RT Journal Article T1 Compression–Expansion Fixed Point Theorems for Decomposable Maps and Applications to Discontinuous ϕ-Laplacian problems A1 Rodríguez López, Jorge K1 Compression–expansion fixed point theorem K1 Discontinuous differential equation K1 Positive solution K1 ϕ-Laplacian equation K1 Differential inclusion AB In this paper, we prove new compression–expansion type fixed point theorems in cones for the so-called decomposable maps, that is, compositions of two upper semicontinuous multivalued maps. As an application, we obtain existence and localization of positive solutions for a differential equation with ϕ-Laplacian and discontinuous nonlinearity subject to multi-point boundary conditions. As far as we are aware, the existence results are new even in the classical case of continuous nonlinearities PB Springer SN 1575-5460 YR 2021 FD 2021 LK http://hdl.handle.net/10347/26636 UL http://hdl.handle.net/10347/26636 LA eng NO Rodríguez–López, J. Compression–Expansion Fixed Point Theorems for Decomposable Maps and Applications to Discontinuous ϕ-Laplacian problems. Qual. Theory Dyn. Syst. 20, 66 (2021). https://doi.org/10.1007/s12346-021-00505-6 NO Jorge Rodríguez-López was partially supported by Xunta de Galicia ED431C 2019/02 DS Minerva RD 24 abr 2026