- UHRA Home
- Browsing by Author
Browsing by Author "Abu-Ghazalh, N."
Now showing items 1-1 of 1
-
A classification of disjoint unions of two or three copies of the free monogenic semigroup
Abu-Ghazalh, N.; Mitchell, J. D.; Péresse, Y.; Ruškuc, N. (2015-08-01)We prove that, up to isomorphism and anti-isomorphism, there are only two semigroups which are the union of two copies of the free monogenic semigroup. Similarly, there are only nine semigroups which are the union of three ...