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Tilings of the hyperbolic plane of substitutive origin as subshifts of finite type on Baumslag–Solitar groups BS(1,n)
[Pavages hyperboliques engendrés par une substitution comme sous-décalages de type fini sur les groupes de Baumslag–Solitar BS(1,n)]
Comptes Rendus. Mathématique, Volume 362 (2024), pp. 553-580.

Nous présentons une technique pour relever certains pavages du plan hyperbolique discret, ceux définis par une substitution 1D, au sein d’un sous-décalage de type fini (SFT) d’entropie nulle sur les groupes de Baumslag–Solitar moyennables et non abéliens BS(1,n) avec n2. Lorsque ces pavages hyperboliques sont bien choisis, on montre que ce SFT est également apériodique et minimal. En guise d’application nous construisons un SFT fortement apériodique sur BS(1,n) avec une structure hiérarchique, qui est l’analogue de la construction de Robinson sur  2 ou de celle de Goodman–Strauss sur  2 .

We present a technique to lift some tilings of the discrete hyperbolic plane –tilings defined by a 1D substitution– into a zero entropy subshift of finite type (SFT) on non-abelian amenable groups BS(1,n) for n2. For well chosen hyperbolic tilings, this SFT is also aperiodic and minimal. As an application we construct a strongly aperiodic SFT on BS(1,n) with a hierarchical structure, which is an analogue of Robinson’s construction on  2 or Goodman–Strauss’s on  2 .

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DOI : 10.5802/crmath.571
Classification : 37B10, 20F99

Nathalie Aubrun 1 ; Michael Schraudner 2

1 Université Paris-Saclay, CNRS, Laboratoire Interdisciplinaire des Sciences du Numérique, 91400, Orsay, France
2 Centro de Modelamiento Matemático, Universidad de Chile, Av. Blanco Encalada 2120, Piso 7, Santiago de Chile
Licence : CC-BY 4.0
Droits d'auteur : Les auteurs conservent leurs droits
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Nathalie Aubrun; Michael Schraudner. Tilings of the hyperbolic plane of substitutive origin as subshifts of finite type on Baumslag–Solitar groups $\mathit{BS}(1,n)$. Comptes Rendus. Mathématique, Volume 362 (2024), pp. 553-580. doi : 10.5802/crmath.571. https://comptes-rendus.academie-sciences.fr/mathematique/articles/10.5802/crmath.571/

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