Results 21 to 30 of about 27,202 (290)

Attractors for damped semilinear wave equations with singularly perturbed acoustic boundary conditions

open access: yesElectronic Journal of Differential Equations, 2018
Under consideration is the damped semilinear wave equation $$ u_{tt}+u_t-\Delta u+u+f(u)=0 $$ in a bounded domain $\Omega$ in $\mathbb{R}^3$ subject to an acoustic boundary condition with a singular perturbation, which we term "massless acoustic ...
Joseph L. Shomberg
doaj   +2 more sources

Chevron Pattern Equations: Exponential Attractor and Global Stabilization [PDF]

open access: yesVietnam Journal of Mathematics, 2021
The initial boundary value problem for a nonlinear system of equations modeling the chevron patterns is studied in one and two spatial dimensions. The existence of an exponential attractor and the stabilization of the zero steady state solution through application of a finite-dimensional feedback control is proved in two spatial dimensions.
Habiba Kalantarova   +2 more
openaire   +4 more sources

Systemic modeling of chaotic EEG during human sleep

open access: yesInformatics in Medicine Unlocked, 2023
The use of chaos theory in modeling biological signals is becoming increasingly common, especially in EEG signal processing for predicting and detecting different brain states.
Mahmoud Alipour   +1 more
doaj   +1 more source

EXPONENTIAL ATTRACTOR FOR HINDMARSH-ROSE EQUATIONS IN NEURODYNAMICS

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.
Phan, Chi, You, Yuncheng
openaire   +2 more sources

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

open access: yes, 2017
In this article we deal with a class of strongly coupled parabolic systems that encompasses two different effects: degenerate diffusion and chemotaxis.
A. Eden   +30 more
core   +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   +1 more source

Pullback exponential attractors

open access: yesDiscrete & Continuous Dynamical Systems - A, 2010
In this work, we show how to construct a pullback exponential attractor associated with an infinite dimensional dynamical system, i.e., a family of time dependent compact sets, with finite fractal dimension, which are positively invariant and exponentially attract in the pullback sense every bounded set of the phase space.
José A. Langa   +2 more
openaire   +1 more source

Coexistence of exponentially many chaotic spin-glass attractors [PDF]

open access: yesPhysical Review E, 2011
A chaotic network of size $N$ with delayed interactions which resembles a pseudo-inverse associative memory neural network is investigated. For a load $ =P/N<1$, where $P$ stands for the number of stored patterns, the chaotic network functions as an associative memory of 2P attractors with macroscopic basin of attractions which decrease with ...
Peleg, Y.   +3 more
openaire   +3 more sources

Exponential attractors for random dynamical systems and applications [PDF]

open access: yes, 2012
The paper is devoted to constructing a random exponential attractor for some classes of stochastic PDE's. We first prove the existence of an exponential attractor for abstract random dynamical systems and study its dependence on a parameter and then ...
Shirikyan, Armen, Zelik, Sergey
core   +4 more sources

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