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Abstract

There have been many attempts to generalize the definition of a metric space in order to obtain possibilities for more general fixed point results. In this paper, we give a survey of recent results on reducing fixed point theorems on generalized metric spaces to fixed point theorems on metric spaces and then investigate this fact in other generalized metric spaces. We show that many generalized metric spaces are topologically equivalent to certain metric spaces or to previously generalized metric spaces. Also, the fixed point theory in these generalized metric spaces may be a consequence of the fixed point theory in certain metric spaces or in previously generalized metric spaces.

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Acknowledgments

The authors sincerely thank referees for their valuable comments on revising the paper. Also, the authors sincerely thank The Dong Thap Seminar on Mathematical Analysis and Applications for discussing partly this article and thank Prof. S. Sedghi, Islamic Azad University, Iran; Prof. D. Wardowski, University of Łodź, Poland; Prof. P. Kumam, King Mongkut’s University of Technology Thonburi, Thailand; Prof. Z. Mustafa, The Hashemite University, Jordan; Prof. E. Karapinar, Atilim University, Turkey for their helps. The third and fourth authors are grateful to Ministry of Education, Science and Technological Development of Serbia.

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Van An, T., Van Dung, N., Kadelburg, Z. et al. Various generalizations of metric spaces and fixed point theorems. RACSAM 109, 175–198 (2015). https://doi.org/10.1007/s13398-014-0173-7

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  • DOI: https://doi.org/10.1007/s13398-014-0173-7

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