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Nonhomogeneous Hemivariational Inequalities with Indefinite Potential and Robin Boundary Condition
Nikolaos S. Papageorgiou, Vicenţiu D. Rădulescu, Dušan D. Repovš
We consider a nonlinear, nonhomogeneous Robin problem with an indefinite potential and a nonsmooth primitive in the reaction term. In fact, the right-hand side of the problem (reac…
Robin problems with indefinite linear part and competition phenomena
N. S. Papageorgiou, V. D. Rădulescu, D. D. Repovš
We consider a parametric semilinear Robin problem driven by the Laplacian plus an indefinite potential. The reaction term involves competing nonlinearities. More precisely, it is t…
On a -Laplacian problem with parametric concave term and asymmetric perturbation
Salvatore Marano, Sunra Mosconi, Nikolaos Papageorgiou
A Dirichlet problem driven by the -Laplace operator and an asymmetric concave reaction with positive parameter is investigated. Four nontrivial smooth solutions (two positiv…
Positive solutions for perturbations of the Robin eigenvalue problem plus an indefinite potential
N. S. Papageorgiou, V. D. Rădulescu, D. D. Repovš
We study perturbations of the eigenvalue problem for the negative Laplacian plus an indefinite and unbounded potential and Robin boundary condition. First we consider the case of a…