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In this paper, we establish the results on the existence, nonexistence andmultiplicity of positive solutions to singular boundary value problemsinvolving $\varphi$-Laplacian. Our approach is based on the fixed point indextheory. The interesting point is that a result for the existence of threepositive solutions is given.

Existence, nonexistence and multiplicity of positive solutions for singular boundary value problems involving $\varphi$-Laplacian