Results 21 to 30 of about 783,150 (225)

Weak pullback attractors of setvalued processes

open access: yesJournal of Mathematical Analysis and Applications, 2003
Weak pullback attractors are de ned for nonautonomous setvalued processes and their existence and upper semi continuous convergence under perturbation is established. Unlike strong pullback attractors, invariance and pullback attraction here are required only for at least one trajectory rather than all trajectories at each starting point.
Caraballo Garrido, Tomás   +2 more
openaire   +4 more sources

H^2-boundedness of the pullback attractors for non-autonomous 2D Navier-Stokes equations in bounded domains [PDF]

open access: yes, 2011
We prove some regularity results for the pullback attractors of a non-autonomous 2D Navier–Stokes model in a bounded domain Ω of R2. We establish a general result about (H2(Ω))2∩V-boundedness of invariant sets for the associate evolution process.
García Luengo, Julia María   +2 more
core   +1 more source

Numerical dynamics of integrodifference equations: Forward dynamics and pullback attractors [PDF]

open access: yesJournal of Computational Dynamics, 2022
In order to determine the dynamics of nonautonomous equations both their forward and pullback behavior need to be understood. For this reason we provide sufficient criteria for the existence of such attracting invariant sets in a general setting of ...
H. Huynh, P. Kloeden, Christian Potzsche
semanticscholar   +1 more source

Entropy increase in switching systems [PDF]

open access: yes, 2013
The relation between the complexity of a time-switched dynamics and the complexity of its control sequence depends critically on the concept of a non-autonomous pullback attractor.
Amigó   +9 more
core   +2 more sources

Pullback attractors for weak solution to modified Kelvin-Voigt model

open access: yesEvolution Equations & Control Theory, 2022
The paper is devoted to the investigation of the qualitative dynamics of weak solutions for the modified Kelvin-Voigt model on the base of the theory of pullback attractors for trajectory spaces.
M. Turbin, A. Ustiuzhaninova
semanticscholar   +1 more source

Continuity of pullback and uniform attractors [PDF]

open access: yesJournal of Differential Equations, 2018
We study the continuity of pullback and uniform attractors for non-autonomous dynamical systems with respect to perturbations of a parameter. Consider a family of dynamical systems parameterised by a complete metric space $ $ such that for each $ \in $ there exists a unique pullback attractor $\mathcal A_ (t)$. Using the theory of Baire category we
Luan T. Hoang   +2 more
openaire   +3 more sources

Pullback attractors for generalized evolutionary systems

open access: yesDiscrete & Continuous Dynamical Systems - B, 2015
We give an abstract framework for studying nonautonomous PDEs, called a generalized evolutionary system. In this setting, we define the notion of a pullback attractor. Moreover, we show that the pullback attractor, in the weak sense, must always exist. We then study the structure of these attractors and the existence of a strong pullback attractor.
Kavlie, Landon, Cheskidov, Alexey
openaire   +3 more sources

Pullback Attractors for Stochastic Young Differential Delay Equations [PDF]

open access: yesJournal of Dynamics and Differential Equations, 2020
We study the asymptotic dynamics of stochastic Young differential delay equations under the regular assumptions on Lipschitz continuity of the coefficient functions. Our main results show that, if there is a linear part in the drift term which has no delay factor and has eigenvalues of negative real parts, then the generated random dynamical system ...
Cong, N., Luu, H., Hong, P.
openaire   +3 more sources

Regularity Results and Exponential Growth for Pullback Attractors of a Non-Autonomous Reaction-Diffusion Model with Dynamical Boundary Conditions [PDF]

open access: yes, 2014
In this paper, we prove some regularity results for pullback attractors of a non-autonomous reaction–diffusion model with dynamical boundary conditions considered in Anguiano (2011).
Anguiano Moreno, María   +2 more
core   +1 more source

Strong pullback attractors for a nonclassical diffusion equation

open access: yesDiscrete & Continuous Dynamical Systems - B, 2022
In this paper, we investigate the existence of pullback attractors for a nonclassical diffusion equation with Dirichlet boundary condition in \begin{document}$ H^2(\Omega)\cap H^1_0(\Omega) $\end{document}. First, we prove the existence and uniqueness of
Xiaolei Dong, Yuming Qin
semanticscholar   +1 more source

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