This journal serves as a platform for the speedy and efficient transmission of information on current research in semigroup theory. Coverage in the journal includes: algebraic semigroups, topological semigroups, partially ordered semigroups, semigroups of measures and harmonic analysis on semigroups, transformation semigroups, semigroups of operators, and applications of semigroup theory to other disciplines such as ring theory, category theory, automata, and logic.
Semigroup Forum features survey and research articles. It also contains research announcements, which describe new results, mostly without proofs, of full length papers appearing elsewhere as well as short notes, which detail such information as new proofs, significant generalizations of known facts, comments on unsolved problems, and historical remarks. In addition, the journal contains research problems; announcements of conferences, seminars, and symposia on semigroup theory; abstracts and bibliographical items; as well as listings of books, papers, and lecture notes of interest.
The Nine Lemma and the push forward construction for special Schreier extensions of monoids with operations
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