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On △-Convergence of Iterative Sequences in CAT(0) Spaces

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Abstract

In this paper, recent results of Khatibzadeh and Ranjbar (Vietnam J. Math. 44, 307–313, 2016) on △-convergence are discussed. In particular, two supplementary strong convergence theorems are derived. Moreover, an example is given to show that their results are not necessarily analogous to that of Maingé (J. Comput. Appl. Math. 219, 223–236, 2008) in the setting of CAT(0) spaces.

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Acknowledgements

The authors thank the referee for comments and suggestions on the manuscript.

Funding

The research of the first author is supported by the Thailand Research Fund and Khon Kaen University under Grant No. RSA5980006. The research of the second author is supported by the Thailand Research Fund under Grant No. MRG6080243.

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Authors and Affiliations

  1. Department of Mathematics, Faculty of Science, Khon Kaen University, Khon Kaen, 40002, Thailand

    Satit Saejung & Pongsakorn Yotkaew

  2. Research Center for Environmental and Hazardous Substance Management, Khon Kaen University, Khon Kaen, 40002, Thailand

    Satit Saejung

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  1. Satit Saejung
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  2. Pongsakorn Yotkaew
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Correspondence to Pongsakorn Yotkaew.

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Saejung, S., Yotkaew, P. On △-Convergence of Iterative Sequences in CAT(0) Spaces. Vietnam J. Math. 48, 35–45 (2020). https://doi.org/10.1007/s10013-019-00338-6

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  • DOI: https://doi.org/10.1007/s10013-019-00338-6

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