Cotransitive subsemigroups of the full transformation semigroup of finite set.
DOI:
https://doi.org/10.31558/1817-2237.2019.1-2.2Keywords:
cotransitive subsemigroup, full transformation semigroupAbstract
Cotransitive subsemigroups of the full transformation semigroup of finite set are described. Criterion of Sn normality for cotransitive subsemigroups of the full transformation semigroup is obtained.
References
Sullivan R.P. Ideals in transformation semigroups // Commentationes mathematicae Universitatis Carolinae. — 1978. — V. 19, № 3. — P. 431–446.
Levi I. Congruences on normal transformation semigroups // Math. Jap. — 2000. — V. 52, № 2. — P. 247–261.
Клиффорд А., Престон Г. Алгебраическая теория полугрупп: в 2 т. / Пер. с англ. — М.: Мир, 1972. — Т. 1. — 283 с.