In this paper we examine the cartesian product of some fuzzy ideals. That is; if μ and à are fuzzy prime ideal, fuzzy semi prime ideal, fuzzy primary ideal, fuzzy semi primary ideals of R, then μ x à is a fuzzy prime ideal, fuzzy semi prime ideal, fuzzy primary ideal, fuzzy semi primary ideals of R x R. Moreover we showed that the level ideals of above fuzzy ideal of R x R are prime, semi prime, primary and semi primary ideals of R x R.
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