Department of Mathematics, Baylor University, Waco, TX 76798-7328, USA.
* E-mail: johnny_henderson@baylor.edu
** E-mail: curtis_kunkel@baylor.edu
AMS subject classification: 39A10, 34B16.
We study singular discrete nth order boundary value problems with mixed boundary conditions. We prove the existence of a positive solution by means of the lower and upper solutions method and the Brouwer fixed point theorem in conjunction with perturbation methods to approximate regular problems.
Singular discrete boundary value problem, mixed conditions, lower and upper solutions, Brouwer fixed point theorem, approximate regular problems
