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Original Articles

Nonlinear spectra: The Neumann problem

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Pages 33-42 | Received 01 Oct 2008, Published online: 14 Oct 2010
 

Abstract

Eigenvalue problems of the form x” = −λf(x+ ) + μg(x ), x‘(a) = 0, x' (b) = 0 are considered. We are looking for (λ,μ) such that the problem (i), (ii) has a nontrivial solution. This problem generalizes the famous Fučík problem for piece‐wise linear equations. In our considerations functions f and g may be nonlinear. Consequently spectra may differ essentially from those for the Fučík equation.

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