مجتبی صداقت جو

The paper is a pursuing work on uniform notion for acts over semigroups perceived as an overclass of subdirectly irreducible acts. In this paper we investigate uniform notion for some classes of semigroups and corresponding acts. We prove that on left zero semigroups uniform acts are the same subdirectly irreducible acts. Ultimately, we clarify right uniform rectangular band and left (0-)simple semigroups.