TY - JOUR A1 - Dimitrova, Ilinka A1 - Koppitz, Jörg T1 - On the maximal regular subsemigroups of ideals of order-preserving or order-reversing transformations JF - Semigroup forum N2 - We characterize the maximal regular subsemigroups of the ideals of the semigroup of all order-preserving transformations as well as of the semigroup of all order-preserving or order-reversing transformations on a finite ordered set. KW - Transformation semigroups KW - Regular semigroups KW - Order-preserving transformations KW - Order-reversing transformations KW - Maximal subsemigroups Y1 - 2011 U6 - https://doi.org/10.1007/s00233-010-9272-8 SN - 0037-1912 VL - 82 IS - 1 SP - 172 EP - 180 PB - Springer CY - New York ER -