Boundary Value Problems
Volume 2011 (2011), Article ID 893753, 18 pages
Review Article

An Overview of the Lower and Upper Solutions Method with Nonlinear Boundary Value Conditions

Departamento de Análise Matemática, Facultade de Matemáticas, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain

Received 19 April 2010; Accepted 7 July 2010

Academic Editor: Gennaro Infante

Copyright © 2011 Alberto Cabada. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The aim of this paper is to point out recent and classical results related with the existence of solutions of second-order problems coupled with nonlinear boundary value conditions.