Search

The article establishes the existence of three positive solutions for second-order discrete boundary value problems. Some background materials and definitions that will be needed in the discussion are presented, which include the definitions of an operator and a nonnegative continuous concave functional on a cone. This paper depends on an application of a fixed-point theorem which deals with fixed points of a cone-preserving operator defined on an ordered Branach space to obtain results. An example is also given to illustrate the main results.