Approximation of fixed points of nonexpansive mappings

Approximation of fixed points of nonexpansive mappings
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DOI:
10.1007/bf01190119
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发表时间:
1992-05
影响因子:
0.6
通讯作者:
R. Wittmann
R. Wittmann
中科院分区:
数学4区
文献类型:
--
作者:
R. Wittmann

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1~ Tix 通常只有较差的收敛性,在固有的非线性情况下,平均值~ i= o 关系,即弱收敛性。除了上述这些平均值之外,还有其他几个平均值,如果 T 是线性的,则它们与通常的塞萨罗平均值相同。在这篇文章中,我们研究了一种迭代方案,该方案首先由 Halpern [2] 考虑。给出 [0, i] 中的序列 ~=(~ n) 并且 A~ x 归纳定义为
1~ Tix have usually only poor convergence propernonlinear case the averages~ i= o ties, namely weak convergence. In addition to these aforementioned averages, there are several others, which are identical to the usual Cesaro averages, if T is linear. In this note we study an iteration scheme, first considered by Halpern [2]. There a sequence~=(~ n) in [0, i] is given and A~ x is defined inductively by