... Theory and ApplicationsVolume 2011, Article ID 979261, 11 pagesdoi:10.1155/2011/979261Research ArticleThe Iterative Method of Generalized u0-Concave OperatorsYanqiu Zhou, Jingxian Sun, and ... increasing for u.Suppose that1 there exist real numbers 0 ≤ m ≤ M ≤ 1, such that m ≤ kt, s ≤ M, for all t, s ∈I × I,andfs, u ≥ a/M, for alls, u ∈ I × a, ∞,2 for any λ ∈ 0, 1 and ... Theory and ApplicationsIn 7, Krasnosel’ski˘ı gave the concept of u0-concave operators and studied theexistence and uniqueness of the fixed point for the operator by the iterative method. ...