ALEXANDROV TOPOLOGIES AND NON-SYMMETRIC PSEUDO-METRICS

한국수학교육학회지시리즈B:순수및응용수학 / 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 (Mathematics Department, Gangneung-Wonju National University)
Kim, Yong Chan (Mathematics Department, Gangneung-Wonju National University)

Oh, Ju-mok, & Kim, Yong Chan. (2020). ALEXANDROV TOPOLOGIES AND NON-SYMMETRIC PSEUDO-METRICS. 한국수학교육학회지시리즈B:순수및응용수학, 27(3), 125-135, https://doi.org/https://doi.org/10.7468/jksmeb.2020.27.3.125

복사

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

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Vol.27 No.3

ALEXANDROV TOPOLOGIES AND NON-SYMMETRIC PSEUDO-METRICS

ALEXANDROV TOPOLOGIES AND NON-SYMMETRIC PSEUDO-METRICS

Abstract

한국수학교육학회지시리즈B:순수및응용수학