科研之友
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摘要
Many dynamical systems can be naturally represented as Bratteli-Vershik (or adic) systems, which provide an appealing combinatorial description of their dynamics. If an adic system X is linearly recurrent, then we show how to represent X using a two-dimensional subshift of finite type Y; each 'row' in a Y-admissible configuration corresponds to an infinite path in the Bratteli diagram of X, and the vertical shift on Y corresponds to the 'successor' map of X. Any Y-admissible configuration can then be recoded as the space-time diagram of a one-dimensional cellular automaton Phi; in this way X is embedded in Phi (i.e. X is conjugate to a subsystem of Phi). With this technique, we can embed many odometers, Toeplitz systems, and constant-length substitution systems in one-dimensional cellular automata.
- 出版日期2010-10
