Journal article
Coboundary expansion and Gromov hyperbolicity
- Abstract:
- We prove that if a compact n-manifold admits a sequence of residual covers that form a coboundary expander in dimension n −2, then the manifold has Gromov-hyperbolic fundamental group. In particular, residual sequences of covers of non-hyperbolic compact connected irreducible 3-manifolds are not 1-coboundary expanders.
- Publication status:
- Accepted
- Peer review status:
- Peer reviewed
Actions
Authors
+ European Research Council
More from this funder
- Funder identifier:
- https://ror.org/0472cxd90
- Grant:
- 850930
- Publisher:
- EMS Press
- Journal:
- Groups, Geometry, and Dynamics More from this journal
- Acceptance date:
- 2025-07-21
- EISSN:
-
1661-7215
- ISSN:
-
1661-7207
- Language:
-
English
- Pubs id:
-
2247537
- Local pid:
-
pubs:2247537
- Deposit date:
-
2025-07-22
Terms of use
- Notes:
- This article has been accepted for publication in Groups, Geometry, and Dynamics.
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