Asymptotic Density of Zimin Words

Word $W$ is an instance of word $V$ provided there is a homomorphism $\phi$ mapping letters to nonempty words so that $\phi(V) = W$. For example, taking $\phi$ such that $\phi(c)=fr$, $\phi(o)=e$ and $\phi(l)=zer$, we see that "freezer" is an instance of "cool". Let $\mathbb{I}...

Full description

Bibliographic Details
Main Authors: Joshua Cooper, Danny Rorabaugh
Format: Article
Language:English
Published: Discrete Mathematics & Theoretical Computer Science 2016-03-01
Series:Discrete Mathematics & Theoretical Computer Science
Subjects:
Online Access:https://dmtcs.episciences.org/1302/pdf