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  • P-ISSN1226-0657
  • E-ISSN2287-6081
  • KCI

ISSN : 1226-0657

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Vol.27 No.3

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ALEXANDROV TOPOLOGIES AND NON-SYMMETRIC PSEUDO-METRICS

Journal of the Korean Society of Mathematical Education Series B: The Pure and Applied Mathematics / Journal of the Korean Society of Mathematical Education Series B: The Pure and Applied Mathematics, (P)1226-0657; (E)2287-6081
2020, v.27 no.3, pp.125-135
https://doi.org/https://doi.org/10.7468/jksmeb.2020.27.3.125
Oh, Ju-mok
Kim, Yong Chan
Oh,, J. , & Kim,, Y. C. (2020). ALEXANDROV TOPOLOGIES AND NON-SYMMETRIC PSEUDO-METRICS. Journal of the Korean Society of Mathematical Education Series B: The Pure and Applied Mathematics, 27(3), 125-135, https://doi.org/https://doi.org/10.7468/jksmeb.2020.27.3.125

Abstract

In this paper, we investigate the properties of Alexandrov topologies, non-symmetric pseudo-metrics and lower approximation operators on [0, ∞]. Moreover, we investigate the relations among Alexandrov topologies, non-symmetric pseudo-metrics and lower approximation operators. We give their examples.

keywords
Alexandrov topologies, non-symmetric pseudo-metrics and lower approximation operators

Journal of the Korean Society of Mathematical Education Series B: The Pure and Applied Mathematics

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