摘要
在CAT(κ)空间中研究了非扩张映射的不动点的存在性问题.引进了CAT(κ)空间中的Δ-收敛性,得到了CAT(κ)空间中一个重要的不等式.在此基础上研究了非扩张映射的Ishikawa迭代序列的收敛性问题,得到了在CAT(κ)空间中非扩张映射的Ishikawa迭代序列Δ-收敛到不动点的定理.
The existence of fixed point in CAT(κ) space has been studied in this article.Firstly,the definition of Δ-convergence in CAT(κ) space is applied in the article before an important inequality in CAT(κ) space has been studied.On this basis,the convergence of non-expansive mappings for the Ishikawa iterative sequence has been studied.Finally,in CAT(κ) space,non-expansive mappings for the Ishikawa iterative sequence Δ-convergence to fixed point has been obtained in the article.
出处
《西南师范大学学报(自然科学版)》
CAS
CSCD
北大核心
2012年第10期1-5,共5页
Journal of Southwest China Normal University(Natural Science Edition)
基金
国家自然科学基金资助项目(11071198)
河南省科技发展计划(122300410256)
河南省教育厅自然科学研究项目(2011B110025)