Young Bae Jun - Department of Mathematics Education and (RINS), Gyeongsang National University, Chinju ۶۶۰-۷۰۱, Korea
Chul Hwan Park - Department of Mathematics, University of Ulsan, Ulsan ۶۸۰-۷۴۹, Korea

The notion of vague ideals in pseudo MV-algebras is introduced,and several properties are investigated. Conditions for a vague set to be avague ideal are provided. Conditions for a vague ideal to be implicative aregiven. Characterizations of (implicative, prime) vague ideals are discussed.The smallest vague ideal containing a given vague set is established. Primeand implicative extension property for a vague ideal is discussed.

Pseudo MV-algebra, (implicative, prime) vague ideal