Results 11 to 20 of about 1,323,147 (330)

On an exponential attractor for a class of PDEs with degenerate diffusion and chemotaxis [PDF]

open access: yesDiscrete & Continuous Dynamical Systems - A, 2018
In this article we deal with a class of strongly coupled parabolic systems that encompasses two different effects: degenerate diffusion and chemotaxis. Such classes of equations arise in the mesoscale level modeling of biomass spreading mechanisms via chemotaxis.
Efendiev, Messoud, Zhigun, Anna
core   +10 more sources

A necessary and sufficient condition for the existence of an exponential attractor

open access: yesOpen Mathematics, 2003
Abstract We give a necessary and sufficient condition for the existence of an exponential attractor. The condition is formulated in the context of metric spaces. It also captures the quantitative properties of the attractor, i.e., the dimension and the rate of attraction.
Pražák Dalibor
doaj   +5 more sources

Spread trend of COVID-19 epidemic outbreak in China: using exponential attractor method in a spatial heterogeneous SEIQR model

open access: yesMathematical Biosciences and Engineering, 2020
In this paper we introduce a method of global exponential attractor in the reaction-diffusion epidemic model in spatial heterogeneous environment to study the spread trend and long-term dynamic behavior of the COVID-19 epidemic.
Cheng-Cheng Zhu, Jiang Zhu
doaj   +2 more sources

Global attractor and exponential attractor for a Parabolic system of Cahn-Hilliard with a proliferation term

open access: yesAIMS Mathematics, 2020
In this article, we are interested in the study of Parabolic system of Cahn-Hilliard with a proliferation term and Dirichet boundary conditions. In particular, we prove the existence and the uniqueness of the solution, the existence of the global ...
Aymard Christbert Nimi, Daniel Moukoko
doaj   +2 more sources

Random exponential attractor for second order non-autonomous stochastic lattice dynamical systems with multiplicative white noise in weighted spaces

open access: yesAdvances in Difference Equations, 2019
This paper is concerned with the random exponential attractor for second order non-autonomous stochastic lattice system with multiplicative white noise and unbounded nonlinearity.
Haijuan Su, Shengfan Zhou, Luyao Wu
doaj   +2 more sources

Random uniform exponential attractor for stochastic non-autonomous reaction-diffusion equation with multiplicative noise in ℝ3

open access: yesOpen Mathematics, 2019
We first introduce the concept of the random uniform exponential attractor for a jointly continuous non-autonomous random dynamical system (NRDS) and give a theorem on the existence of the random uniform exponential attractor for a jointly continuous ...
Han Zongfei, Zhou Shengfan
doaj   +2 more sources

EXPONENTIAL ATTRACTOR FOR HINDMARSH-ROSE EQUATIONS IN NEURODYNAMICS [PDF]

open access: yesJournal of Applied Analysis & Computation, 2020
The existence of an exponential attractor for the diffusive Hindmarsh-Rose equations on a three-dimensional bounded domain originated in the study of neurodynamics is proved through uniform estimates together with a new theorem on the squeezing property of an abstract reaction-diffusion equation also proved in this paper.
Chi Phan, Yuncheng You
openaire   +4 more sources

Open sets of Axiom A flows with exponentially mixing attractors [PDF]

open access: yesProceedings of the American Mathematical Society, 2016
For any dimension d ≥ 3 d\geq 3 we construct C 1 \mathcal {C}^{1} -open subsets of the space of C 3 \mathcal {C}^{3} vector fields such that the flow associated to each vector ...
Paulo Varandas   +3 more
openaire   +6 more sources

Exponential Attractor for the Boussinesq Equation with Strong Damping and Clamped Boundary Condition

open access: yesDiscrete Dynamics in Nature and Society, 2016
The paper studies the existence of exponential attractor for the Boussinesq equation with strong damping and clamped boundary condition utt-Δu+Δ2u-Δut-Δg(u)=f(x). The main result is concerned with nonlinearities g(u) with supercritical growth.
Fan Geng   +3 more
doaj   +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   +2 more sources

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