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On Mean Open and Closed Sets

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In this paper, we introduce the notions of mean open and closed sets in topological spaces, and obtain some properties of such sets. We observe that proper paraopen and paraclosed sets are identical to mean open and closed sets respectively.

Abstract

In this paper, we introduce the notions of mean open and closed sets in topological spaces, and obtain some properties of such sets. We observe that proper paraopen and paraclosed sets are identical to mean open and closed sets respectively.

참고문헌 (6)

  1. Basavaraj M. Ittanagi, "On Paraopen Sets and Maps in Topological Spaces", Kyungpook Mathematical Journal, 56(1), pp.301~310 (2016), 경북대학교 자연과학대학 수학과
  2. Ajoy Mukharjee, "On maximal, minimal open and closed sets", 대한수학회논문집, 30(3), pp.277~282 (2015), 대한수학회
  3. F. Nakaoka, "Minimal closed sets and maximal closed sets", Int. J. Math. Math. Sci., pp.8~ (2006)[DOI]
  4. F. Nakaoka, "Some properties of maximal open sets", Int. J. Math. Math. Sci., 2003(21), pp.1331~1340 (2003)
  5. F. Nakaoka, "Some applications of minimal open sets", Int. J. Math. Math. Sci., 27(8), pp.471~476 (2001)
  6. L. A. Steen, "Counterexamples in Topology" (1970), Holt, Rinehart, and Winston

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