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Entropy Increase in Switching Systems [PDF]

open access: yesEntropy, 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.
Ángel Giménez   +2 more
doaj   +3 more sources

Pullback attractor for a nonautonomous parabolic Cahn-Hilliard phase-field system

open access: goldAIMS Mathematics, 2023
Our aim in this paper is to study generalizations of the Caginalp phase-field system based on a thermomechanical theory involving two temperatures and a nonlinear coupling. In particular, we prove well-posedness results.
Jean De Dieu Mangoubi   +2 more
doaj   +2 more sources

The Existence of Weak D-Pullback Exponential Attractor for Nonautonomous Dynamical System [PDF]

open access: yesThe Scientific World Journal, 2016
First, for a process U(t,τ)∣t≥τ, we introduce a new concept, called the weak D-pullback exponential attractor, which is a family of sets M(t)∣t≤T, for any T∈R, satisfying the following: (i) M(t) is compact, (ii) M(t) is positively invariant, that is, U(t,
Yongjun Li, Xiaona Wei, Yanhong Zhang
doaj   +2 more sources

Pullback 𝒟-Attractor of Nonautonomous Three-Component Reversible Gray-Scott System on Unbounded Domains [PDF]

open access: goldAbstract and Applied Analysis, 2013
The long time behavior of solutions of the nonautonomous three-components reversible Gray-Scott system defined on the entire space ℝn is studied when the external forcing terms are unbounded in a phase space.
Anhui Gu
doaj   +2 more sources

Pullback attractors for the non-autonomous complex Ginzburg–Landau type equation with p-Laplacian

open access: diamondNonlinear Analysis, 2015
In this paper, we are concerned with the long-time behavior of the non-autonomous complex Ginzburg–Landau type equation with p-Laplacian. We first prove the existence of pullback absorbing sets in L2(Ω)∩W01,p(Ω)∩Lq(Ω) for the process {U(t,τ)}t⩾τ ...
Fang Li, Bo You
doaj   +3 more sources

Pullback attractor for a nonlocal discrete nonlinear Schrödinger equation with delays

open access: diamondElectronic Journal of Qualitative Theory of Differential Equations, 2021
We consider a nonlocal discrete nonlinear Schrödinger equation with delays. We prove that the process associated with the non-autonomous model possesses a pullback attractor.
Jardel Pereira
doaj   +2 more sources

Upper Semicontinuity of Pullback Attractors for the 3D Nonautonomous Benjamin-Bona-Mahony Equations [PDF]

open access: yesThe Scientific World Journal, 2014
We will study the upper semicontinuity of pullback attractors for the 3D nonautonomouss Benjamin-Bona-Mahony equations with external force perturbation terms. Under some regular assumptions, we can prove the pullback attractors 𝒜ε(t) of equation ut-Δut-
Xinguang Yang   +3 more
doaj   +2 more sources

Pullback Attractor for a Non-Autonomous Generalized Cahn-Hilliard Equation with Biological Applications

open access: diamondMathematical Modelling and Analysis, 2016
In this paper, we consider a non-autonomous generalized Cahn-Hilliard equation with biological applications. It is shown that a pullback attractor of the equation exists when the external force has exponential growth.
Ning Duan
doaj   +3 more sources

Pullback attractor of a non-autonomous order-2γ parabolic equation for an epitaxial thin film growth model [PDF]

open access: goldBoundary Value Problems, 2020
The non-autonomous order-2γ parabolic partial differential equation for an epitaxial thin film growth model with dimension d = 3 $d=3$ is investigated by the method of uniform estimates.
Xiaojie Yang, Hui Liu, Chengfeng Sun
doaj   +2 more sources

H 2 $H^{2}$ -boundedness of the pullback attractor of the micropolar fluid flows with infinite delays

open access: goldBoundary Value Problems, 2017
We establish the H 2 $H^{2}$ -boundedness of the pullback attractor for a two-dimensional nonautonomous micropolar fluid flow with infinite delays.
Gang Zhou, Guowei Liu, Wenlong Sun
doaj   +2 more sources

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