Results 31 to 40 of about 2,525 (234)

Pullback attraction in H 0 1 $H_{0}^{1}$ for semilinear heat equation in expanding domains

open access: yesBoundary Value Problems, 2020
In this article, we consider the pullback attraction in H 0 1 $H_{0}^{1}$ of pullback attractor for semilinear heat equation with domains expanding in time. Firstly, we establish higher-order integrability of difference about variational solutions; then,
Yanping Xiao, Yuqin Bai, Huanhuan Zhang
doaj   +1 more source

Parameter shifts for nonautonomous systems in low dimension: Bifurcation- and Rate-induced tipping [PDF]

open access: yes, 2016
We discuss the nonlinear phenomena of irreversible tipping for non-autonomous systems where time-varying inputs correspond to a smooth "parameter shift" from one asymptotic value to another.
Ashwin, Peter   +2 more
core   +2 more sources

Pullback Exponential Attractor for Second Order Nonautonomous Lattice System

open access: yesDiscrete Dynamics in Nature and Society, 2014
We first present some sufficient conditions for the existence of a pullback exponential attractor for continuous process on the product space of the weighted spaces of infinite sequences.
Shengfan Zhou, Hong Chen, Zhaojuan Wang
doaj   +1 more source

Pullback attractor for a non-linear evolution equation in elasticity [PDF]

open access: yes, 2014
We prove the existence of a pullback attractor for a non{autonomous fourth order evolution equation arising in the fi eld of phase transitions and elasticity theory.
Caraballo Garrido, Tomás   +1 more
core   +1 more source

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

On attractors, spectra and bifurcations of random dynamical systems [PDF]

open access: yes, 2015
In this thesis a number of related topics in random dynamical systems theory are studied: local attractors and attractor-repeller pairs, the exponential dichotomy spectrum and bifurcation theory.
Callaway, Mark
core   +1 more source

Pullback Attractor for Nonautonomous Primitive Equations of Large-Scale Ocean and Atmosphere Dynamics

open access: yesAbstract and Applied Analysis, 2013
We consider the existence of -pullback attractor for nonautonomous primitive equations of large-scale ocean and atmosphere dynamics in a three-dimensional bounded cylindrical domain by verifying pullback condition.
Kun Li, Fang Li
doaj   +1 more source

Pullback attractor of Hopfield neural networks with multiple time-varying delays

open access: yesAIMS Mathematics, 2021
This paper deals with the attractor problem of Hopfield neural networks with multiple time-varying delays. The mathematical expression of the networks cannot be expressed in the vector-matrix form due to the existence of the multiple delays, which leads ...
Qinghua Zhou   +3 more
doaj   +1 more source

Time-Dependent Attractor for the Oscillon Equation [PDF]

open access: yes, 2010
We investigate the asymptotic behavior of the nonautonomous evolution problem generated by the Klein-Gordon equation in an expanding background, in one space dimension with periodic boundary conditions, with a nonlinear potential of arbitrary polynomial ...
Di Plinio, Francesco   +2 more
core   +1 more source

Backwards Asymptotically Autonomous Dynamics for 2D MHD Equations

open access: yesDiscrete Dynamics in Nature and Society, 2018
We consider the backwards topological property of pullback attractors for the nonautonomous MHD equations. Under some backwards assumptions of the nonautonomous force, it is shown that the theoretical existence result for such an attractor is derived ...
Jiali Yu, Wenhuo Su, Dongmei Xu
doaj   +1 more source

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