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A family of periodic perturbations of an attracting robust heteroclinic cycle defined on the two-sphere is studied by reducing the analysis to that of a one-parameter family of maps on a circle. The set of zeros of the family forms a…

Dynamical Systems · Mathematics 2025-01-03 Isabel S. Labouriau , Alexandre A. P Rodrigues

In this paper, we explore the three-dimensional chaotic set near a homoclinic cycle to a hyperbolic bifocus at which the vector field has negative divergence. If the invariant manifolds of the bifocus satisfy a non-degeneracy condition, a…

Dynamical Systems · Mathematics 2019-10-22 Alexandre A. P. Rodrigues

We present a dynamical system that naturally exhibits two unstable attractors that are completely enclosed by each others basin volume. This counter-intuitive phenomenon occurs in networks of pulse-coupled oscillators with delayed…

Chaotic Dynamics · Physics 2008-12-09 Christoph Kirst , Marc Timme

We study dynamics and bifurcations of two-dimensional reversible maps having non-transversal heteroclinic cycles containing symmetric saddle periodic points. We consider one-parameter families of reversible maps unfolding generally the…

Dynamical Systems · Mathematics 2015-06-03 A. Delshams , S. V. Gonchenko , V. S. Gonchenko , J. T. Lázaro , O. Sten'kin

We study a system of coupled phase oscillators near a saddle-node on an invariant circle bifurcation and driven by random intrinsic frequencies. Under the variation of control parameters, the system undergoes a phase transition changing the…

Adaptation and Self-Organizing Systems · Physics 2022-08-18 Georgi S. Medvedev , Matthew S. Mizuhara , Andrew Phillips

This article studies routes to chaos occurring within a resonance wedge for a 3-parametric family of differential equations acting on a 3-sphere. Our starting point is an autonomous vector field whose flow exhibits a weakly attracting…

Dynamical Systems · Mathematics 2021-09-01 Alexandre A. P. Rodrigues

We study bifurcation behavior in periodic perturbations of two-dimensional symmetric systems exhibiting codimension-two bifurcations with a double eigenvalue when the frequencies of the perturbation terms are small. We transform the…

Dynamical Systems · Mathematics 2023-02-15 Kazuyuki Yagasaki

We study the dynamics of the Forced Logistic Map in the cylinder. We compute a bifurcation diagram in terms of the dynamics of the attracting set. Different properties of the attracting set are considered, as the Lyapunov exponent and, in…

Dynamical Systems · Mathematics 2011-12-20 Angel Jorba , Pau Rabassa , Joan Carles Tatjer

We study dynamics and bifurcations of 2-dimensional reversible maps having a symmetric saddle fixed point with an asymmetric pair of nontransversal homoclinic orbits (a symmetric nontransversal homoclinic figure-8). We consider…

Dynamical Systems · Mathematics 2017-11-27 A. Delshams , M. S. Gonchenko , S. V. Gonchenko , J. T Lázaro

The attractors of a dynamical system govern its typical long-term behaviour. The presence of many attractors is significant as it means the behaviour is heavily dependent on the initial conditions. To understand how large numbers of…

Dynamical Systems · Mathematics 2022-06-20 Sishu Shankar Muni

We present a mechanism for the emergence of strange attractors (observable chaos) in a two-parameter periodically-perturbed family of differential equations on the plane. The two parameters are independent and act on different ways in the…

Dynamical Systems · Mathematics 2022-01-05 Alexandre A. P. Rodrigues

We present a comprehensive mechanism for the emergence of rotational horseshoes and strange attractors in a class of two-parameter families of periodically-perturbed differential equations defining a flow on a three-dimensional manifold.…

Dynamical Systems · Mathematics 2021-07-27 Isabel S. Labouriau , Alexandre A. P. Rodrigues

In this paper we consider an attracting heteroclinic cycle made by a 1-dimensional and a 2-dimensional separatrices between two hyperbolic saddles having complex eigenvalues. The basin of the global attractor exhibits historic behaviour…

Dynamical Systems · Mathematics 2018-07-04 Maria Carvalho , Alexandre A. P. Rodrigues

Lorenz attractors play an important role in the modern theory of dynamical systems. The reason is that they are robust, i.e. preserve their chaotic properties under various kinds of perturbations. This means that such attractors can exist…

Dynamical Systems · Mathematics 2021-04-06 Ivan Ovsyannikov

We analyse three codimension-two bifurcations occurring in nonsmooth systems, when a non-hyperbolic cycle (fold, flip, and Neimark-Sacker cases, both in continuous- and discrete-time) interacts with one of the discontinuity boundaries…

Dynamical Systems · Mathematics 2010-07-09 Alessandro Colombo , Fabio Dercole

We consider the dynamics of small perturbations of stable two-frequency quasiperiodic orbits on an attracting torus in the quasiperiodically forced Henon map. Such dynamics consists in an exponential decay of the radial component and in a…

Chaotic Dynamics · Physics 2007-05-23 Alexey Yu. Jalnine , Sergey P. Kuznetsov , Andrew H. Osbaldestin

We derive the bifurcation set for a not previously considered three-parametric Bogdanov-Takens unfolding, showing that it is possible express its vector field as two different perturbed cubic Hamiltonians. By using several first-order…

Dynamical Systems · Mathematics 2018-11-13 Andrés Amador , Emilio Freire , Enrique Ponce

In this paper we present a mechanism for the emergence of strange attractors in a one-parameter family of differential equations acting on a 3-dimensional sphere. When the parameter is zero, its flow exhibits an attracting heteroclinic…

Dynamical Systems · Mathematics 2021-11-05 Alexandre A. P. Rodrigues

Detect the birth of limit cycles in non-smooth vector fields is a very important matter into the recent theory of dynamical systems and applied sciences. The goal of this paper is to study the bifurcation of limit cycles from a continuum of…

Dynamical Systems · Mathematics 2021-01-29 Claudio A. Buzzi , Rodrigo D. Euzebio , Ana C. Mereu

We consider $C^2$ vector fields in the three dimensional sphere with an attracting heteroclinic cycle between two periodic hyperbolic solutions with real Floquet multipliers. The proper basin of this attracting set exhibits historic…

Dynamical Systems · Mathematics 2019-06-28 Maria Carvalho , Alexander Lohse , Alexandre Rodrigues
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