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  • Pairs of nontrivial solutions for resonant Neumann problems
    Gasiński, Leszek ; Papageorgiou, Nikolaos, 1958-
    We study a semilinear Neumann problem which is resonant at ▫$\pm\infty$▫ with respect to any eigenvalue different from the first and the second eigenvalue of ▫$-\Delta _N$▫ (the negative Neumann ... Laplacian). Using a combination of variational methods with Morse theoretic techniques, we show that the problem has at least two nontrivial smooth solutions.
    Vir: Journal of mathematical analysis and applications. - ISSN 0022-247X (Vol. 398, iss. 2, 2013, str. 649-663)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2013
    Jezik - angleški
    COBISS.SI-ID - 17809241