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Quasi-Normal Spaces and πg-Closed Sets

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Abstract

We introduce the notion of πg-closed sets and use it to obtain a characterization and preservation theorems of quasi-normal spaces.

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Authors and Affiliations

  1. Department of Mathematics, University of Helsinki, PL 4 Yliopistonkatu 5, 00014, Helsingin Yliopisto, Finland

    J. Dontchev

  2. Department of Mathematics, Yatsushiro College of Technology, Yatsushiro, Kumamoto, 866-8501, Japan

    T. Noiri

Authors
  1. J. Dontchev
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  2. T. Noiri
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Dontchev, J., Noiri, T. Quasi-Normal Spaces and πg-Closed Sets. Acta Mathematica Hungarica 89, 211–219 (2000). https://doi.org/10.1023/A:1010607824929

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