fuzzy n-fold obstinate ideals in mv -algebras

Abstract. in this paper, we introduce the notion of n-fold boolean ideals of an mv -algebra and consider the quotient algebras induced by n-fold boolean ideals. also we prove that i is a n-fold boolean ideal of an mv -algebra if and only if a/i is a n+1-bounded mv -algebra if and only if a/i is a subdirect product of algebras lk,with 2 le; k le; n.finally, we introduce the notion of fuzzy n-fold obstinate ideals in mv -algebras. we give some characterizations of fuzzy n-fold obstinate ideals.