Abstract
This paper considers a class of degenerate quasilinear elliptic equations with discontinuous nonlinearities. The existence of positive weak solutions and S-solutions is discussed using variational methods. The results assert that the \((\lambda ,a)\)-space of the parameters involved is divided into three regions - no solution, at least one S-solution, and at least two weak solutions (one is S-solution among them), in each region respectively. The regions are separated by a continuous, nondecreasing curve and line segment. Further, there exists an S-solution at each point on the separating curve.
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Acknowledgements
The authors thank the referee for careful reading and for many useful comments. The first author would like to thank Ailton Rodrigues da Silva (DMAT/UFRN) for several discussions about this subject.
Funding
This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES) – Finance Code 001. J. Abrantes Santos was partially supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico - Brasil (CNPq) – 303479/2019-1.
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Santos, J.A., Pontes, P.F.S. & Soares, S.H.M. A global result for a degenerate quasilinear eigenvalue problem with discontinuous nonlinearities. Calc. Var. 62, 91 (2023). https://doi.org/10.1007/s00526-023-02437-2
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DOI: https://doi.org/10.1007/s00526-023-02437-2