Abstract
The singular semilinear elliptic problem −Δu + k(x)u−γ = λup in Ω, u > 0 in Ω, u = 0 on ∂Ω, is considered, where Ω is a bounded domain with smooth boundary in RN, , and γ, p, λ are three positive constants. Some existence or nonexistence results are obtained for solutions of this problem by the sub‐supersolution method.
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