摘要
利用新的分析技巧,建立了任意实Banach空间中具随机误差的Ishikawa迭代法生成的序列{xn}强收敛于渐近半压缩映射的不动点的一些充要条件.作为应用,证明了Oslike和Aniagbosor最近的q-一致光滑实Banach空间中渐近半压缩映射的不动点的迭代逼近的一主要结果(它本身主要是1998年Osilike的一定理的一般化)能被延拓至任意实Banach空间上,并给出了Ishikawa迭代序列的误差估计,且所用证明方法比已有的简单.
By using a new analysis technique, some sufficient and necessary conditions on strong convergence of sequence{xn }generated from the Ishikawa iteration method with random errors to fixed points of asymptotically demicontractive mappings are established in arbitrary real Banach spaces. As application, it is proved that a recent main result of Oslike and Aniagbosor (Which is itself a generalization of a theorem of Osilike(1998) ) concerning the iterarive approximation of fixed points of asymptotically demicontractive mappings in q-unifomly smooth real Banach space( 1〈q〈+∞)can be extended to arbitrary real Banach spaces. Error estimate of Ishikawa iterative sequence is given. Furthermore, the methods of proofs are quite different and simple.
出处
《浙江大学学报(理学版)》
CAS
CSCD
北大核心
2006年第1期7-13,共7页
Journal of Zhejiang University(Science Edition)
基金
国家自然科学基金资助项目(10271025)
浙江省自然科学基金资助项目(102002)