Cantor-Bendixson ranks of countable SFTs

Ilkka Törmä

We show that the possible Cantor-Bendixson ranks of countable SFTs are exactly the finite ordinals and ordinals of the form $\lambda + 3$, where $\lambda$ is a computable ordinal. This result was claimed by the author in his PhD dissertation, but the proof contains an error, which is fixed in this note.

Knowledge Graph

arrow_drop_up

Comments

Sign up or login to leave a comment