Amster, PabloCárdenas, Pedro P.2011-10-132011-10-132011-10-13https://hdl.handle.net/10893/1809We study the semilinear second order ODE u00 + g(t, u) = 0 under the following Sturm- Liouville boundary condition au(0) + bu0(0) = u0 and cu(T) + du0(T) = uT . We obtain solutions by topological methods. Moreover, we show that a solution may be constructed recursively, under appropriate conditions.enSturm-Liouville boundary conditionsTopological methodsArtículo de revistainfo:eu-repo/semantics/openAccess