RT Journal Article T1 Existence results for a clamped beam equation with integral boundary conditions A1 Cabada Fernández, Alberto A1 Jebari, Rochdi K1 Green's functions K1 Fourth-order boundary value problem K1 Integral boundary conditions, positive solutions K1 Extension of Krasnoselskii's fixed point theorem in a cone AB In this paper we investigate the existence of positive solutions of fourth order non autonomous differential equations with integral boundary conditions, the nonlinearity is a continuous function that depends on the spatial variable and its the second-order derivative. The approach relies an extension of Krasnoselskii’s fixed point theorem in a cone. Some examples are given to illustrate our results. PB Bolyai Institute, University of Szeged and the Hungarian Academy of Sciences SN 1417-3875 YR 2020 FD 2020-12-21 LK https://hdl.handle.net/10347/37812 UL https://hdl.handle.net/10347/37812 LA eng DS Minerva RD 28 abr 2026