Vague Ideals of Po-T-Semigroups

In this paper the notion of vague ideals in po-t-semigroups has been introduced and several properties have been investigated. Characteri- zation of regular po-t-semigroup in terms of vague ideals has been obtained. Operator po-semigroups of a po-t-semigroup have been made to work by obtaining various relationships between vague ideals of a po-t-semigroup and that of its operator po-semigroups.