Hatir E.2020-03-262020-03-2620111331-0623https://hdl.handle.net/20.500.12395/27171In this paper, we investigated some properties of a ?? - I - open set [6] and a semi* - I - open set [6] in ideal topological spaces. Moreover, the relationships of other related classes of sets are investigated. Also, a new decomposition of continuous functions is obtained by using ? - ? - I - continuous and S* - continuous functions. © 2011 Department of Mathematics, University of Osijek.eninfo:eu-repo/semantics/closedAccess??-I-open setIdeal topological spaceS* -continuousSemi* -I -open setArticle162433445Q3