Nonhomogeneous multiparameter problems in Orlicz-Sobolev spaces

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This paper is concerned with the existence and multiplicity of solutions for a class of problems involving the f-Laplacian operator with general assumptions on the nonlinearities, which include both semipositone cases and critical concave convex problems. The research is based on the subsupersolution technique combined with a truncation argument and an application of the Mountain Pass Theorem. The results in this paper improve and complement some recent contributions to this field.

Klíčová slova
phi-Laplacian
concentration-compactness principle
Mountain Pass Theorem
semipositone problem
subsupersolution
variational method