Dallos Santos, Dionicio Pastor2021-10-012021-10-012020-06-30Dallos Santos, D. P. (2020). Multiple solutions for mixed boundary value problems with phi-Laplacian operators. <i>Electronic Journal of Differential Equations, 2020</i>(67), pp. 1-8.1072-6691https://hdl.handle.net/10877/14574Using Leray-Schauder degree theory and the method of upper and lower solutions we establish existence and multiplicity of solutions for problems of the form (ϕ(u′))′ = ƒ(t, u, u′) u(0) = u(T) = u′(0), where ϕ is an increasing homeomorphism such that ϕ(0) = 0, and ƒ is a continuous function.Text8 pages1 file (.pdf)enAttribution 4.0 InternationalNonlinear Schrödinger equationInviscid limitLinear dampingForcing termArticle