A nonlinear boundary problem involving the -bi-Laplacian operator.
El Khalil, Abdelouahed, Kellati, Siham, Touzani, Abdelfattah (2005)
International Journal of Mathematics and Mathematical Sciences
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El Khalil, Abdelouahed, Kellati, Siham, Touzani, Abdelfattah (2005)
International Journal of Mathematics and Mathematical Sciences
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Alves, Claudianor O., Carrião, Paulo C., Medeiros, Everaldo S. (2004)
Abstract and Applied Analysis
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Mezei, Ildikó-Ilona (2009)
Acta Universitatis Sapientiae. Mathematica
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Yang Jianfu (1998)
Commentationes Mathematicae Universitatis Carolinae
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We obtain in this paper a multiplicity result for strongly indefinite semilinear elliptic systems in bounded domains as well as in .
Francesca Alessio, Paolo Caldiroli, Piero Montecchiari (1998)
Atti della Accademia Nazionale dei Lincei. Classe di Scienze Fisiche, Matematiche e Naturali. Rendiconti Lincei. Matematica e Applicazioni
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We show, by variational methods, that there exists a set open and dense in such that if then the problem , with subcritical (or more general nonlinearities), admits infinitely many solutions.