On relative ranks of the semigroup of orientation-preserving transformations on infinite chains
Ilinka Dimitrova, Jörg Koppitz · Asian-European Journal of Mathematics · 2020
In this paper, we determine the relative rank of the semigroup [Formula: see text] of all orientation-preserving transformations on infinite chains modulo the semigroup [Formula: see text] of all order-preserving transformations.