Existence of nonnegative solutions for singular elliptic problems

We prove the existence of nonnegative nontrivial weak solutions to the problem −∆u = au−αχ{u>0} − bup in Ω, u = 0 on ∂Ω, where Ω is a bounded domain in Rn. A sufficient condition for the existence of a continuous and strictly positive weak solution is also given, and the uniqueness of such a solution is proved. We also prove a maximality property for solutions that are positive a.e. in Ω.

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Bibliographic Details
Main Authors: Godoy, Tomás Fernando, Guerín, Alfredo José
Other Authors: https://orcid.org/0000-0002-8804-9137
Format: info:eu-repo/semantics/publishedVersion biblioteca
Language:eng
Published: 2016
Subjects:Singular elliptic problem, Variational problems, Nonnegative solution, Positive solution, Sub-supersolution,
Online Access:https://ejde.math.txstate.edu/Volumes/2016/191/godoy.pdf
http://hdl.handle.net/11086/548455
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