Results 31 to 40 of about 56,089 (229)

Pullback-Forward Dynamics for Damped Schrödinger Equations with Time-Dependent Forcing

open access: yesDiscrete Dynamics in Nature and Society, 2018
This paper deals with pullback dynamics for the weakly damped Schrödinger equation with time-dependent forcing. An increasing, bounded, and pullback absorbing set is obtained if the forcing and its time-derivative are backward uniformly integrable. Also,
Lianbing She, Yangrong Li, Renhai Wang
doaj   +1 more source

Dynamics of Non-Autonomous Stochastic Semi-Linear Degenerate Parabolic Equations with Nonlinear Noise

open access: yesMathematics, 2023
In the present paper, we aim to study the long-time behavior of a stochastic semi-linear degenerate parabolic equation on a bounded or unbounded domain and driven by a nonlinear noise.
Xin Liu, Yanjiao Li
doaj   +1 more source

A non-autonomous scalar one-dimensional dissipative parabolic problem: The description of the dynamics [PDF]

open access: yes, 2018
The purpose of this paper is to give a characterization of the structure of non-autonomous attractors of the problem $u_t= u_{xx} + \lambda u - \beta(t)u^3$ when the parameter $\lambda > 0$ varies.
Broche, Rita de Cássia D. S.   +2 more
core   +2 more sources

Pullback D-Attractor of Coupled Rod Equations with Nonlinear Moving Heat Source

open access: yesJournal of Applied Mathematics, 2014
We consider the pullback D-attractor for the nonautonomous nonlinear equations of thermoelastic coupled rod with a nonlinear moving heat source. By Galerkin method, the existence and uniqueness of global solutions are proved under homogeneous boundary ...
Danxia Wang, Jianwen Zhang, Yinzhu Wang
doaj   +1 more source

Pullback attractors for non-autonomous 2D-Navier-Stokes equations in some unbounded domains [PDF]

open access: yes, 2006
In this Note we first introduce the concept of pullback asymptotic compactness. Next, we establish a result ensuring the existence of a pullback attractor for a non-autonomous dynamical system under the general assumptions of pullback asymptotic ...
Caraballo Garrido, Tomás   +2 more
core   +3 more sources

Pullbacks of Banach Bundles

open access: yesRocky Mountain Journal of Mathematics, 1992
Le résultat principal peut s'énoncer ainsi: \(S\) et \(T\) sont deux espaces compacts, \(\alpha: S\to T\) une application continue, \(\varphi: F\to T\) un fibré de Banach, \(\pi: E\to S\) son obstruction par \(\alpha\), \(K\) l'enveloppe linéaire fermée dans \(C(S)\widehat{\widehat\otimes} \Gamma(\rho)\) de l'ensemble des éléments de la forme \((g\cdot
Kitchen, J.W., Robbins, D.A.
openaire   +2 more sources

Validation of Coronary Angiography-Derived Vessel Fractional Flow Reserve in Heart Transplant Patients with Suspected Graft Vasculopathy

open access: yesDiagnostics, 2021
Cardiac transplant-related vasculopathy remains a leading cause of morbidity and mortality in heart transplant (HTx) recipients. Recently, coronary angiography-derived vessel fractional flow reserve (vFFR) has emerged as a new diagnostic computational ...
Niya Mileva   +13 more
doaj   +1 more source

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   +2 more sources

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

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

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