Existence and Nonexistence of Positive Solutions for Singular Semilinear Elliptic Boundary Value Problems
نویسنده
چکیده
In this paper we study existence of positive solutions to singular elliptic boundary value problems involving divergence terms in general domains. By constructing suitable upper and lower solutions and making comparison, we obtain suucient conditions for existence and nonexistence of solutions. We also study a concrete example to show that the conditions imposed on parameters appearing in the structure conditions of nonlinear terms are optimal and our results can be used to get boundary regularity of solutions.
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