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Updated: Nov 11, 2025

Magnetic Tweezers for the Measurement of Twist and Torque
Published on: May 19, 2014
Topological characterization of toroidal chaos: A branched manifold for the Deng toroidal attractor
Sylvain Mangiarotti1, Christophe Letellier2
1Centre d'Études Spatiales de la Biosphère, UPS-CNRS-CNES-IRD-INRA, Observatoire Midi-Pyrénées, 18 avenue Édouard Belin, 31401 Toulouse, France.
Abstract:
When a chaotic attractor is produced by a three-dimensional strongly dissipative system, its ultimate characterization is reached when a branched manifold-a template-can be used to describe the relative organization of the unstable periodic orbits around which it is structured. If topological characterization was completed for many chaotic attractors, the case of toroidal chaos-a chaotic regime based on a toroidal structure-is still challenging. We here investigate the topology of toroidal chaos, first by using an inductive approach, starting from the branched manifold for the Rössler attractor. The driven van der Pol system-in Robert Shaw's form-is used as a realization of that branched manifold. Then, using a deductive approach, the branched manifold for the chaotic attractor produced by the Deng toroidal system is extracted from data.
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