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Ergodic Theory of Equivariant Diffeomorphisms: Markov Partitions and Stable Ergodicity

Michael Field University of Houston, Houston, TX
Matthew Nicol University of Surrey, Guildford, England
Available Formats:
Electronic ISBN: 978-1-4704-0401-7
Product Code: MEMO/169/803.E
List Price: $63.00 MAA Member Price:$56.70
AMS Member Price: $37.80 Click above image for expanded view Ergodic Theory of Equivariant Diffeomorphisms: Markov Partitions and Stable Ergodicity Michael Field University of Houston, Houston, TX Matthew Nicol University of Surrey, Guildford, England Available Formats:  Electronic ISBN: 978-1-4704-0401-7 Product Code: MEMO/169/803.E  List Price:$63.00 MAA Member Price: $56.70 AMS Member Price:$37.80
• Book Details

Memoirs of the American Mathematical Society
Volume: 1692004; 100 pp
MSC: Primary 37;

We obtain stability and structural results for equivariant diffeomorphisms which are hyperbolic transverse to a compact (connected or finite) Lie group action and construct ‘$\Gamma$-regular’ Markov partitions which give symbolic dynamics on the orbit space. We apply these results to the situation where $\Gamma$ is a compact connected Lie group acting smoothly on $M$ and $F$ is a smooth (at least $C^2$) $\Gamma$-equivariant diffeomorphism of $M$ such that the restriction of $F$ to the $\Gamma$- and $F$-invariant set $\Lambda\subset M$ is partially hyperbolic with center foliation given by $\Gamma$-orbits. On the assumption that the $\Gamma$-orbits all have dimension equal to that of $\Gamma$, we show that there is a naturally defined $F$- and $\Gamma$-invariant measure $\nu$ of maximal entropy on $\Lambda$ (it is not assumed that the action of $\Gamma$ is free). In this setting we prove a version of the Livšic regularity theorem and extend results of Brin on the structure of the ergodic components of compact group extensions of Anosov diffeomorphisms. We show as our main result that generically $(F,\Lambda,\nu)$ is stably ergodic (openness in the $C^2$-topology). In the case when $\Lambda$ is an attractor, we show that $\Lambda$ is generically a stably SRB attractor within the class of $\Gamma$-equivariant diffeomorphisms of $M$.

Graduate students and research mathematicians interested in dynamical systems and ergodic theory.

• Chapters
• 1. Introduction
• 2. Equivariant geometry and dynamics
• 3. Technical preliminaries
• Part 1. Markov partitions
• 4. Markov partitions for finite group actions
• 5. Transversally hyperbolic sets
• 6. Markov partitions for basic sets
• Part 2. Stable ergodicity
• 7. Preliminaries
• 8. Livšic regularity and ergodic components
• 9. Stable ergodicity
• Requests

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Volume: 1692004; 100 pp
MSC: Primary 37;

We obtain stability and structural results for equivariant diffeomorphisms which are hyperbolic transverse to a compact (connected or finite) Lie group action and construct ‘$\Gamma$-regular’ Markov partitions which give symbolic dynamics on the orbit space. We apply these results to the situation where $\Gamma$ is a compact connected Lie group acting smoothly on $M$ and $F$ is a smooth (at least $C^2$) $\Gamma$-equivariant diffeomorphism of $M$ such that the restriction of $F$ to the $\Gamma$- and $F$-invariant set $\Lambda\subset M$ is partially hyperbolic with center foliation given by $\Gamma$-orbits. On the assumption that the $\Gamma$-orbits all have dimension equal to that of $\Gamma$, we show that there is a naturally defined $F$- and $\Gamma$-invariant measure $\nu$ of maximal entropy on $\Lambda$ (it is not assumed that the action of $\Gamma$ is free). In this setting we prove a version of the Livšic regularity theorem and extend results of Brin on the structure of the ergodic components of compact group extensions of Anosov diffeomorphisms. We show as our main result that generically $(F,\Lambda,\nu)$ is stably ergodic (openness in the $C^2$-topology). In the case when $\Lambda$ is an attractor, we show that $\Lambda$ is generically a stably SRB attractor within the class of $\Gamma$-equivariant diffeomorphisms of $M$.

Graduate students and research mathematicians interested in dynamical systems and ergodic theory.

• Chapters
• 1. Introduction
• 2. Equivariant geometry and dynamics
• 3. Technical preliminaries
• Part 1. Markov partitions
• 4. Markov partitions for finite group actions
• 5. Transversally hyperbolic sets
• 6. Markov partitions for basic sets
• Part 2. Stable ergodicity
• 7. Preliminaries
• 8. Livšic regularity and ergodic components
• 9. Stable ergodicity
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