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Partially hyperbolic endomorphisms with expanding linear part
Published online by Cambridge University Press: 28 May 2024
Abstract
In this paper, we study transitivity of partially hyperbolic endomorphisms of the two torus whose action in the first homology group has two integer eigenvalues of moduli greater than one. We prove that if the Jacobian is everywhere greater than the modulus of the largest eigenvalue, then the map is robustly transitive. For this, we introduce Blichfedt’s theorem as a tool for extracting dynamical information from the action of a map in homology. We also treat the case of specially partially hyperbolic endomorphisms, for which we obtain a complete dichotomy: either the map is transitive and conjugated to its linear part, or its unstable foliation must contain an annulus which may either be wandering or periodic.
MSC classification
Secondary:
37C05: Smooth mappings and diffeomorphisms
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- © The Author(s), 2024. Published by Cambridge University Press
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