- #1
alexfloo
- 192
- 0
The Wikipedia article for the bicyclic monoid gives three constructions, one of which starts with a free semigroup. It describes the operation for the bicyclic monoid as concatenation, but the remain descriptions are definitely not concatenation (e.g. the product of the two generators is the empty string).
My intuition is that they intended to say that it is "something similar to concatenation," but I just wanted to double-check and make sure I'm not missing something here.
My intuition is that they intended to say that it is "something similar to concatenation," but I just wanted to double-check and make sure I'm not missing something here.