... 2008, Article ID 586020, 16 pagesdoi:10.1155/2008/586020Research Article Existence and Multiple Solutions for Nonlinear Second-Order Discrete Problems with Minimum and MaximumRuyun Ma and Chenghua ... 2008Recommended by Svatoslav Stan ˇekConsider the multiplicity of solutions to the nonlinear second-order discrete problems with minimum and maximum: Δ2uk−1fk,uk, Δuk, k ∈ T,min{uk : k ... 2.34 2 Advances in Difference EquationsIn this paper, we discuss the nonlinear second-order discrete problems with minimum and maximum:Δ2uk − 1fk, uk, Δuk,k∈ T,1.5minuk...