ABELIAN KERNELS, SOLVABLE MONOIDS AND THE ABELIAN KERNEL LENGTH OF A FINITE MONOID

In this paper we do not make a clear distinction between what is introduction and preliminaries. In fact, we have decided to put it all in a single section which is divided into 3 subsections. The first, concerning kernels of finite monoids and related properties, should mainly serve as a general motivation for the study that we will do later with some particular classes of monoids. In the second subsection are introduced those classes of monoids.