Boundedness, compactness, and invariant norms for Banach cocycles over hyperbolic systems
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- by Boris Kalinin and Victoria Sadovskaya PDF
- Proc. Amer. Math. Soc. 146 (2018), 3801-3812 Request permission
Abstract:
We consider group-valued cocycles over dynamical systems with hyperbolic behavior. The base system is either a hyperbolic diffeomorphism or a mixing subshift of finite type. The cocycle $\mathcal {A}$ takes values in the group of invertible bounded linear operators on a Banach space and is Hölder continuous. We consider the periodic data of $\mathcal {A}$, i.e., the set of its return values along the periodic orbits in the base. We show that if the periodic data of $\mathcal {A}$ is uniformly quasiconformal or bounded or contained in a compact set, then so is the cocycle. Moreover, in the latter case the cocycle is isometric with respect to a Hölder continuous family of norms. We also obtain a general result on existence of a measurable family of norms invariant under a cocycle.References
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Additional Information
- Boris Kalinin
- Affiliation: Department of Mathematics, The Pennsylvania State University, University Park, Pennsylvania 16802
- MR Author ID: 603534
- Email: kalinin@psu.edu
- Victoria Sadovskaya
- Affiliation: Department of Mathematics, The Pennsylvania State University, University Park, Pennsylvania 16802
- MR Author ID: 674511
- Email: sadovskaya@psu.edu
- Received by editor(s): August 19, 2016
- Received by editor(s) in revised form: February 5, 2017
- Published electronically: June 13, 2018
- Additional Notes: The first author was supported in part by Simons Foundation grant 426243
The second author was supported in part by NSF grant DMS-1301693 - Communicated by: Nimish Shah
- © Copyright 2018 American Mathematical Society
- Journal: Proc. Amer. Math. Soc. 146 (2018), 3801-3812
- MSC (2010): Primary 37D20, 37H05
- DOI: https://doi.org/10.1090/proc/13720
- MathSciNet review: 3825835