This book is an indispensable source for anyone with an interest in semigroup theory or
whose research overlaps with this increasingly important and active field of mathematics. It …

This book introduces recently developed ideas and techniques in semigroup theory to
provide a handy reference guide previously unavailable in a single volume. The opening …

On saturated permutative varieties and consequences of permutation identities Page 1 J.
Austral. Math. Soc. (Series A) 38 (1985), 186-197 ON SATURATED PERMUTATTVE …

We establish a necessary condition (E) for a semigroup variety to be closed under the taking
of epimorphisms and a necessary condition (S) for a variety to consist entirely of saturated …

We show that for semigroups all permutation identities are preserved under epis and that all
subvarieties of the permutative variety defined by any permutation identity\[{x_1}{x_2}\cdots …

1. Introduction. The purpose of this essay “is to highlight the connec-tions and interplay
between the concepts of epimorphisms, dominions and amalgams. This will be done largely …

A semigroup with an epimorphically embedded subband Page 1 BULL. AUSTRAL. MATH.
SOC. 20M05, 20M07 VOL. 27 (1983), 231-242. A SEMIGROUP WITH AN EPIMORPHICALLY …

In this paper, we discussed some saturated classes of ℋ‐commutative semigroups, left
(right) regular semigroups, medial semigroups, and paramedial semigroups. The results of …

We show that a semigroup satisfying a heterotypical identity of which at least one side has
no repeated variable is saturated and find sufficient conditions on a homotypical identity …

In a forthcoming paper, NM Khan gives a condition for a variety of commutative semigroups
V to be saturated in the sense of Howie and Isbell (1967)(ie epis are onto for each S∈ V) …