文摘
In this paper, we are concerned with a fourth-order three point boundary value problem. We prove the existence, uniqueness and positivity of solutions by using Leray–Schauder nonlinear alternative, Banach contraction theorem and Guo–Krasnosel’skii fixed point theorem. Keywords Guo–Kranosel’skii fixed point theorem Three point boundary value problem Positive solution Leray–Schauder nonlinear alternative Contraction principle