Some open problems in dynamical systems.
Herman, Michael (1998)
Documenta Mathematica
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Herman, Michael (1998)
Documenta Mathematica
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Albert Milani (1992)
Banach Center Publications
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Coke S. Reed (1973)
Colloquium Mathematicae
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Alain Miranville (2003)
Applications of Mathematics
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In this article we introduce the notion of a minimal attractor for families of operators that do not necessarily form semigroups. We then obtain some results on the existence of the minimal attractor. We also consider the nonautonomous case. As an application, we obtain the existence of the minimal attractor for models of Cahn-Hilliard equations in deformable elastic continua.
Anishchenko, Vadim S., Strelkova, Galina I. (1998)
Discrete Dynamics in Nature and Society
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Ge Zhang, Chunni Wang, Ahmed Alsaedi, Jun Ma, Guodong Ren (2018)
Kybernetika
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Non-linearity is essential for occurrence of chaos in dynamical system. The size of phase space and formation of attractors are much dependent on the setting of nonlinear function and parameters. In this paper, a three-variable dynamical system is controlled by different nonlinear function thus a class of chaotic system is presented, the Hamilton function is calculated to find the statistical dynamical property of the improved dynamical systems composed of hidden attractors. The standard...
Anishchenko, Vadim S., Vadivasova, Tatjana E., Strelkova, Galina I., Kopeikin, Andrey S. (1998)
Discrete Dynamics in Nature and Society
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Lluís Alsedà, Sara Costa (2009)
Fundamenta Mathematicae
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The aim of this paper is twofold. On the one hand, we want to discuss some methodological issues related to the notion of strange nonchaotic attractor. On the other hand, we want to formulate a precise definition of this kind of attractor, which is "observable" in the physical sense and, in the two-dimensional setting, includes the well known models proposed by Grebogi et al. and by Keller, and a wide range of other examples proposed in the literature. Furthermore, we analytically prove...
Rogério Martins, Gonçalo Morais (2015)
Kybernetika
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An abstract theory on general synchronization of a system of several oscillators coupled by a medium is given. By generalized synchronization we mean the existence of an invariant manifold that allows a reduction in dimension. The case of a concrete system modeling the dynamics of a chemical solution on two containers connected to a third container is studied from the basics to arbitrary perturbations. Conditions under which synchronization occurs are given. Our theoretical results are...
Dalibor Pražák (2006)
Open Mathematics
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We consider a system of ordinary differential equations with infinite delay. We study large time dynamics in the phase space of functions with an exponentially decaying weight. The existence of an exponential attractor is proved under the abstract assumption that the right-hand side is Lipschitz continuous. The dimension of the attractor is explicitly estimated.
Ou, Baiyu, Liu, Desheng (2010)
Mathematical Problems in Engineering
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Ou, Baiyu, Liu, Desheng (2010)
Discrete Dynamics in Nature and Society
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Rocco Duvenhage (2012)
Studia Mathematica
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Relatively independent joinings of W*-dynamical systems are constructed. This is intimately related to subsystems of W*-dynamical systems, and therefore we also study general properties of subsystems, in particular fixed point subsystems and compact subsystems. This allows us to obtain characterizations of weak mixing and relative ergodicity, as well as of certain compact subsystems, in terms of joinings.