Group of Waves, Program of Mathematics, Faculty of Exact and Natural Sciences, Cartagena University, Cartagena de Indias, Co-lombia. Morelia Institute of Technology, Morelia, Mexico.
We show a result of symmetry for a big class of problems with condition of Neumann on the boundary in the case one dimensional. We use the method of reflection of Alexandrov and we show one application of this method and the maximum principle for elliptic operators in problems with conditions of Neumann. Some results of symmetry for elliptic problems with condition of Neumann on the boundary may be extended to elliptic operators more general than the Laplacian.
A. Ramirez, R. Ortiz and J. Ceballos, "Symmetric Solutions of a Nonlinear Elliptic Problem with Neumann Boundary Condition," Applied Mathematics, Vol. 3 No. 11, 2012, pp. 1686-1688. doi: 10.4236/am.2012.311233.
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