D. A. Oluyori

On Presentations of Semigroup of Transformations Restricted by an Equivalence

M. J. Ibrahim & D. A. Oluyori · Asian Research Journal of Mathematics · 2023

For a non-empty set X denote the full transformation semigroup of X by T(X). Let \(\sigma\) be an equivalence relation on X and E(X, \(\sigma\)) denotes the semigroup (under composition) of all \(\alpha\) : X \(\mapsto\) X, such that \(\sigma\) \(\subseteq\) ker(\(\alpha\) ). Sem...