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On fuzzy bi-ideals in semigroups

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We characterize the fuzzy bi-ideal generated by a fuzzy subset in a semigroup and the fuzzy bi-ideal generated by a fuzzy subset $A$ such that $A \subseteq A^2$ in a semigroup with an identity element. Our work generalizes the characterization of fuzzy bi-ideals by Mo and Wang ([8]).

Abstract

We characterize the fuzzy bi-ideal generated by a fuzzy subset in a semigroup and the fuzzy bi-ideal generated by a fuzzy subset $A$ such that $A \subseteq A^2$ in a semigroup with an identity element. Our work generalizes the characterization of fuzzy bi-ideals by Mo and Wang ([8]).

참고문헌 (13)

  1. J.M. Anthony, "Fuzzy groups redened", J. Math. Anal. Appl, 69, pp.124~130 (1979)
  2. N. Kuroki, "Fuzzy bi-ideals in semigroups", Comment. Math. Univ. St. Pauli, 28, pp.17~21 (1979)
  3. N. Kuroki, "On fuzzy ideals and bi-ideals in semigroups", Fuzzy Sets and Systems, 5, pp.203~215 (1981)
  4. N. Kuroki, "Fuzzy semiprime ideals in semigroups", Fuzzy Sets and Systems, 8, pp.71~79 (1982)
  5. N. Kuroki, "On fuzzy semigroups", Inform. Sci, 53, pp.203~236 (1991)
  6. N. Kuroki, "Fuzzy semiprime quasi-ideals in semigroups", Inform. Sci, 75, pp.201~211 (1993)
  7. W.J. Liu, "Fuzzy invariant subgroups and fuzzy ideals", Fuzzy Sets and Systems, 8, pp.133~139 (1982)
  8. Z. W. Mo, "Fuzzy ideals generated by fuzzy sets in semigroups", Inform. Sci, 86, pp.203~210 (1995)
  9. A. Rosenfeld, "Fuzzy Groups", J. Math. Anal. Appl, 35, pp.512~517 (1971)
  10. S. Sessa, "On fuzzy subgroups and fuzzy ideals under triangular norms", Fuzzy Sets and Systems, 13, pp.95~100 (1984)
  11. X. P.Wang, "Fuzzy regular subsemigroups in semigroups", Inform. Sci, 68, pp.225~231 (1993)
  12. X. Y. Xie, "Fuzzy ideals in semigroups", J. Fuzzy Math, 7, pp.357~365 (1999)
  13. L.A. Zadeh, "Fuzzy sets", Inform. and Control, 8, pp.338~353 (1965)

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