Comptes Rendus
Topology/Dynamical Systems
Almost commensurability of 3-dimensional Anosov flows
Comptes Rendus. Mathématique, Volume 351 (2013) no. 3-4, pp. 127-129.

Two flows are almost commensurable if, up to removing finitely many periodic orbits and taking finite coverings, they are topologically equivalent. We prove that all suspensions of automorphisms of the 2-dimensional torus and all geodesic flows on unit tangent bundles to hyperbolic 2-orbifolds are pairwise almost commensurable.

Deux flots sont dits presque commensurables si, quitte à retirer à chacun un nombre fini dʼorbites périodiques puis prendre un revêtement fini, ils sont topologiquement équivalents. On montre que toutes les suspensions dʼautomorphismes hyperboliques du tore de dimension 2 et tous les flots géodésiques sur les fibrés unitaires tangents dʼorbisurfaces hyperboliques sont deux à deux presque commensurables.

Published online:
DOI: 10.1016/j.crma.2013.02.012

Pierre Dehornoy 1

1 Mathematisches Institut, Universität Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland
     author = {Pierre Dehornoy},
     title = {Almost commensurability of 3-dimensional {Anosov} flows},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {127--129},
     publisher = {Elsevier},
     volume = {351},
     number = {3-4},
     year = {2013},
     doi = {10.1016/j.crma.2013.02.012},
     language = {en},
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PB  - Elsevier
DO  - 10.1016/j.crma.2013.02.012
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Pierre Dehornoy. Almost commensurability of 3-dimensional Anosov flows. Comptes Rendus. Mathématique, Volume 351 (2013) no. 3-4, pp. 127-129. doi : 10.1016/j.crma.2013.02.012.

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