Lower Bounds on Words Separation: Are There Short Identities in Transformation Semigroups?

Andrei A. Bulatov, Olga Karpova, Arseny M. Shur +1

The words separation problem, originally formulated by Goralcik and Koubek (1986), is stated as follows. Let $Sep(n)$ be the minimum number such that for any two words of length $\…