Doroshenko V. V.
Ukr. Mat. Zh. - 2009. - 61, № 6. - pp. 723-732
We consider semigroups of endomorphisms of linearly ordered sets ℕ and ℤ and their subsemigroups of cofinite endomorphisms. We study the Green relations, groups of automorphisms, conjugacy, centralizers of elements, growth, and free subsemigroups in these subgroups.