RT Journal Article T1 Second-order discontinuous problems with nonlinear functional boundary conditions on the half-line A1 López Pouso, Rodrigo A1 Rodríguez López, Jorge K1 Discontinuous differential equations K1 Upper and lower solutions K1 Half line problems K1 Fixed point theorems K1 Extremal solutions AB We establish sufficient conditions for the existence of extremal solutions for a second-order problem on the half-line with discontinuous right-hand side and nonlinear boundary conditions. Our results are new even in the classical case of continuous nonlinearities. We illustrate their applicability with an example. PB University of Szeged SN 1417-3875 YR 2018 FD 2018 LK https://hdl.handle.net/10347/44472 UL https://hdl.handle.net/10347/44472 LA eng NO Rodrigo López Pouso was partially supported by Ministerio de Economía y Competitividad, Spain, and FEDER, Project MTM2016-75140-P, and Xunta de Galicia ED341D R2016/022 and GRC2015/004. Jorge Rodríguez-López was financially supported by Xunta de Galicia Schol- arship ED481A-2017/178. DS Minerva RD 23 abr 2026