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We study the asymptotic behavior of solutions of discrete nonlinear Schr\"odinger-type (DNLS) equations. For a conservative system, we consider the global in time solvability and the question of existence of standing wave solutions.…

Classical Analysis and ODEs · Mathematics 2007-05-23 Nikos I. Karachalios , Athanasios N. Yannacopoulos

The long-time asymptotics is analyzed for all finite energy solutions to a model U(1)-invariant nonlinear Klein-Gordon equation in one dimension, with the nonlinearity concentrated at a single point: each finite energy solution converges as…

Analysis of PDEs · Mathematics 2009-11-11 Alexander Komech , Andrew Komech

This paper is concerned with the long-time behavior of solutions for the three dimensional globally modified Navier-Stokes equations in a three-dimensional bounded domain. We prove the existence of a global attractor $\mathcal{A}_0$ in $H$…

Dynamical Systems · Mathematics 2017-03-17 Fang Li , Bo You

An N-dimensional generalization of Nicholson's equation is analyzed. We consider a model including multiple delays, nonlinear coefficients and a nonlinear harvesting term. Inspired by previous results in this subject, we obtain sufficient…

Classical Analysis and ODEs · Mathematics 2021-12-13 Pablo Amster , Melanie Bondorevsky

We consider a system of several nonlinear equations with a distributed delay and obtain absolute asymptotic stability conditions, independent of the delay. The ideas of the proofs are based on the notion of a strong attractor. The results…

Dynamical Systems · Mathematics 2021-05-26 Leonid Berezansky , Elena Braverman

We study the global existence and uniform-in-time bounds of classical solutions in all dimensions to reaction-diffusion systems dissipating mass. By utilizing the duality method and the regularization of the heat operator, we show that if…

Analysis of PDEs · Mathematics 2019-05-28 Brian P. Cupps , Jeff Morgan , Bao Quoc Tang

In this paper we address the analytical investigation of a model for adhesive contact, which includes nonlocal sources of damage on the contact surface, such as the elongation. The resulting PDE system features various nonlinearities…

Analysis of PDEs · Mathematics 2017-04-04 Elena Bonetti , Giovanna Bonfanti , Riccarda Rossi

The Penrose-Fife system for phase transitions is addressed. Dirichlet boundary conditions for the temperature are assumed. Existence of global and exponential attractors is proved. Differently from preceding contributions, here the energy…

Analysis of PDEs · Mathematics 2008-01-18 Giulio Schimperna

This paper is concerned with a strongly degenerate convection-diffusion equation in one space dimension whose convective flux involves a non-linear function of the total mass to one side of the given position. This equation can be…

Numerical Analysis · Mathematics 2010-07-12 Fernando Betancourt , Raimund Bürger , Kenneth H. Karlsen

We analyze a phase-field system where the energy balance equation is linearly coupled with a nonlinear and nonlocal ODE for the order parameter $\chi$. The latter equation is characterized by a space convolution term which models particle…

Dynamical Systems · Mathematics 2011-08-02 Maurizio Grasselli

We analyze a reaction-diffusion system describing the growth of microbial species in a model of flocculation type that arises in biology. Existence of global classical positive solutions is proved under general growth assumptions, with…

Analysis of PDEs · Mathematics 2023-01-19 Jeffrey Morgan , Samia Zermani

Global dynamics of nonautonomous diffusive Hindmarsh-Rose equations on a three-dimensional bounded domain in neurodynamics is investigated. The existence of a pullback attractor is proved through uniform estimates showing the pullback…

Analysis of PDEs · Mathematics 2019-09-10 Chi Phan , Yuncheng You

The long-time asymptotics is analyzed for all finite energy solutions to a model $\mathbf{U}(1)$-invariant nonlinear Dirac equation in one dimension, coupled to a nonlinear oscillator: {\it each finite energy solution} converges as…

Mathematical Physics · Physics 2019-05-22 Elena Kopylova , Alexander Komech

We consider the question of global existence of smooth solutions to a multi-species aggregation-diffusion equation for a class of singular interaction kernels. We establish a smallness condition on the initial data which yields global…

Analysis of PDEs · Mathematics 2025-03-25 Elaine Cozzi , Zachary Radke

In this paper dynamic von Karman equations with localized interior damping supported in a boundary collar are considered. Hadamard well-posedness for von Karman plates with various types of nonlinear damping are well-known, and the…

Analysis of PDEs · Mathematics 2012-01-31 Pelin G. Geredeli , Irena Lasiecka , Justin T. Webster

This paper is devoted to the quantitative study of the attractive velocity of generalized attractors for infinite-dimensional dynamical systems. We introduce the notion of~$\varphi$-attractor whose attractive speed is characterized by a…

Dynamical Systems · Mathematics 2022-05-09 Chunyan Zhao , Chengkui Zhong , Xiangming Zhu

We study the long time behaviour of solutions for the weakly damped forced Kawahara equation on the torus. More precisely, we prove the existence of a global attractor in $L^2$, to which as time passes all solutions draw closer. In fact, we…

Analysis of PDEs · Mathematics 2024-12-03 Jaeseop Ahn , Seongyeon Kim , Ihyeok Seo

We consider the global attractor of the critical SQG semigroup $S(t)$ on the scale-invariant space $H^1(\mathbb{T}^2)$. It was shown in~\cite{CTV13} that this attractor is finite dimensional, and that it attracts uniformly bounded sets in…

Analysis of PDEs · Mathematics 2016-02-17 Peter Constantin , Michele Coti Zelati , Vlad Vicol

The global attraction is established for all finite energy solutions to a model $\mathbf{U}(1)$-invariant nonlinear Klein-Gordon equation in one dimension coupled to a finite number of nonlinear oscillators: We prove that {\it each finite…

Analysis of PDEs · Mathematics 2007-11-10 Alexander Komech , Andrew Komech

The well-posedness of a generalized Coleman--Gurtin equation equipped with dynamic boundary conditions with memory was recently established by the author with C.G. Gal. In this article we report advances concerning the asymptotic behavior…

Analysis of PDEs · Mathematics 2016-02-04 Joseph L. Shomberg