• Title/Summary/Keyword: Double fuzzy topology

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Double Fuzzy Preproximity Spaces

  • Zahran, Ahmed M.;Abd-Allah, M. Azab;El-Saady, Kamal;El-Rahman, Abd El-Nasser G. Abd
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.7 no.4
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    • pp.249-255
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    • 2007
  • In this paper, we introduce the concept of double fuzzy preproximity spaces as a generalization of a fuzzy preproximity spaces and investigate some of their properties. Also we study the relationships between double fuzzy preproximity spaces, double fuzzy topological spaces and double fuzzy closure spaces. In addition to this was the introduction of the concept of double fuzzy neighborhood system and has been studying the connection with double fuzzy preproximity, which resulted in the definition of the concept double fuzzy preproximal neighborhood.

Generalized Double Fuzzy Semi-Basically Disconnected Spaces

  • Mohammed, Fatimah M.;Noorani, Mohd Salmi Md.;Ghareeb, A.
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.14 no.3
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    • pp.216-221
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    • 2014
  • In this paper, we introduce the concept of generalized double fuzzy semi-basically disconnected space and related notions such as (r, s)-generalized fuzzy semiopen-$F_{\sigma}$ sets, (r, s)-generalized fuzzy semiclosed-$G_{\delta}$ sets, generalized double fuzzy $semi^*$-open function, generalized double fuzzy $semi^*$-continuous function and generalized double fuzzy $semi^*$-irresolute function. Some interesting properties and characterizations of the concepts introduced are studied.

An (r,s)-derived sets and double fuzzy closure operators

  • Zahran, Ahmed M.;Abd-Allah, M. Azab;EI-Saady, Kamal;EI-Rahman, Abd EI-Nasser G. Abd
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.8 no.1
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    • pp.6-10
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    • 2008
  • In this paper, we introduce the concept of fuzzy (r, s)-adherence points, fuzzy (r, s)-accumulation points and fuzzy (r, s)-derived sets in double fuzzy topology. We investigate some of their properties. The relationship with double fuzzy closure operator was studied.

L-pre-separation axioms in (2, L)-topologies based on complete residuated lattice-valued logic

  • Zeyada, Fathei M.;Abd-Allahand, M. Azab;Mousa, A.K.
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.9 no.2
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    • pp.115-127
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    • 2009
  • In the present paper we introduce and study L-pre-$T_0$-, L-pre-$T_1$-, L-pre-$T_2$ (L-pre-Hausdorff)-, L-pre-$T_3$ (L-pre-regularity)-, L-pre-$T_4$ (L-pre-normality)-, L-pre-strong-$T_3$-, L-pre-strong-$T_4$-, L-pre-$R_0$-, L-pre-$R_1$-separation axioms in (2, L)-topologies where L is a complete residuated lattice.Sometimes we need more conditions on L such as the completely distributive law or that the "$\bigwedge$" is distributive over arbitrary joins or the double negation law as we illustrate through this paper. As applications of our work the corresponding results(see[1,2]) are generalized and new consequences are obtained.