Abstract :
We prove the existence of a large positive solution for the boundary value problems
View the MathML source{−Δpu=λ(−h(u)+g(x,u))in Ω,u=0on ∂Ω,
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where View the MathML sourceΔpu=div(|∇u|p−2∇u),p>1,Ω is a bounded domain in RN,λRN,λ is a positive parameter, g(x,.)g(x,.) is (p−1)(p−1)-subhomogeneous at ∞∞, and hh is allowed to become ∞∞ at u=0u=0. Results for related systems are also discussed.