ISBN-13: 9786139877645 / Angielski / Miękka / 2018 / 52 str.
In this work, three particular types of semigroups are considered namely: the bisimple inverse w-semigroup, the -bisimple type A -w semigroup and the -bisimple type A I-semigroup. Their consideration is motivated by a construction known as the Bruck-Reilly extension of a monoid. In addition, the connection between inverse semigroups and type A semigroups as well as the properties of these types of semigroups are presented.