DYNAMICAL SYSTEMS AND TESSELATIONS: DETECTING DETERMINISM IN DATA

Data measurements from a dynamical system may be used to build triangulations and tesselations which can at least when the system has relatively low-dimensional attractors or invariant manifolds give topological, geometric and dynamical information about the system. The data may consist of a time series, possibly reconstructed by embedding, or of several such series; transients can be put to good use. The topological information which can be found includes dimension and genus of a manifold containing the state space. Geometric information includes information about folds, branches and other chaos generators. Dynamical information is obtained by using the tesselation to construct a map with stated smoothness properties and having the same dynamics as the data; the resulting dynamical model may be tested in the way that any scientific theory may be tested, by making falsifiable predictions.