• Title/Summary/Keyword: precontinuous functions

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ON L-FUZZY ALMOST PRECONTINUOUS FUNCTIONS

  • Min, Won-Keun
    • The Pure and Applied Mathematics
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    • v.3 no.1
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    • pp.53-58
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    • 1996
  • In 1981, R . Badard introduced the notion of fuzzy pretopological spaces and their representation[1]. And in 1992, R. Badard, et al. introduced the L-fuzzy pretopological spaces and studied properties of continuity, open map, closed map, and homeomorphism in L-fuzzy pretopological spaces. In this paper we introduce and study the concepts of almost continuous functions and weakly pre-continuous functions on L-fpts's.(omitted)

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ON MINIMAL PRECONTINUOUS FUNCTIONS

  • Min, Won Keun;Kim, Young Key
    • Journal of the Chungcheong Mathematical Society
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    • v.22 no.4
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    • pp.667-673
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    • 2009
  • In this paper, we introduce the notions of minimal precontinuity, m-preclosed graph, almost m-precompact and m-precompact and investigate some properties for such notions.

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ON THE QUASI-(θ, s)-CONTINUITY

  • Kim, Seungwook
    • Korean Journal of Mathematics
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    • v.20 no.4
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    • pp.441-449
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    • 2012
  • The quasi-(${\theta}$, s)-continuity is a weakened form of the weak (${\theta}$, s)-continuity and equivalent to the weak quasi-continuity. The basic properties of those functions are investigated in concern with the other weakened continuous functions. It turns out that the open property of a function and the extremall disconnectedness of the spaces are crucial tools for the survey of these functions.

SOME GENERALIZATIONS OF WEAKLY M-SEMI-CONTINUOUS AND WEAKLY M-PRECONTINUOUS FUNCTIONS

  • Noiri, Takashi;Popa, Valeriu
    • Journal of the Chungcheong Mathematical Society
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    • v.29 no.2
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    • pp.229-253
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    • 2016
  • As a generalization of (i, j)-weakly m-continuous functions [43], we introduce the notion of weakly M(i, j)-continuous functions and obtain many characterizations and some properties of the functions. We show that the function is a unified form of some functions between m-spaces and certain kinds of weakly continuous functions in bitopological spaces.

ON WEAKENED FORMS OF (θ, s)-CONTINUITY

  • Kim, Seungwook
    • Korean Journal of Mathematics
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    • v.14 no.2
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    • pp.249-258
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    • 2006
  • The weakened forms of the (${\theta},s$)-continuous function are introduced and their basic properties are investigated in concern with the other weakened continuous function. The open property of a function and the extremal disconnectedness of the spaces are crucial tools for the survey of these functions.

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ON STRONGLY θ-e-CONTINUOUS FUNCTIONS

  • Ozkoc, Murad;Aslim, Gulhan
    • Bulletin of the Korean Mathematical Society
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    • v.47 no.5
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    • pp.1025-1036
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    • 2010
  • A new class of generalized open sets in a topological space, called e-open sets, is introduced and some properties are obtained by Ekici [6]. This class is contained in the class of $\delta$-semi-preopen (or $\delta-\beta$-open) sets and weaker than both $\delta$-semiopen sets and $\delta$-preopen sets. In order to investigate some different properties we introduce two strong form of e-open sets called e-regular sets and e-$\theta$-open sets. By means of e-$\theta$-open sets we also introduce a new class of functions called strongly $\theta$-e-continuous functions which is a generalization of $\theta$-precontinuous functions. Some characterizations concerning strongly $\theta$-e-continuous functions are obtained.