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一致凸Banach空间中非扩张映象的Ishikawa迭代收敛定理
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作者 苏永福 《信阳师范学院学报(自然科学版)》 CAS 2002年第1期31-33,共3页
证明了一致凸 Banach空间中非扩张映象的 Shikawa迭代的一类收敛定理 .
关键词 Ishikawara迭代 收敛定理 一致BANACH 扩张映象 不动点 非空闭凸子集
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On Characterization of Iterative Approximation for Asymptotically Pseudocontractive Mappings
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作者 曾六川 《Journal of Mathematical Research and Exposition》 CSCD 北大核心 2005年第2期279-286,共8页
Let C be a nonempty bounded closed convex subset of a Banach space X, and T : C → C be uniformly L-Lipschitzian with L ≥ 1 and asymptotically pseudocontractive with a sequence {kn}(?)[1, ∞), limn→∞ kn = 1. Fix u ... Let C be a nonempty bounded closed convex subset of a Banach space X, and T : C → C be uniformly L-Lipschitzian with L ≥ 1 and asymptotically pseudocontractive with a sequence {kn}(?)[1, ∞), limn→∞ kn = 1. Fix u ∈ C. For each n ≥ 1, xn is a unique fixed point of the contraction Sn(x) = (1 - (tn)/(Lkn))u + (tn)/(Lkn)Tnx(?)x ∈ C, where {tn}(?)[0,1). Under suitable conditions, the strong convergence of the sequence{xn}to a fixed point of T is characterized. 展开更多
关键词 fixed point asymptotically pseudocontractive mapping uniform Lipschitzian mapping uniform normal structure Banach contraction principle.
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