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  • Multiplicity of solutions for resonant Neumann problems with an indefinite and unbounded potential
    Papageorgiou, Nikolaos, 1958- ; Rǎdulescu, Vicenţiu, 1958-
    We examine semilinear Neumann problems driven by the Laplacian plus an unbounded and indefinite potential. The reaction is a Carathéodory function which exhibits linear growth near ▫$\pm \infty$▫. We ... allow for resonance to occur with respect to a nonprincipal nonnegative eigenvalue, and we prove several multiplicity results. Our approach uses critical point theory, Morse theory and the reduction method (the Lyapunov-Schmidt method).
    Source: Transactions of the American Mathematical Society. - ISSN 0002-9947 (Vol. 367, no. 12, 2015, str. 8723-8756)
    Type of material - article, component part ; adult, serious
    Publish date - 2015
    Language - english
    COBISS.SI-ID - 17474137