Lee, Kyoung-Ja;Jun, Young-Bae

  • Received : 2010.04.21
  • Published : 2011.10.31


The notion of bipolar fuzzy a-ideals of BCI-algebras is introduced, and their properties are investigated. Relations between bipolar fuzzy subalgebras, bipolar fuzzy ideals and bipolar fuzzy a-ideals are discussed. Conditions for a bipolar fuzzy ideal to be a bipolar fuzzy a-ideal are provided. Characterizations of bipolar fuzzy a-ideals are given. Using a finite collection of a-ideals, a bipolar fuzzy a-ideal is established.


bipolar fuzzy subalgebra;bipolar fuzzy ideal;bipolar fuzzy a-ideal


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