Hostname: page-component-89b8bd64d-rbxfs Total loading time: 0 Render date: 2026-05-13T05:46:05.407Z Has data issue: false hasContentIssue false

Eigenvalues and strong orbit equivalence

Published online by Cambridge University Press:  21 July 2015

MARÍA ISABEL CORTEZ
Affiliation:
Departamento de Matemática y Ciencia de la Computación, Facultad de Ciencia, Universidad de Santiago de Chile, Av. Libertador Bernardo O’Higgins 3363, Santiago, Chile email maria.cortez@usach.cl Fédération de Recherche ARC Mathématiques, CNRS-FR 3399, Université de Picardie Jules Verne, 33 rue Saint Leu, 80000 Amiens, France
FABIEN DURAND
Affiliation:
Laboratoire Amiénois de Mathématiques Fondamentales et Appliquées, CNRS-UMR 7352, Université de Picardie Jules Verne, 33 rue Saint Leu, 80000 Amiens, France email fabien.durand@u-picardie.fr, samuel.petite@u-picardie.fr
SAMUEL PETITE
Affiliation:
Laboratoire Amiénois de Mathématiques Fondamentales et Appliquées, CNRS-UMR 7352, Université de Picardie Jules Verne, 33 rue Saint Leu, 80000 Amiens, France email fabien.durand@u-picardie.fr, samuel.petite@u-picardie.fr

Abstract

We give conditions on the subgroups of the circle to be realized as the subgroups of eigenvalues of minimal Cantor systems belonging to a determined strong orbit equivalence class. Actually, the additive group of continuous eigenvalues $E(X,T)$ of the minimal Cantor system $(X,T)$ is a subgroup of the intersection $I(X,T)$ of all the images of the dimension group by its traces. We show, whenever the infinitesimal subgroup of the dimension group associated with $(X,T)$ is trivial, the quotient group $I(X,T)/E(X,T)$ is torsion free. We give examples with non-trivial infinitesimal subgroups where this property fails. We also provide some realization results.

Information

Type
Research Article
Copyright
© Cambridge University Press, 2015 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable