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  • P-ISSN3059-0604
  • E-ISSN3059-1309
  • KCI

ISSN : 3059-0604

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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: Theoretical Mathematics and Pedagogical Mathematics / Journal of the Korean Society of Mathematical Education Series B: Theoretical Mathematics and Pedagogical Mathematics, (P)3059-0604; (E)3059-1309
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. , 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: Theoretical Mathematics and Pedagogical Mathematics

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