Positive Solutions of Singular Multi-Point Discrete Boundary Value Problem.

In this paper, we are concerned with the existence and multiplicity of positive solutions for a second-order singular multi-point discrete boundary value problem. By using the Krasnoselskii's fixed point theorem, sufficient conditions for the existence of positive solutions are established. Under new conditions when f is singular new results are obtained. Our results give an almost complete structure of the existence of positive solutions for the problems with an appropriately chosen parameter. [ABSTRACT FROM AUTHOR]