Electronic Journal of Differential Equations
Using the theory of fixed point index, this paper discusses the existence of at least one positive solution and the existence of multiple positive solutions for the singular three-point boundary value problem: y″(t) + a(t)f(t, y(t), y′(t)) = 0, 0 < t < 1, y′(0) = 0, y(1) = αy(η), where 0 < α < 1, 0 < η < 1, and f may be singular at y = 0 and y′ = 0. .
Agarwal, R. P., O'Regan, D., & Yan, B. (2008). Positive solutions for singular three-point boundary-value problems. Electronic Journal of Differential Equations, 2008