Strong Convergence Theorem for Two Commutative Asymptotically Nonexpansive Mappings in Hilbert Space
نویسندگان
چکیده
where tn → 1 n → ∞ . We may assume that tn ≥ 1 for all n 1, 2, 3, . . . . Denote by F T the set of fixed points of T . Throughout this paper T and S : C → C are two commutative asymptotically nonexpansive mappings with asymptotical coefficients {tn} and {sn}, respectively. Suppose that F : F T ∩F S / ∅ 1, Goebel and Kirk’s theorem makes it possible . It is well known that F T and F S are convex and closed 1, 2 , so is F. PK denotes the metric projection from H onto a closed convex subset K of H and ωw xn denotes the weak w-limit set of {xn}. It is well known that a Hilbert space H satisfies Opial’s condition 3 , that is, if a sequence {xn} converges weakly to an element y ∈ H and y / z, then
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عنوان ژورنال:
- Int. J. Math. Mathematical Sciences
دوره 2008 شماره
صفحات -
تاریخ انتشار 2008