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Stable mixing for cat maps and quasi-morphisms of the modular group | | Leonid Polterovich
; Zeev Rudnick
; | | Date: |
14 Sep 2000 | | Subject: | Dynamical Systems; Group Theory; Number Theory; Mathematical Physics MSC-class: (2000) 37Axx (Primary) 11F06, 20F69 (Secondary) | math.DS math-ph math.GR math.MP math.NT | | Abstract: | It is well-known that the action of a hyperbolic element (``cat map’’) of the modular group on the 2-torus has strong chaotic dynamical properties such as mixing and exponential decay of correlations. In this note we study stability of this behaviour with respect to kicks. Our approach is based on geometric group theory, and in particular on a new result on quasimorphisms of the modular group. | | Source: | arXiv, math.DS/0009143 | | Services: | Forum | Review | PDF | Favorites | |
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