Cotransitive subsemigroups of the full transformation semigroup Tn.

Autor

T. Voloshyna Department of Information Systems, Physics and Mathematics, Lesia Ukrainka Eastern European National University, Lutsk, Ukraine

Cotransitive subsemigroups, transformation semigroup

The concept of a cotransitive subsemigroup for transformations semigroups was introduced by R.P. Sullivan in the work [1].

R.P. Sullivan, Ideals in transformation semigroups, Comment. Math. Univ. Carolin. 19 (1978), 431–446.

I. Levi, Congruences on normal transformation semigroups Math. Jap. 52 (1980), no. 2, 247–261.