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We consider the nonlinear fourth order beam equation
with boundary conditions corresponding to the periodic or the hinged beam problem. In presence of upper and lower solutions, we consider a monotone method to obtain solutions. The main idea is to write the equation in the form
where , are adequate constants, and use maximum principles and a suitable decomposition of the operator appearing in the left-hand side.
Cite this article
P. Habets, Margarita Ramalho, A monotone method for fourth order boundary value problems involving a factorizable linear operator. Port. Math. 64 (2007), no. 3, pp. 255–279