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CAT(κ)空间中非扩张映射的Ishikawa迭代算法 被引量:1

On Ishikawa Algorithm for Non-expansive Mappings in CAT(κ) Spaces
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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)
关键词 CAT(κ)空间 非扩张映射 ISHIKAWA迭代序列 Δ-收敛 CAT(κ) space non-expansive mapping Ishikawa iteration sequence Δ-convergence
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参考文献4

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同被引文献8

  • 1BRIDSON M, HAEFLIGER A. Metric Spaces of Non-Positive Curvature [M]. Berlin: Springer-Verlag, 1999.
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