Mathematical Sciences Classification System
37Bxx - Topological dynamics 
[See also  54H20]
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                            37B05Transformations and group actions with special properties (minimality, distality, proximality, etc.)
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                            37B10
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                            37B15Cellular automata [See also 68Q80]
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                            37B20Notions of recurrence
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                            37B25Lyapunov functions and stability; attractors, repellers
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                            37B30Index theory, Morse-Conley indices
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                            37B35Gradient-like and recurrent behavior; isolated (locally maximal) invariant sets
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                            37B40Topological entropy
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                            37B45Continua theory in dynamics
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                            37B50Multi-dimensional shifts of finite type, tiling dynamics
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                            37B55Nonautonomous dynamical systems
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                            37B99None of the above, but in this section