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math.DS2025
Profinite approach to S-adic shift spaces I: Saturating directive sequences
Jorge Almeida, Alfredo Costa, Herman Goulet-Ouellet
This paper is the first in a series of three, about (relatively)free profinite semigroups and S-adic representations of minimal shift spaces. We associate to each primitive S-adic…
math.DS2024★ 1 cited
Density of group languages in shift spaces
Valérie Berthé, Herman Goulet-Ouellet, Carl-Fredrik Nyberg-Brodda +2
The density of a rational language can be understood as the frequency of some pattern in the shift space, for example a pattern like "words with an even number of a given letter."…