• 제목/요약/키워드: non-symmetric pseudo-metrics and lower approximation operators

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ALEXANDROV TOPOLOGIES AND NON-SYMMETRIC PSEUDO-METRICS

  • Oh, Ju-mok;Kim, Yong Chan
    • 한국수학교육학회지시리즈B:순수및응용수학
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    • 제27권3호
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    • pp.125-135
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    • 2020

  • 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.

  • https://doi.org/10.7468/jksmeb.2020.27.3.125 인용 PDF KSCI