Abstract
Symbolic dynamics did start with Hadamard [1] ideas to more complicated systems in 1898. The most important point of this work is the simple description of the possible sequences that can arise in geodesic flows on surfaces of negative curvature. He introduced a finite set of forbidden symbol pairs and defined possible sequences as those that do not contain any forbidden symbol pair. Later on, Hedlund and Morse [2, 3] used this method to prove the existence of periodic and other dynamics in different classical dynamical systems. They showed that in many circumstances such a finite description of a system’s dynamics is possible and performed their investigations by finding interesting sequences satisfying the constraints defined by the corresponding symbolic dynamical system.KeywordsHeart Rate VariabilityTwin PairWord TypeSymbolic DynamicHeart Rate Variability AnalysisThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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