FULL DESCRIPTION OF THE SPECTRUM OF A STEKLOV-LIKE EIGENVALUE PROBLEM INVOLVING THE (P,Q)-LAPLACIAN


L. Barbu, G. Moroșanu

 Abstract:  In this paper we consider in a bounded domain Ω ⊂ R N a Steklovlike eigenvalue problem involving the (p, q)-Laplacian plus some potentials. Under suitable assumptions, using the Nehari manifold method and a variational approach, we are able to determine the full eigenvalue set of this problem as being an open interval (λ∗, +∞) with λ∗ > 0.
MSC: 35J60, 35J92, 35P30

keywords: Eigenvalues, (p, q)-Laplacian, Sobolev spaces, Nehari manifold, variational method.

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DOI   10.56082/annalsarscimath.2023.1-2.30

lbarbu@univ-ovidius.ro Ovidius University, Faculty of Mathematics and Informatics, 124 Mamaia Blvd., 900527 Constant¸a, Romania;
morosanu@math.ubbcluj.ro Babe¸s-Bolyai University, Faculty of Mathematics and Computer Science, 1 Mihail Kogˇalniceanu Str., 400084 Cluj-Napoca, Romania and Academy of Romanian Scientists, 3 Ilfov Str., Sector 5, Bucharest


PUBLISHED in Annals Academy of Romanian Scientists Series on Mathematics and Its ApplicationVolume 15 no 1-2, 2023