Cabada Fernández, AlbertoEnguiça, RicardoLópez Somoza, Lucía2018-11-022018-11-022017Cabada, 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. 1-171072-6691http://hdl.handle.net/10347/17662In 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 conditionseng© 2017 Texas State University. This work is licensed under a Creative Commons Attribution 4.0 International LicenseAtribución 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/Second order differential equationsDirichlet boundary conditionsPeriodic boundary conditionsSign changing Green's functionjournal articleopen access