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Non-trivial solutions of local and non-local Neumann boundary-value problems (1404.1390v5)
Published 4 Apr 2014 in math.CA
Abstract: We prove new results on the existence, non-existence, localization and multiplicity of nontrivial solutions for perturbed Hammerstein integral equations. Our approach is topological and relies on the classical fixed point index. Some of the criteria involve a comparison with the spectral radius of some related linear operators. We apply our results to some boundary value problems with local and nonlocal boundary conditions of Neumann type. We illustrate in some examples the methodologies used.
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