Existence of multiple nontrivial solutio
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A.R. El Amrouss; F. Moradi; M. Moussaoui
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Article
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2009
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Elsevier Science
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English
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The aim of this paper is to prove the existence of multiple nontrivial solutions to a semilinear elliptic problem at resonance. The proofs used here are based on combining the Morse theory and the minimax methods.