A Characterization of Amenable Groups by Besicovitch Pseudodistances - Archive ouverte HAL
Communication Dans Un Congrès Année : 2020

A Characterization of Amenable Groups by Besicovitch Pseudodistances

Silvio Capobianco
  • Fonction : Auteur
  • PersonId : 884133
Pierre Guillon
Camille Noûs

Résumé

The Besicovitch pseudodistance defined in [BFK99] for one-dimensional configurations is invariant by translations. We generalize the definition to arbitrary countable groups and study how properties of the pseudodistance, including invariance by translations, are determined by those of the sequence of finite sets used to define it. In particular, we recover that if the Besicovitch pseudodistance comes from a nondecreasing exhaustive Følner sequence, then every shift is an isometry. For non-Følner sequences we prove that some shifts are not isometries, and the Besicovitch pseudodistance with respect to some subsequence even makes them non-continuous.
Fichier principal
Vignette du fichier
496967_1_En_8_Chapter.pdf (415.17 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-03100934 , version 1 (05-05-2022)

Licence

Identifiants

Citer

Silvio Capobianco, Pierre Guillon, Camille Noûs. A Characterization of Amenable Groups by Besicovitch Pseudodistances. 26th International Workshop on Cellular Automata and Discrete Complex Systems (AUTOMATA), Aug 2020, Stockholm, Sweden. pp.99-110, ⟨10.1007/978-3-030-61588-8_8⟩. ⟨hal-03100934⟩

Relations

129 Consultations
91 Téléchargements

Altmetric

Partager

More