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In this paper, we establish the existence of two intervals of positive real parameters $\lambda$ for which a class of Neumann boundary value equations involving the (p1,...,pn)-Laplacian admits three weak solutions, whose norms are uniformly bounded with respect to $\lambda$ belonging to one of the two intervals. The approach is based on variational methods.

Three weak solutions for a class of Neumann boundary value systems involving the (p1,...,pn)-Laplacian