abstract: In this paper, we present the Green's functions for a second-order linear differential equation with three-point boundary conditions. We give exact expressions of the solutions for the linear three-point boundary problems by the Green's functions. As applications, we study uniqueness and iteration of the solutions for a nonlinear singular second-order three-point boundary value problem. Submitted February 5, 2007. Published November 21, 2007. Math Subject Classifications: 34A05, 34B27, 34B05, 34B15. Key Words: Green's function; second-order three-point boundary value problem; explicit solution; iteration.