ISBN-13: 9786135841954 / Angielski / Miękka / 2018 / 184 str.
The structure of the book is dictated by the conviction that the ideas of quasi-injective systems and its generalizations are among the most important fundamental ideas of the S-system and consequently should be placed as far as possible at its absolute starting point. Thereby It can be considered as references for graduate students and researchers in the field of algebra, especially in systems and monoids.