... Inequalities in Pure and Applied Mathematics, vol 6, no 1, Article 10, pp 1–11, 2005 11 P J Y Wong and R P Agarwal, “On the existence of solutions of singular boundary value problems for higher order difference ... nonincreasing, and h may be singular at y Next, we consider the existence and uniqueness of solutions for the following singular higher- order discrete boundary value problem Δn y i λq i n−1 g y i n−1 h y ... Agarwal and F.-H Wong, Existence of positive solutions for higher order difference equations,” Applied Mathematics Letters, vol 10, no 5, pp 67–74, 1997 14 X Lin, D Jiang, and X Li, Existence and uniqueness...