Results 31 to 40 of about 2,218 (199)

Robustness of nonautonomous attractors for a family of nonlocal reaction–diffusion equations without uniqueness [PDF]

open access: yes, 2015
In this paper, we consider a non-autonomous nonlocal reactiondiffusion equation with a small perturbation in the nonlocal diffusion term and the non-autonomous force.
Caraballo Garrido, Tomás   +2 more
core   +1 more source

Robustness of time-dependent attractors in H1-norm for nonlocal problems [PDF]

open access: yes, 2018
In this paper, the existence of regular pullback attractors as well as their upper semicontinuous behaviour in H1-norm are analysed for a parameterized family of non-autonomous nonlocal reaction-diffusion equations without uniqueness, improving previous ...
Caraballo Garrido, Tomás   +2 more
core   +1 more source

Dynamics of wave equations with moving boundary [PDF]

open access: yes, 2017
This paper is concerned with long-time dynamics of weakly damped semilinear wave equations defined on domains with moving boundary. Since the boundary is a function of the time variable the problem is intrinsically non-autonomous.
Ma, To Fu   +2 more
core   +1 more source

Attractors for processes on time-dependent spaces. Applications to wave equations [PDF]

open access: yes, 2012
For a process U(t,s) acting on a one-parameter family of normed spaces, we present a notion of time-dependent attractor based only on the minimality with respect to the pullback attraction property. Such an attractor is shown to be invariant whenever the
Conti, Monica   +2 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

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

Criteria for strong and weak random attractors

open access: yes, 2008
The theory of random attractors has different notions of attraction, amongst them pullback attraction and weak attraction. We investigate necessary and sufficient conditions for the existence of pullback attractors as well as of weak ...
B. Schmalfuß   +19 more
core   +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

Weak topologies for Carath\'eodory differential equations. Continuous dependence, exponential Dichotomy and attractors [PDF]

open access: yes, 2018
We introduce new weak topologies and spaces of Carath\'eodory functions where the solutions of the ordinary differential equations depend continuously on the initial data and vector fields.
Longo, Iacopo P.   +2 more
core   +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

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