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Existence of infinitely many nodal solutions for a superlinear Neumann boundary value problem
Boundary Value Problems volume 2005, Article number: 201383 (2005)
We study the existence of a class of nonlinear elliptic equation with Neumann boundary condition, and obtain infinitely many nodal solutions. The study of such a problem is based on the variational methods and critical point theory. We prove the conclusion by using the symmetric mountain-pass theorem under the Cerami condition.
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Qian, A. Existence of infinitely many nodal solutions for a superlinear Neumann boundary value problem. Bound Value Probl 2005, 201383 (2005). https://doi.org/10.1155/BVP.2005.329