Abstract
Existence results of infinitely many solutions for a fourth-order nonlinear boundary value problem are established. No symmetric condition on the nonlinear term is assumed. The main tool is an infinitely many critical points theorem.
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Bonanno, G., Di Bella, B. Infinitely many solutions for a fourth-order elastic beam equation. Nonlinear Differ. Equ. Appl. 18, 357–368 (2011). https://doi.org/10.1007/s00030-011-0099-0
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DOI: https://doi.org/10.1007/s00030-011-0099-0