RT Journal Article T1 Positive solutions for second-order boundary-value problems with sign changing Green's functions A1 Cabada Fernández, Alberto A1 Enguiça, Ricardo A1 López Somoza, Lucía K1 Second order differential equations K1 Dirichlet boundary conditions K1 Periodic boundary conditions K1 Sign changing Green's function AB In this article we analyze some possibilities of finding positive solutions for second-order boundary-value problems with the Dirichlet and periodic boundary conditions, for which the corresponding Green's functions change sign. The obtained results can also be adapted to Neumann and mixed boundary conditions PB Texas State University SN 1072-6691 YR 2017 FD 2017 LK http://hdl.handle.net/10347/17662 UL http://hdl.handle.net/10347/17662 LA eng NO Cabada, A., & Saavedra, L. (2017). Positive solutions for second-order boundary-value problems with sign changing Green's functions. Electronic Journal of Differential Equations, No. 245, pp. 1-17 NO A. Cabada and L. López-Somoza were partially supported byMinisterio de Economía y Competitividad, Spain, and FEDER, project MTM2013-43014-P, and by the Agencia Estatal de Investigación (AEI) of Spain under grantMTM2016-75140-P, co-financed by the European Community fund FEDER.L. López-Somoza was spartially supported by FPU scholarship, Ministerio deEducación, Cultura y Deporte, SpainR. Enguiça was partially supported by Fundaçao para a Ciência e a Tecnologia,Portugal, UID/MAT/04561/2013 DS Minerva RD 27 abr 2026