Teshome, Zelalem (PhD)Zerihun, Nigatu2020-12-112023-11-042020-12-112023-11-042008-06-06http://etd.aau.edu.et/handle/123456789/23955This project work concentrates on the ideal theory of subtraction algebras. We start it with lattice, semi-lattice, Boolean algebra, supremum and infimum of a set. The main body of the project recapitulates subtraction algebra and ideal of subtraction algebra.enIdeal theorySubtractionAlgebrasThesis