Even three decades ago, the words 'combinatorial algebra' contrasting, for in stance, the words 'combinatorial topology, ' were not a common designation for some branch of mathematics. The collocation 'combinatorial group theory' seems to ap pear first as the title of the book by A. Karras, W. Magnus, and D. Solitar 182] and, later on, it served as the title of the book by R. C. Lyndon and P. Schupp 247]. Nowadays, specialists do not question the existence of 'combinatorial algebra' as a special algebraic activity. The activity is distinguished not only by its objects of research (that are...
Even three decades ago, the words 'combinatorial algebra' contrasting, for in stance, the words 'combinatorial topology, ' were not a common designati...
