Multistability in symmetric chaotic systems

C Li, W Hu, JC Sprott, X Wang - The European Physical Journal Special …, 2015 - Springer
Chaotic dynamical systems that are symmetric provide the possibility of multistability as well
as an independent amplitude control parameter. The Rössler system is used as a candidate …

Dynamical taxonomy: Some taxonomic ranks to systematically classify every chaotic attractor

C Letellier, N Stankevich, OE Rössler - International Journal of …, 2022 - World Scientific
Characterizing accurately chaotic behaviors is not a trivial problem and must allow to
determine the properties that two given chaotic invariant sets share or not. The underlying …

Flatness-based real-time control of experimental analog chaotic oscillators

L Minati, M Frasca, PA Valdes-Sosa, JP Barbot… - Chaos, Solitons & …, 2023 - Elsevier
In the control of non-linear dynamics, the notion of flatness provides a systematic framework
for analyzing the observability and controllability of a system. Several successful …

Investigating nonlinear dynamics from time series: The influence of symmetries and the choice of observables

C Letellier, LA Aguirre - Chaos: An Interdisciplinary Journal of …, 2002 - pubs.aip.org
A great number of techniques developed for studying nonlinear dynamical systems start with
the embedding of a scalar time series, lying on an m-dimensional object, in an embedding …

Templex: A bridge between homologies and templates for chaotic attractors

GD Charó, C Letellier, D Sciamarella - Chaos: An Interdisciplinary …, 2022 - pubs.aip.org
The theory of homologies introduces cell complexes to provide an algebraic description of
spaces up to topological equivalence. Attractors in state space can be studied using …

Phase coherence and attractor geometry of chaotic electrochemical oscillators

Y Zou, RV Donner, M Wickramasinghe… - … Journal of Nonlinear …, 2012 - pubs.aip.org
Chaotic attractors are known to often exhibit not only complex dynamics but also a complex
geometry in phase space. In this work, we provide a detailed characterization of chaotic …

Optimal placement of sensor and actuator for controlling low-dimensional chaotic systems based on global modeling

C Letellier, S Mangiarotti, L Minati, M Frasca… - … Journal of Nonlinear …, 2023 - pubs.aip.org
Controlling chaos is fundamental in many applications, and for this reason, many techniques
have been proposed to address this problem. Here, we propose a strategy based on an …

A generic method for constructing n-fold covers of 3D conservative chaotic systems

S Cang, Y Li, Z Kang, Z Wang - Chaos: An Interdisciplinary Journal of …, 2020 - pubs.aip.org
This paper reports a generic method for constructing n-fold covers of 3D conservative
chaotic systems, which is derived from the theory of the generalized Hamiltonian system …

Evidence for low dimensional chaos in sunspot cycles

C Letellier, LA Aguirre, J Maquet, R Gilmore - Astronomy & Astrophysics, 2006 - aanda.org
Sunspot cycles are widely used for investigating solar activity. In 1953 Bracewell argued that
it is sometimes desirable to introduce the inversion of the magnetic field polarity, and that …

A symbolic network-based nonlinear theory for dynamical systems observability

C Letellier, I Sendiña-Nadal, E Bianco-Martinez… - Scientific reports, 2018 - nature.com
When the state of the whole reaction network can be inferred by just measuring the
dynamics of a limited set of nodes the system is said to be fully observable. However, as the …