RT Journal Article T1 Existence results for singular φ-Laplacian problems in presence of lower and upper solutions A1 Cabada Fernández, Alberto A1 Dimitrov, Nikolay K1 Singular φ-Laplacian K1 Nonlinear functional conditions K1 Lower and upper solutions AB This paper is devoted to the study of the existence of solutions to singular φ-Laplacian problems, coupled with nonlinear functional boundary value conditions, in presence of a pair of well-ordered lower and upper solutions. The main result ensures the existence of solutions for a functional problem. It improves previous ones due to Bereanu and Mawhin related to non-homogeneous Dirichlet equations. Some of the used arguments follow the line of some previous papers devoted to regular φ-Laplacian operators PB World Scientific SN 0219-5305 YR 2015 FD 2015 LK https://hdl.handle.net/10347/45723 UL https://hdl.handle.net/10347/45723 LA eng NO Existence results for singular φ-Laplacian problems in presence of lower and upper solutions Alberto Cabada (Spain) and Nikolay D. Dimitrov (Bulgaria) Analysis and Applications 2015 13:02, 135-148 DS Minerva RD 28 abr 2026