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“8”-shaped attractor and its topologically equivalents. The same data sets were reconstructed in three dimensions with different delay times to produce topologically equivalent attractors. (A) A typical “8” shaped attractor made of two twisted loops can be obtained for a delay time of τ = 1900Δt. Using a delay time τ = 2200Δt, the attractor is “untangled” and becomes quite flat (B).
